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Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate) Disease Interactions

There are 26 disease interactions with Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate):

Major

Antihistamines (Includes Scot-Tussin Original (old formulation)) ↔ Anticholinergic Effects

Severe Potential Hazard, Moderate plausibility

Applies to: Gastrointestinal Obstruction, Glaucoma/Intraocular Hypertension, Urinary Retention

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

References

  1. "Product Information. Tavist (clemastine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  2. "Product Information. Optimine (azatadine)." Schering Laboratories, Kenilworth, NJ.
  3. "Product Information. Periactin (cyproheptadine)." Merck & Co, Inc, West Point, PA.
  4. "Product Information. Temaril (trimeprazine)" Allergan Inc, Irvine, CA.
  5. "Product Information. Drixoral (dextromethorphan)." Schering-Plough, Liberty Corner, NJ.
  6. "Product Information. Benadryl (diphenhydramine)." Parke-Davis, Morris Plains, NJ.
  7. "Product Information. Marezine (cyclizine)." Glaxo Wellcome, Research Triangle Park, NC.
  8. "Product Information. Zyrtec (cetirizine)." Pfizer US Pharmaceuticals, New York, NY.
  9. "Product Information. Dramamine (dimenhydrinate)" Pharmacia and Upjohn, Kalamazoo, MI.
  10. Schuller DE, Turkewitz D "Adverse effects of antihistamines." Postgrad Med 79 (1986): 75-86
  11. "Product Information. Poly-Histine-D (pyrilamine)." Bock Pharmaceutical Company, St. Louis, MO.
  12. "Product Information. Vistaril (hydroxyzine)." Pfizer US Pharmaceuticals, New York, NY.
  13. DiPiro JT, Talbert RL, Yee GC, Matzke GR, Wells BG, Posey LM "Pharmacotherapy: A Pathophysiologic Approach 4th" Stamford, CT: Appleton & Lange (1999):
  14. "Product Information. Dimetane (brompheniramine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
  15. "Product Information. Chlortrimeton (chlorpheniramine)." Schering-Plough, Liberty Corner, NJ.
  16. "Product Information. Tacaryl (methdilazine)." Westwood Squibb Pharmaceutical Corporation, Buffalo, NY.
  17. "Product Information. Antivert (meclizine)." Roerig Division, New York, NY.
  18. "Product Information. Semprex-D (acrivastine-pseudoephedrine)." Endo Laboratories LLC, Chadds Ford, PA.
  19. Watemberg NM, Roth KS, Alehan FK, Epstein CE "Central anticholinergic syndrome on therapeutic doses of cyproheptadine." Pediatrics 103 (1999): 158-60
  20. "Product Information. Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 20 references
Major

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Cardiac Disease

Severe Potential Hazard, Moderate plausibility

Applies to: Hypertension, Hyperthyroidism, Heart Disease, Pheochromocytoma, Peripheral Arterial Disease

The use of CNS stimulants is contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in adults and children taking CNS stimulant treatment. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

References

  1. "Product Information. Dopram (doxapram)." West-Ward Pharmaceutical Corporation, Eatontown, NJ.
Major

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Hypertension

Severe Potential Hazard, Moderate plausibility

Applies to: Hypertension

CNS stimulant medications have shown to increase blood pressure and their use is contraindicated in patients with severe hypertension. Caution should be used when administering to patients with preexisting high blood pressure and other cardiovascular conditions. All patients under treatment should be regularly monitored for changes in blood pressure and heart rate.

References

  1. "Product Information. Dopram (doxapram)." West-Ward Pharmaceutical Corporation, Eatontown, NJ.
Major

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Liver Disease

Severe Potential Hazard, Moderate plausibility

Applies to: Liver Disease

In general, CNS stimulants are extensively metabolized by the liver. Their plasma clearance may be decreased and their half-life prolonged in patients with impaired hepatic function. Therapy with CNS stimulants should be administered cautiously in patients with moderate to severe liver disease, and the dosage should be adjusted accordingly. Additionally, postmarketing reports have shown that atomoxetine can cause severe liver injury. Laboratory testing should be done at the first sign or symptom of liver dysfunction (jaundice, dark urine, upper quadrant tenderness) and treatment should be discontinued in patients with evidence of liver injury.

References

  1. "Product Information. Provigil (modafinil)." Cephalon, Inc, West Chester, PA.
Major

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Seizure Disorders

Severe Potential Hazard, Moderate plausibility

Applies to: Seizures

Due to general central nervous system stimulation, therapy with CNS stimulant drugs may cause seizures. These drugs may lower the convulsive threshold in patients with prior history of seizures or EEG abnormalities, and very rarely in patients with no previous history of seizures. Therapy with CNS stimulants should be used with caution in patients with or predisposed to seizures. If seizures appear, therapy should be discontinued.

References

  1. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
Major

Methylxanthines (Includes Scot-Tussin Original (old formulation)) ↔ Pud

Severe Potential Hazard, High plausibility

Applies to: Peptic Ulcer

Methylxanthines are known to stimulate peptic acid secretion. Therapy with products containing methylxanthines should be administered with extreme caution in patients with active peptic ulcer disease. Some manufacturers consider their use to be contraindicated under such circumstance.

References

  1. "Product Information. Theo-Dur (theophylline)." Schering Laboratories, Kenilworth, NJ.
  2. Alterman P, Spiegel D, Feldman J, Yaretzky A "Histamine h2-receptor antagonists and chronic theophylline toxicity." Am Fam Physician 54 (1996): 1473
  3. Stoller JL "Oesophageal ulceration and theophylline." Lancet 2 (1985): 328-9
  4. "Product Information. Lufyllin (dyphylline)" Wallace Laboratories, Cranbury, NJ.
View all 4 references
Major

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Gi Toxicity

Severe Potential Hazard, High plausibility

Applies to: Peptic Ulcer, Duodenitis/Gastritis, Gastrointestinal Hemorrhage, Gastrointestinal Perforation, History - Peptic Ulcer, Alcoholism, Colitis/Enteritis (Noninfectious), Colonic Ulceration

Salicylates, particularly aspirin, can cause dose-related gastrointestinal bleeding and mucosal damage, which may occur independently of each other. Occult, often asymptomatic GI blood loss is quite common with usual dosages of aspirin and stems from the drug's local effect on the GI mucosa. During chronic therapy, this type of bleeding may occasionally produce iron deficiency anemia. In contrast, major upper GI bleeding rarely occurs except in patients with active peptic ulcers or recent GI bleeding. However, these patients generally do not experience greater occult blood loss than healthy patients following small doses of aspirin. Mucosal damage associated with the use of salicylates may lead to development of peptic ulcers with or without bleeding, reactivation of latent ulcers, and ulcer perforation. Therapy with salicylates and related agents such as salicylamide should be considered and administered cautiously in patients with a history of GI disease or alcoholism, particularly if they are elderly and/or debilitated, since such patients may be more susceptible to the GI toxicity of these drugs and seem to tolerate ulceration and bleeding less well than other individuals. Extreme caution and thorough assessment of risks and benefits are warranted in patients with active or recent GI bleeding or lesions. Whenever possible, especially if prolonged use is anticipated, treatment with non-ulcerogenic agents should be attempted first. If salicylates are used, close monitoring for toxicity is recommended. Some adverse GI effects may be minimized by administration with high dosages of antacids, use of enteric-coated or extended-release formulations, and/or concurrent use of a histamine H2-receptor antagonist or a cytoprotective agent such as misoprostol. Patients with active peptic ulceration or GI bleeding treated with salicylates should generally be administered a concomitant anti-ulcer regimen.

References

  1. Lanas A, Serrano P, Bajador E, Esteva F, Benito R, Sainz R "Evidence of aspirin use in both upper and lower gastrointestinal perforation." Gastroenterology 112 (1997): 683-9
  2. Savon JJ, Allen ML, Dimarino AJ, Hermann GA, Krum RP "Gastrointestinal blood loss with low dose (325 mg) plain and enteric-coated aspirin administration." Am J Gastroenterol 90 (1995): 581-5
  3. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  4. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  5. Roderick PJ, Wilkes HC, Meade TW "The gastrointestinal toxicity of aspirin: an overview of randomised controlled trials." Br J Clin Pharmacol 35 (1993): 219-26
  6. Mehta S, Dasarathy S, Tandon RK, Mathur M, Malaviya AN "A prospective randomized study of the injurious effects of aspirin and naproxen on the gastroduodenal mucosa in patients with rheumatoid arthritis." Am J Gastroenterol 87 (1992): 996-1000
  7. Bergmann JF, Chassany O, Geneve J, Abiteboul M, Caulin C, Segrestaa JM "Endoscopic evaluation of the effect of ketoprofen, ibuprofen and aspirin on the gastroduodenal mucosa." Eur J Clin Pharmacol 42 (1992): 685-8
  8. Marks RD "Aspirin use and fecal occult blood testing." Am J Med 100 (1996): 596-7
  9. Naschitz JE, Yeshurun D, Odeh M, Bassan H, Rosner I, Stermer E, Levy N "Overt gastrointestinal bleeding in the course of chronic low-dose aspirin administration for secondary prevention of arterial occlusive disease." Am J Gastroenterol 85 (1990): 408-11
  10. Weil J, Colinjones D, Langman M, Lawson D, Logan R, Murphy M, Rawlins M, Vessey M, Wainwright P "Prophylactic aspirin and risk of peptic ulcer bleeding." BMJ 310 (1995): 827-30
  11. Graham DY, Smith JL "Aspirin and the stomach." Ann Intern Med 104 (1986): 390-8
  12. Prichard PJ, Kitchingman GK, Walt RP, Daneshmend TK, Hawkey CJ "Human gastric mucosal bleeding induced by low dose aspirin, but not warfarin." BMJ 298 (1989): 493-6
  13. Sabesin SM, Boyce HW Jr, King CE, Mann JA, Ruoff G, Wall E "Comparative evaluation of gastrointestinal intolerance produced by plain and tri-buffered aspirin tablets." Am J Gastroenterol 83 (1988): 1220-5
  14. Levy M, Miller DR, Kaufman DW, Siskind V, Schwingl P, Rosenberg L, Strom B, Shapiro S "Major upper gastrointestinal tract bleeding. Relation to the use of aspirin and other nonnarcotic analgesics." Arch Intern Med 148 (1988): 281-5
  15. Stalnikowiczdarvasi R "Gastrointestinal bleeding during low-dose aspirin administration for prevention of arterial occlusive events: a critical analysis." J Clin Gastroenterol 21 (1995): 13-6
  16. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  17. Wilcox CM, Shalek KA, Cotsonis G "Striking prevalence of over-the-counter nonsteroidal anti- inflammatory drug use in patients with upper gastrointestinal hemorrhage." Arch Intern Med 154 (1994): 42-6
  18. Silagy CA, McNeil JJ, Donnan GA, Tonkin AM, Worsam B, Campion K "Adverse effects of low-dose aspirin in a healthy elderly population." Clin Pharmacol Ther 54 (1993): 84-9
  19. Greenberg PD, Cello JP, Rockey DC "Asymptomatic chronic gastrointestinal blood loss in patients taking aspirin or warfarin for cardiovascular disease." Am J Med 100 (1996): 598-604
View all 19 references
Major

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Renal Dysfunction

Severe Potential Hazard, High plausibility

Applies to: Renal Dysfunction

Salicylate and its metabolites are eliminated almost entirely by the kidney. Therapy with salicylate drugs should be administered cautiously in patients with renal impairment, especially if it is severe. Reduced dosages may be necessary to avoid drug accumulation. Clinical monitoring of renal function is recommended during prolonged therapy, since the use of salicylate drugs has rarely been associated with renal toxicities, including elevations in serum creatinine, renal papillary necrosis, and acute tubular necrosis with renal failure. Most of the data have been derived from experience with aspirin but may apply to other salicylates as well. In patients with impaired renal function, aspirin has caused reversible and sometimes marked decreases in renal blood flow and glomerular filtration rate. Adverse renal effects have usually reversed rapidly following withdrawal of aspirin therapy.

References

  1. "Product Information. Rexolate (sodium thiosalicylate)" Hyrex Pharmaceuticals, Memphis, TN.
  2. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  3. Carmichael J, Shankel SW "Effects of nonsteroidal anti-inflammatory drugs on prostaglandins and renal function." Am J Med 78 (1985): 992-1000
  4. Riegger GA, Kahles HW, Elsner D, Kromer EP, Kochsiek K "Effects of acetylsalicylic acid on renal function in patients with chronic heart failure." Am J Med 90 (1991): 571-5
  5. Whelton A "Renal effects of over-the-counter analgesics." J Clin Pharmacol 35 (1995): 454-63
  6. Kimberly RP, Plotz PH "Aspirin-induced depression of renal function." N Engl J Med 296 (1977): 418-24
  7. Wen SF, Parthasarathy R, Iliopoulos O, Oberley TD "Acute renal failure following binge drinking and nonsteroidal antiinflammatory drugs." Am J Kidney Dis 20 (1992): 281-5
  8. Muther RS, Potter DM, Bennett WM "Aspirin-induced depression of glomerular filtration rate in normal humans: role of sodium balance." Ann Intern Med 94 (1981): 317-21
  9. Maher JF "Analgesic nephropathy. Observations, interpretations, and perspective on the low incidence in America." Am J Med 76 (1984): 345-8
  10. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  11. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
View all 11 references
Major

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Reye's Syndrome

Severe Potential Hazard, High plausibility

Applies to: Varicella-Zoster, Influenza

The use of salicylates, primarily aspirin, in children with varicella infections or influenza-like illnesses has been associated with an increased risk of Reye's syndrome. Although a causal relationship has not been established, the majority of evidence to date seems to support the association. Most authorities, including the American Academy of Pediatrics Committee on Infectious Diseases, recommend avoiding the use of salicylates in children and teenagers with known or suspected varicella or influenza and during presumed outbreaks of influenza. If antipyretic or analgesic therapy is indicated under these circumstances, acetaminophen may be an appropriate alternative. The same precautions should also be observed with related agents such as salicylamide or diflunisal because of their structural and pharmacological similarities to salicylate.

References

  1. Belay ED, Bresee JS, Holman RC, Khan AS, Shahriari A, Schonberger LB "Reye's syndrome in the United States from 1981 through 1997." N Engl J Med 340 (1999): 1377-82
  2. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  3. "Product Information. Rexolate (sodium thiosalicylate)" Hyrex Pharmaceuticals, Memphis, TN.
  4. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  5. American Academy of Pediatrics. Committee on Infectious Diseases; Peter G, ed. "Red BooK: Report of the Committee on Infectious Diseases. 24th" Grove Village, IL: American Academy of Pediatrics (1997):
  6. Hasking GJ, Duggan JM "Encephalopathy from bismuth subsalicylate." Med J Aust 2 (1982): 167
  7. Behrman R, Kliegman R, Arvin A, Nelson W, eds. "Nelson Textbook of Pediatrics. 15th ed." Philadelphia, PA: W.B. Saunders Company (1996):
  8. Epidemiology Office, Divisiion of Viral and Rickettsial Diseasses, Center for Infectious Diseases, Centers for Disease Control. "Leads from the MMWR. Reye syndrome surveillance--United States, 1987 and 1988." JAMA 261 (1989): 3520,
  9. "Product Information. Pepto-Bismol (bismuth subsalicylate)." Procter and Gamble Pharmaceuticals, Cincinnati, OH.
View all 9 references
Major

Sympathomimetics (Includes Scot-Tussin Original (old formulation)) ↔ Cardiovascular Disease

Severe Potential Hazard, High plausibility

Applies to: Cardiovascular Disease, Cerebrovascular Insufficiency, Hyperthyroidism, Pheochromocytoma

Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.

References

  1. Covington TR, Lawson LC, Young LL, eds. "Handbook of Nonprescription Drugs. 10th ed." Washington, DC: American Pharmaceutical Association (1993):
  2. Horowitz JD, Lang WJ, Howes LG, Fennessy MR, Christophidis N, Rand MJ, Louis WJ "Hypertensive responses induced by phenylpropanolamine in anorectic and decongestant preparations." Lancet 1 (1980): 60-1
  3. Frewin DB "Phenylpropanolamine. How safe is it?" Med J Aust 2 (1983): 54-5
  4. Leo PJ, Hollander JE, Shih RD, Marcus SM "Phenylpropanolamine and associated myocardial injury." Ann Emerg Med 28 (1996): 359-62
  5. Gordon RD, Ballantine DM, Bachmann AW "Effects of repeated doses of pseudoephedrine on blood pressure and plasma catecholamines in normal subjects and in patients with phaeochromocytoma." Clin Exp Pharmacol Physiol 19 (1992): 287-90
  6. Shapiro SR "Hypertension due to anorectic agent." N Engl J Med 280 (1969): 1363
  7. Mansoor GA "Herbs and alternative therapies in the hypertension clinic." Am J Hypertens 14(9 Pt 1) (2001): 971-5
  8. Elliott CF, Whyte JC "Phenylpropanolamine and hypertension." Med J Aust 1 (1981): 715
  9. Loizou LA, Hamilton JG, Tsementzis SA "Intracranial haemorrhage in association with pseudoephedrine overdose." J Neurol Neurosurg Psychiatry 45 (1982): 471-2
  10. Edwards M, Russo L, Harwood-Nuss A "Cerebral infarction with a single oral dose of phenylpropanolamine." Am J Emerg Med 5 (1987): 163-4
  11. Fallis RJ, Fisher M "Cerebral vasculitis and hemorrhage associated with phenylpropanolamine." Neurology 35 (1985): 405-7
  12. Lake CR, Zaloga G, Clymer R, Quirk RM, Chernow B "A double dose of phenylpropanolamine causes transient hypertension." Am J Med 85 (1988): 339-43
  13. Lee KY, Beilin LJ, Vandongen R "Severe hypertension after ingestion of an appetite suppressant (phenylpropanolamine) with indomethacin." Lancet 1 (1979): 1110-1
  14. Dickerson J, Perrier D, Mayersohn M, Bressler R "Dose tolerance and pharmacokinetic studies of L (+) pseudoephedrine capsules in man." Eur J Clin Pharmacol 14 (1978): 253-9
  15. Bernstein E, Diskant BM "Phenylpropanolamine: a potentially hazardous drug." Ann Emerg Med 11 (1982): 311-5
  16. Johnson DA, Etter HS, Reeves DM "Stroke and phenylpropanolamine use" Lancet 2 (1983): 970
  17. Lee KY, Beilin LJ, Vandongen R "Severe hypertension after administration of phenylpropanolamine" Med J Aust 1 (1979): 525-6
  18. O'Connell MB, Gross CR "The effect of multiple doses of phenylpropanolamine on the blood pressure of patients whose hypertension was controlled with beta blockers." Pharmacotherapy 11 (1991): 376-81
  19. Gill ND, Shield A, Blazevich AJ, Zhou S, Weatherby RP "Muscular and cardiorespiratory effects of pseudoephedrine in human athletes." Br J Clin Pharmacol 50 (2000): 205-13
  20. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  21. Frewin DB, Leonello PP, Frewin ME "Hypertension after ingestion of Trimolets." Med J Aust 2 (1978): 497-8
  22. Teh AY "Phenylpropanolamine and hypertension" Med J Aust 2 (1979): 425-6
  23. Pentel PR, Aaron C, Paya C "Therapeutic doses of phenylpropanolamine increase supine systolic blood pressure." Int J Obes 9 (1985): 115-9
  24. Kroenke K, Omori DM, Simmons JO, Wood DR, Meier NJ "The safety of phenylpropanolamine in patients with stable hypertension." Ann Intern Med 111 (1989): 1043-4
  25. Kase CS, Foster TE, Reed JE, Spatz EL, Girgis GN "Intracerebral hemorrhage and phenylpropanolamine use." Neurology 37 (1987): 399-404
  26. Noble R "A controlled clinical trial of the cardiovascular and psychological effects of phenylpropanolamine and caffeine." Drug Intell Clin Pharm 22 (1988): 296-9
  27. Samenuk D, Link MS, Homoud MK, et al. "Adverse cardiovascular events temporally associated with ma huang, an herbal source of ephedrine." Mayo Clin Proc 77 (2002): 12-6
  28. Rosen RA "Angina associated with pseudoephedrine ." Ann Emerg Med 10 (1981): 230-1
  29. Lake CR, Gallant S, Masson E, Miller P "Adverse drug effects attributed to phenylpropanolamine: a review of 142 case reports." Am J Med 89 (1990): 195-208
  30. Kikta DG, Devereaux MW, Chandar K "Intracranial hemorrhages due to phenylpropanolamine." Stroke 16 (1985): 510-2
  31. Humberstone PM "Hypertension from cold remedies." Br Med J 1 (1969): 846
  32. Maher LM, Peterson PL, Dela-Cruz C "Postpartum intracranial hemorrhage and phenylpropanolamine use" Neurology 37 (1987): 1686
  33. Horowitz JD, McNeil JJ, Sweet B, Mendelsohn FA, Louis WJ "Hypertension and postural hypotension induced by phenylpropanolamine (Trimolets)." Med J Aust 1 (1979): 175-6
  34. Haller CA, Benowitz NL "Adverse cardiovascular and central nervous system events associated with dietary supplements containing ephedra alkaloids." N Engl J Med 343 (2000): 1833-8
  35. Dowse R, Scherzinger SS, Kanfer I "Serum concentrations of phenylpropanolamine and associated effects on blood pressure in normotensive subjects: a pilot-study." Int J Clin Pharmacol Ther Toxicol 28 (1990): 205-10
  36. Gibson GJ, Warrell DA "Hypertensive crises and phenylpropanolamine." Lancet 2 (1972): 492-3
  37. Maher LM, Peterson PL, Dela-Cruz C "Postpartum intracranial hemorrhage and phenylpropanolamine use." Neurology 37 (1987): 1886,1890
  38. Caperton E "Raynaud's phenomenon. Role of diet pills and cold remedies." Postgrad Med 73 (1983): 291-2
  39. Finton CK, Barton M, Chernow B "Possible adverse effects of phenylpropanolamine (diet pills) on sympathetic nervous system function--caveat emptor!" Mil Med 147 (1982): 1072
  40. "Product Information. Sudafed (pseudoephedrine)." Glaxo Wellcome, Research Triangle Park, NC.
  41. Lake CR, Zaloga G, Bray J, Rosenberg D, Chernow B "Transient hypertension after two phenylpropanolamine diet aids and the effects of caffeine: a placebo-controlled follow-up study." Am J Med 86 (1989): 427-32
  42. To LB, Sangster JF, Rampling D, Cammens I "Ephedrine-induced cardiomyopathy." Med J Aust 2 (1980): 35-6
  43. Clark JE, Simon WA "Cardiac arrhythmias after phenylpropanolamine ingestion." Drug Intell Clin Pharm 17 (1983): 737-8
  44. Mariani PJ "Pseudoephedrine-induced hypertensive emergency: treatment with labetalol." Am J Emerg Med 4 (1986): 141-2
  45. Pentel PR, Mikell FL, Zavoral JH "Myocardial injury after phenylpropanolamine ingestion." Br Heart J 47 (1982): 51-4
  46. Kizer KW "Intracranial hemorrhage associated with overdose of decongestant containing phenylpropanolamine" Am J Emerg Med 2 (1984): 180-1
  47. Chin C, Choy M "Cardiomyopathy induced by phenylpropanolamine." J Pediatr 123 (1993): 825-7
  48. Wooten MR, Khangure MS, Murphy MJ "Intracerebral hemorrhage and vasculitis related to ephedrine abuse." Ann Neurol 13 (1983): 337-40
  49. McDowell JR, LeBlanc HJ "Phenylpropanolamine and cerebral hemorrhage." West J Med 142 (1985): 688-91
  50. Howrie DL, Wolfson JH "Phenylpropanolamine-induced hypertensive seizures." J Pediatr 102 (1983): 143-5
  51. Bruno A, Nolte KB, Chapin J "Stroke associated with ephedrine use." Neurology 43 (1993): 1313-6
  52. Williams DM "Phenylpropanolamine hydrochloride" Am Pharm NS30 (1990): 47-50
  53. McEwen J "Phenylpropanolamine-associated hypertension after the use of "over- the-counter" appetite-suppressant products." Med J Aust 2 (1983): 71-3
  54. Wiener I, Tilkian AG, Palazzolo M "Coronary artery spasm and myocardial infarction in a patient with normal coronary arteries: temporal relationship to pseudoephedrine ingestion." Cathet Cardiovasc Diagn 20 (1990): 51-3
  55. O'Connell MB, Gross CR "The effect of single-dose phenylpropanolamine on blood pressure in patients with hypertension controlled by beta blockers." Pharmacotherapy 10 (1990): 85-91
  56. Stoessl AJ, Young GB, Feasby TE "Intracerebral haemorrhage and angiographic beading following ingestion of catecholaminergics." Stroke 16 (1985): 734-6
View all 56 references
Moderate

Antihistamines (Includes Scot-Tussin Original (old formulation)) ↔ Asthma/Copd

Moderate Potential Hazard, Moderate plausibility

Applies to: Asthma, Chronic Obstructive Pulmonary Disease

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

References

  1. "Product Information. Temaril (trimeprazine)" Allergan Inc, Irvine, CA.
  2. "Product Information. Tavist (clemastine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  3. "Product Information. Periactin (cyproheptadine)." Merck & Co, Inc, West Point, PA.
  4. "Product Information. Drixoral (dextromethorphan)." Schering-Plough, Liberty Corner, NJ.
  5. "Product Information. Benadryl (diphenhydramine)." Parke-Davis, Morris Plains, NJ.
  6. "Product Information. Marezine (cyclizine)." Glaxo Wellcome, Research Triangle Park, NC.
  7. Maddox DE, Reed CE "Clinical pharmacodynamics of antihistamines." Ann Allergy 59 (1987): 43-8
  8. "Product Information. Semprex-D (acrivastine-pseudoephedrine)." Endo Laboratories LLC, Chadds Ford, PA.
  9. "Product Information. Dramamine (dimenhydrinate)" Pharmacia and Upjohn, Kalamazoo, MI.
  10. "Product Information. Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
  11. "Product Information. Poly-Histine-D (pyrilamine)." Bock Pharmaceutical Company, St. Louis, MO.
  12. "Product Information. Vistaril (hydroxyzine)." Pfizer US Pharmaceuticals, New York, NY.
  13. "Product Information. Antivert (meclizine)." Roerig Division, New York, NY.
  14. "Product Information. Dimetane (brompheniramine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
  15. "Product Information. Tacaryl (methdilazine)." Westwood Squibb Pharmaceutical Corporation, Buffalo, NY.
  16. "Product Information. Chlortrimeton (chlorpheniramine)." Schering-Plough, Liberty Corner, NJ.
  17. "Product Information. Optimine (azatadine)." Schering Laboratories, Kenilworth, NJ.
View all 17 references
Moderate

Antihistamines (Includes Scot-Tussin Original (old formulation)) ↔ Cardiovascular

Moderate Potential Hazard, Moderate plausibility

Applies to: Cardiovascular Disease, Hyperthyroidism, Hypotension

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

References

  1. "Product Information. Dimetane (brompheniramine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
  2. "Product Information. Optimine (azatadine)." Schering Laboratories, Kenilworth, NJ.
  3. "Product Information. Antivert (meclizine)." Roerig Division, New York, NY.
  4. "Product Information. Tavist (clemastine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  5. Smith SJ "Cardiovascular toxicity of antihistamines." Otolaryngol Head Neck Surg 111 Suppl (1994): 348-54
  6. "Product Information. Periactin (cyproheptadine)." Merck & Co, Inc, West Point, PA.
  7. "Product Information. Benadryl (diphenhydramine)." Parke-Davis, Morris Plains, NJ.
  8. "Product Information. Chlortrimeton (chlorpheniramine)." Schering-Plough, Liberty Corner, NJ.
  9. "Product Information. Drixoral (dextromethorphan)." Schering-Plough, Liberty Corner, NJ.
  10. "Product Information. Zyrtec (cetirizine)." Pfizer US Pharmaceuticals, New York, NY.
  11. "Product Information. Dramamine (dimenhydrinate)" Pharmacia and Upjohn, Kalamazoo, MI.
  12. Schuller DE, Turkewitz D "Adverse effects of antihistamines." Postgrad Med 79 (1986): 75-86
  13. "Product Information. Poly-Histine-D (pyrilamine)." Bock Pharmaceutical Company, St. Louis, MO.
  14. Woosley RL "Cardiac actions of antihistamines." Annu Rev Pharmacol Toxicol 36 (1996): 233-52
  15. "Product Information. Vistaril (hydroxyzine)." Pfizer US Pharmaceuticals, New York, NY.
View all 15 references
Moderate

Antihistamines (Includes Scot-Tussin Original (old formulation)) ↔ Renal/Liver Disease

Moderate Potential Hazard, High plausibility

Applies to: Liver Disease, Renal Dysfunction

Limited pharmacokinetic data are available for the older, first-generation antihistamines. Many appear to be primarily metabolized by the liver, and both parent drugs and metabolites are excreted in the urine. Patients with renal and/or liver disease may be at greater risk for adverse effects from antihistamines due to drug and metabolite accumulation. Therapy with antihistamines should be administered cautiously in such patients. Lower initial dosages may be appropriate.

References

  1. Paton DM, Webster DR "Clinical pharmacokinetics of H1-receptor antagonists (the antihistamines)." Clin Pharmacokinet 10 (1985): 477-97
  2. Blyden GT, Greenblatt DJ, Scavone JM, Shader RI "Pharmacokinetics of diphenhydramine and a demethylated metabolite following intravenous and oral administration." J Clin Pharmacol 26 (1986): 529-33
  3. Rumore MM "Clinical pharmacokinetics of chlorpheniramine." Drug Intell Clin Pharm 18 (1984): 701-7
  4. Simons FE, Frith EM, Simons KJ "The pharmacokinetics and antihistaminic effects of brompheniramine." J Allergy Clin Immunol 70 (1982): 458-64
  5. Meredith CG, Christian CD Jr, Johnson RF, Madhavan SV, Schenker S "Diphenhydramine disposition in chronic liver disease." Clin Pharmacol Ther 35 (1984): 474-9
  6. Porter CC, Arison BH, Gruber VF, Titus DC, Vandenheuvel WJ "Human metabolism of cyproheptadine." Drug Metab Dispos 3 (1975): 189-97
  7. Glazko AJ, Dill WA, Young RM, Smith TC, Ogilvie RI "Metabolic disposition of diphenhydramine." Clin Pharmacol Ther 16 (1974): 1066-76
  8. Maddox DE, Reed CE "Clinical pharmacodynamics of antihistamines." Ann Allergy 59 (1987): 43-8
  9. Bruce RB, Turnbull LB, Newman JH, Pitts JE "Metabolism of brompheniramine." J Med Chem 11 (1968): 1031-4
  10. Simons KJ, Simons FE, Luciuk GH, Frith EM "Urinary excretion of chlorpheniramine and its metabolites in children." J Pharm Sci 73 (1984): 595-9
  11. Simons FE, Watson WT, Chen XY, Minuk GY, Simons KJ "The pharmacokinetics and pharmacodynamics of hydroxyzine in patients with primary biliary cirrhosis." J Clin Pharmacol 29 (1989): 809-15
  12. Hintze KL, Wold JS, Fischer LJ "Disposition of cyproheptadine in rats, mice, and humans and identification of a stable epoxide metabolite." Drug Metab Dispos 3 (1975): 1-9
  13. Huang SM, Athanikar NK, Sridhar K, Huang YC, Chiou WL "Pharmacokinetics of chlorpheniramine after intravenous and oral administration in normal adults." Eur J Clin Pharmacol 22 (1982): 359-65
  14. Albert KS, Hallmark MR, Sakmar E, Weidler DJ, Wagner JG "Pharmacokinetics of diphenhydramine in man." J Pharmacokinet Biopharm 3 (1975): 159-70
  15. Simons FE, Simons KJ, Frith EM "The pharmacokinetics and antihistaminic of the H1 receptor antagonist hydroxyzine." J Allergy Clin Immunol 73 (1984): 69-75
View all 15 references
Moderate

Caffeine (Includes Scot-Tussin Original (old formulation)) ↔ Cardiotoxicity

Moderate Potential Hazard, Moderate plausibility

Applies to: Tachyarrhythmia, Myocardial Infarction, Post MI Syndrome, Hypertension, Hyperthyroidism, Angina Pectoris

Like other methylxanthines, caffeine at high dosages may be associated with positive inotropic and chronotropic effects on the heart. Caffeine may also produce an increase in systemic vascular resistance, resulting in elevation of blood pressure. Therapy with products containing caffeine should be administered cautiously in patients with severe cardiac disease, hypertension, hyperthyroidism, or acute myocardial injury. Some clinicians recommend avoiding caffeine in patients with symptomatic cardiac arrhythmias and/or palpitations and during the first several days to weeks after an acute myocardial infarction.

References

  1. "Multum Information Services, Inc. Expert Review Panel"
Moderate

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Psychiatric Disorders

Moderate Potential Hazard, Moderate plausibility

Applies to: Psychosis, Depression

The use of CNS stimulants can cause psychotic or maniac symptoms, suicidal ideation, aggression and can exacerbate symptoms of behavior disturbance and thought disorder. Psychiatric symptoms have been reported in patients with and without history of psychiatric disorders, and all patients should be monitored closely, specially during treatment initiation and at times of dose changes. Extreme caution should be exercised when CNS stimulants are given to patients with a history of psychosis, depression, mania, or bipolar disorder. All patients receiving treatment should be screened for bipolar disease prior to initiation. If any psychiatric symptoms emerge or are exacerbated, treatment suspension should be considered. CNS stimulants are contraindicated in patients with marked agitation or anxiety.

References

  1. "Product Information. Provigil (modafinil)." Cephalon, Inc, West Chester, PA.
Moderate

Cns Stimulants (Includes Scot-Tussin Original (old formulation)) ↔ Renal Dysfunction

Moderate Potential Hazard, Moderate plausibility

Applies to: Renal Dysfunction

Overall CNS stimulants should be administered with caution in patients with significantly impaired renal function as the reduction in the rate of elimination may alter the therapeutic response. The dosage should be adjusted accordingly.

References

  1. "Product Information. Provigil (modafinil)." Cephalon, Inc, West Chester, PA.
Moderate

Methylxanthines (Includes Scot-Tussin Original (old formulation)) ↔ Gerd

Moderate Potential Hazard, High plausibility

Applies to: Gastroesophageal Reflux Disease

Methylxanthines increase gastric acidity and may also relax lower esophageal sphincter, which can lead to gastric reflux into the esophagus. Therapy with products containing methylxanthines should be administered cautiously in patients with significant gastroesophageal reflux.

References

  1. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  2. Alterman P, Spiegel D, Feldman J, Yaretzky A "Histamine h2-receptor antagonists and chronic theophylline toxicity." Am Fam Physician 54 (1996): 1473
  3. Stoller JL "Oesophageal ulceration and theophylline." Lancet 2 (1985): 328-9
  4. "Product Information. Lufyllin (dyphylline)" Wallace Laboratories, Cranbury, NJ.
View all 4 references
Moderate

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Anemia

Moderate Potential Hazard, Moderate plausibility

Applies to: Anemia

Occult, often asymptomatic GI blood loss occurs quite frequently with the use of normal dosages of aspirin and stems from the drug's local effect on the GI mucosa. During chronic therapy, this type of bleeding may occasionally produce iron deficiency anemia. Other salicylates reportedly cause little or no GI blood loss at usual dosages, but may do so at high dosages. Prolonged therapy with salicylates, particularly aspirin, should be administered cautiously in patients with or predisposed to anemia. Periodic monitoring of hematocrit is recommended. The same precautions should also be observed with the use of related agents such as salicylamide because of their structural and pharmacological similarities to salicylate.

References

  1. Naschitz JE, Yeshurun D, Odeh M, Bassan H, Rosner I, Stermer E, Levy N "Overt gastrointestinal bleeding in the course of chronic low-dose aspirin administration for secondary prevention of arterial occlusive disease." Am J Gastroenterol 85 (1990): 408-11
  2. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  3. Savon JJ, Allen ML, Dimarino AJ, Hermann GA, Krum RP "Gastrointestinal blood loss with low dose (325 mg) plain and enteric-coated aspirin administration." Am J Gastroenterol 90 (1995): 581-5
  4. Stalnikowiczdarvasi R "Gastrointestinal bleeding during low-dose aspirin administration for prevention of arterial occlusive events: a critical analysis." J Clin Gastroenterol 21 (1995): 13-6
  5. Marks RD "Aspirin use and fecal occult blood testing." Am J Med 100 (1996): 596-7
  6. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  7. Prichard PJ, Kitchingman GK, Walt RP, Daneshmend TK, Hawkey CJ "Human gastric mucosal bleeding induced by low dose aspirin, but not warfarin." BMJ 298 (1989): 493-6
  8. Greenberg PD, Cello JP, Rockey DC "Asymptomatic chronic gastrointestinal blood loss in patients taking aspirin or warfarin for cardiovascular disease." Am J Med 100 (1996): 598-604
View all 8 references
Moderate

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Coagulation

Moderate Potential Hazard, Moderate plausibility

Applies to: Bleeding, Coagulation Defect, Thrombocytopathy, Thrombocytopenia, Vitamin K Deficiency

All salicylates can interfere with the action of vitamin K and induce a dose-dependent alteration in hepatic synthesis of coagulation factors VII, IX and X. At usual recommended dosages, a slight increase in prothrombin time (PT) may occur. Therapy with salicylates, especially if given in high dosages, should be administered cautiously in patients with significant active bleeding or a hemorrhagic diathesis, including hemostatic and/or coagulation defects associated with hemophilia, vitamin K deficiency, hypoprothombinemia, thrombocytopenia, thrombocytopathy, or severe hepatic impairment. The same precaution should also be observed with the use of related agents such as salicylamide because of their structural and pharmacological similarities to salicylate.

References

  1. Fausa O "Salicylate-induced hypoprothrombinemia: a report of four cases." Acta Med Scand 188 (1970): 403-8
  2. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  3. "Product Information. Pepto-Bismol (bismuth subsalicylate)." Procter and Gamble Pharmaceuticals, Cincinnati, OH.
  4. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  5. Barrow MV, Quick DT, Cunningham RW "Salicylate hypoprothrombinemia in rheumatoid arthritis with liver disease. Report of two cases." Arch Intern Med 120 (1967): 620-4
View all 5 references
Moderate

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Dialysis

Moderate Potential Hazard, High plausibility

Applies to: hemodialysis

Salicylate and its metabolites are readily removed by hemodialysis and, to a lesser extent, by peritoneal dialysis. Doses should either be scheduled for administration after dialysis or supplemental doses be given after dialysis.

References

  1. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  2. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  3. "Product Information. Rexolate (sodium thiosalicylate)" Hyrex Pharmaceuticals, Memphis, TN.
Moderate

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ G-6-Pd Deficiency

Moderate Potential Hazard, Low plausibility

Applies to: G-6-PD Deficiency

Salicylates, particularly aspirin, may cause or aggravate hemolysis in patients with pyruvate kinase or glucose-6-phosphate dehydrogenase (G-6-PD) deficiency. However, this effect has not been clearly established. Until more data are available, therapy with salicylates should be administered cautiously in patients with G-6-PD deficiency. The same precaution should also be observed with the use of related agents such as salicylamide because of their structural and pharmacological similarities to salicylate.

References

  1. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  2. "Product Information. Ecotrin (aspirin)." SmithKline Beecham, Philadelphia, PA.
  3. "Product Information. Rexolate (sodium thiosalicylate)" Hyrex Pharmaceuticals, Memphis, TN.
Moderate

Salicylates (Includes Scot-Tussin Original (old formulation)) ↔ Hepatotoxicity

Moderate Potential Hazard, Moderate plausibility

Applies to: Liver Disease

The use of salicylates has occasionally been associated with acute, reversible hepatotoxicity, primarily manifested as elevations of serum transaminases, alkaline phosphatase and/or, rarely, bilirubin. Hepatic injury consistent with chronic active hepatitis has also been reported in a few patients, which resulted rarely in encephalopathy or death. Salicylate-induced hepatotoxicity appears to be dependent on serum salicylate concentration (> 25 mg/dL) and has occurred most frequently in patients with juvenile arthritis, active systemic lupus erythematosus, rheumatic fever, or preexisting hepatic impairment. Therapy with salicylates, particularly when given in high dosages, should be administered cautiously in these patients, and periodic monitoring of liver function is recommended. The same precautions should also be observed with the use of related agents such as salicylamide because of their structural and pharmacological similarities to salicylate. A dosage reduction may be necessary if liver function abnormalities develop and serum salicylate concentration exceeds 25 mg/dL, although serum transaminase elevations may sometimes be transient and return to pretreatment values despite continued therapy without dosage adjustment.

References

  1. Wolfe JD, Metzger AL, Goldstein RC "Aspirin hepatitis." Ann Intern Med 80 (1974): 74-6
  2. "Product Information. Rexolate (sodium thiosalicylate)" Hyrex Pharmaceuticals, Memphis, TN.
  3. "Product Information. Salflex (salsalate)." Carnrick Laboratories Inc, Cedar Knolls, NJ.
  4. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  5. Sbarbaro JA, Bennett RM "Aspirin hepatotoxicity and disseminated intravascular coagulation." Ann Intern Med 86 (1977): 183-5
  6. Patel DK, Hesse A, Ogunbona A, Notarianni LJ, Bennett PN "Metabolism of aspirin after therapeutic and toxic doses." Hum Exp Toxicol 9 (1990): 131-6
  7. Jorup-Ronstrom C, Beermann B, Wahlin-Boll E, Melander A, Britton S "Reduction of paracetamol and aspirin metabolism during viral hepatitis." Clin Pharmacokinet 11 (1986): 250-6
  8. Seaman WE, Ishak KG, Plotz PH "Aspirin-induced hepatotoxicity in patients with systemic lupus erythematosus." Ann Intern Med 80 (1974): 1-8
View all 8 references
Moderate

Sodium Salicylate (Includes Scot-Tussin Original (old formulation)) ↔ Sodium

Moderate Potential Hazard, High plausibility

Applies to: Congestive Heart Failure, Fluid Retention, Hypertension, Hypernatremia

Each gram of sodium salicylate contains approximately 144 mg (6.25 mEq) of sodium. The sodium content should be considered in patients with conditions that may require sodium restriction, such as congestive heart failure, hypertension, and fluid retention.

References

  1. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
Moderate

Sympathomimetics (Includes Scot-Tussin Original (old formulation)) ↔ Bph

Moderate Potential Hazard, High plausibility

Applies to: Benign Prostatic Hyperplasia, Prostate Tumor

Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.

References

  1. "Product Information. Sudafed (pseudoephedrine)." Glaxo Wellcome, Research Triangle Park, NC.
  2. Covington TR, Lawson LC, Young LL, eds. "Handbook of Nonprescription Drugs. 10th ed." Washington, DC: American Pharmaceutical Association (1993):
  3. Williams DM "Phenylpropanolamine hydrochloride" Am Pharm NS30 (1990): 47-50
Moderate

Sympathomimetics (Includes Scot-Tussin Original (old formulation)) ↔ Diabetes

Moderate Potential Hazard, Moderate plausibility

Applies to: Diabetes Mellitus

Sympathomimetic agents may cause increases in blood glucose concentrations. These effects are usually transient and slight but may be significant with dosages higher than those normally recommended. Therapy with sympathomimetic agents should be administered cautiously in patients with diabetes mellitus. Closer monitoring of blood glucose concentrations may be appropriate.

References

  1. "Product Information. Sudafed (pseudoephedrine)." Glaxo Wellcome, Research Triangle Park, NC.
  2. American Medical Association, Division of Drugs and Toxicology "Drug evaluations annual 1994." Chicago, IL: American Medical Association; (1994):
  3. Covington TR, Lawson LC, Young LL, eds. "Handbook of Nonprescription Drugs. 10th ed." Washington, DC: American Pharmaceutical Association (1993):
  4. Williams DM "Phenylpropanolamine hydrochloride" Am Pharm NS30 (1990): 47-50
View all 4 references
Moderate

Sympathomimetics (Includes Scot-Tussin Original (old formulation)) ↔ Glaucoma

Moderate Potential Hazard, Moderate plausibility

Applies to: Glaucoma/Intraocular Hypertension

Sympathomimetic agents can induce transient mydriasis via stimulation of alpha-1 adrenergic receptors. In patients with anatomically narrow angles or narrow-angle glaucoma, pupillary dilation can provoke an acute attack. In patients with other forms of glaucoma, mydriasis may occasionally increase intraocular pressure. Therapy with sympathomimetic agents should be administered cautiously in patients with or predisposed to glaucoma, particularly narrow-angle glaucoma.

References

  1. Covington TR, Lawson LC, Young LL, eds. "Handbook of Nonprescription Drugs. 10th ed." Washington, DC: American Pharmaceutical Association (1993):
  2. Fraunfelder FT, Fraunfelder FW; Randall JA "Drug-Induced Ocular Side Effects 5th" Boston, MA: Butterworth-Heinemann (2001):
  3. "Product Information. Sudafed (pseudoephedrine)." Glaxo Wellcome, Research Triangle Park, NC.

Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate) drug Interactions

There are 1231 drug interactions with Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate)

Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate) alcohol/food Interactions

There are 7 alcohol/food interactions with Scot-Tussin Original (old formulation) (caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

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