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Drug Interactions between Neptazane and Saleto

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Major

aspirin methazolAMIDE

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide) and Neptazane (methazolamide)

GENERALLY AVOID: The combination of large doses of salicylates and oral carbonic anhydrase inhibitors (CAI) may rarely result in severe metabolic acidosis and/or salicylate toxicity. The mechanism is unknown but may involve salicylate-induced displacement of CAIs from plasma protein-binding sites and reduced renal clearance, or CAI-induced plasma pH changes resulting in increased amounts of unionised salicylates entering the CNS. Coma and death have been reported. Although this has not been reported with ocular CAIs, the clinician should consider the possibility of an interaction with these agents, also.

MANAGEMENT: In general, concomitant use of antirheumatic doses of salicylates and oral CAIs is not recommended. If coadministration is necessary, careful monitoring of the patient's mental status and acid base balance is strongly recommended. Patients should be advised to promptly notify their physicians if they experience symptoms such as lethargy, tinnitus, confusion, nausea, vomiting, or hyperventilation.

References

  1. Sweeney KR, Chapron DJ, Kramer PA (1988) "Effect of salicylate on serum protein binding and red blood cell uptake of acetazolamide in vitro." J Pharm Sci, 77, p. 751-6
  2. Favre L, Vallotton MB (1984) "Relationship of renal prostaglandins to three diuretics." Prostaglandins Leukot Med, 14, p. 313-9
  3. Cowan RA, Hartnell GG, Lowdell CP, Baird IM, Leak AM (1984) "Metabolic acidosis induced by carbonic anhydrase inhibitors and salicylates in patients with normal renal function." Br Med J (Clin Res Ed), 289, p. 347-8
  4. Sweeney KR, Chapron DJ, Brandt JL, Gomolin IH, Feig PU, Kramer PA (1986) "Toxic interaction between acetazolamide and salicylate: case reports and a pharmacokinetic explanation." Clin Pharmacol Ther, 40, p. 518-24
  5. Anderson CJ, Kaufman PL, Sturm RJ (1978) "Toxicity of combined therapy with carbonic anhydrase inhibitors and aspirin." Am J Ophthalmol, 86, p. 516-9
  6. Sweeney KR, Chapron DJ, Antal EJ, Kramer PA (1989) "Differential effects of flurbiprofen and aspirin on acetazolamide disposition in humans." Br J Clin Pharmacol, 27, p. 866-9
  7. Rousseau P, Fuentevilla-Clifton A (1993) "Acetazolamide and salicylate interaction in the elderly: a case report." J Am Geriatr Soc, 41, p. 868-9
  8. (2001) "Product Information. Diamox (acetazolamide)." Lederle Laboratories
  9. (2001) "Product Information. Azopt (brinzolamide ophthalmic)." Alcon Laboratories Inc
  10. (2001) "Product Information. Trusopt (dorzolamide ophthalmic)." Merck & Co., Inc
  11. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  12. Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
  13. Cerner Multum, Inc. "Australian Product Information."
View all 13 references

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Moderate

aspirin salicylamide

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide) and Saleto (acetaminophen / aspirin / caffeine / salicylamide)

MONITOR: The combined use of low-dose or high-dose aspirin with other nonsteroidal anti-inflammatory drugs (NSAIDs) may increase the potential for serious gastrointestinal (GI) toxicity, including inflammation, bleeding, ulceration, and perforation. Aspirin at anti-inflammatory dosages or higher may also decrease the plasma concentrations of many NSAIDs. The decreases have ranged from none or small (piroxicam, meloxicam, naproxen, tolmetin) to substantial (flurbiprofen, ibuprofen). However, the therapeutic response does not appear to be affected. Investigators theorize that aspirin may displace NSAIDs from plasma protein binding sites, resulting in increased concentration of unbound, or free, drug available for clearance. The increase in NSAID free fraction, and possibly some contributory anti-inflammatory effect from aspirin, may account for the lack of overall effect on therapeutic response.

MANAGEMENT: Caution is advised if aspirin, particularly at anti-inflammatory dosages, is used with other NSAIDs. Concomitant administration of NSAIDs is considered contraindicated or not recommended with aspirin at analgesic/anti-inflammatory dosages by many NSAID manufacturers. During concomitant therapy, patients should be advised to take the medications with food and to immediately report signs and symptoms of GI ulceration and bleeding such as abdominal pain, bloating, sudden dizziness or lightheadedness, nausea, vomiting, hematemesis, anorexia, and melena.

References

  1. Furst DE, Sarkissian E, Blocka K, et al. (1987) "Serum concentrations of salicylate and naproxen during concurrent therapy in patients with rheumatoid arthritis." Arthritis Rheum, 30, p. 1157-61
  2. Abdel-Rahman MS, Reddi AS, Curro FA, Turkall RM, Kadry AM, Hansrote JA (1991) "Bioavailability of aspirin and salicylamide following oral co-administration in human volunteers." Can J Physiol Pharmacol, 69, p. 1436-42
  3. Gruber CM (1976) "Clinical pharmacology of fenoprofen: a review." J Rheumatol, 2, p. 8-17
  4. Cressman WA, Wortham GF, Plostnieks J (1976) "Absorption and excretion of tolemetin in man." Clin Pharmacol Ther, 19, p. 224-33
  5. Kwan KC, Breault GO, Davis RL, et al. (1978) "Effects of concomitant aspirin administration on the pharmacokinetics of indomethacin in man." J Pharmacokinet Biopharm, 6, p. 451-76
  6. Rubin A, Rodda BE, Warrick P, Gruber CM Jr, Ridolfo RS (1973) "Interactions of aspirin with nonsteroidal antiinflammatory drugs in man." Arthritis Rheum, 16, p. 635-45
  7. Brooks PM, Walker JJ, Bell MA, Buchanan WW, Rhymer AR (1975) "Indomethacin--aspirin interaction: a clinical appraisal." Br Med J, 3, p. 69-11
  8. Tempero KF, Cirillo VJ, Steelman SL (1977) "Diflunisal: a review of pharmacokinetic and pharmacodynamic properties, drug interactions, and special tolerability studies in humans." Br J Clin Pharmacol, 4, s31-6
  9. Willis JV, Kendall MJ, Jack DB (1980) "A study of the effect of aspirin on the pharmacokinetics of oral and intravenous diclofenac sodium." Eur J Clin Pharmacol, 18, p. 415-8
  10. Muller FO, Hundt HK, Muller DG (1977) "Pharmacokinetic and pharmacodynamic implications of long-term administration of non-steroidal anti-inflammatory agents." Int J Clin Pharmacol Biopharm, 15, p. 397-402
  11. Hobbs DC, Twomey TM (1979) "Piroxicam pharmacokinetics in man: aspirin and antacid interaction studies." J Clin Pharmacol, 19, p. 270-81
  12. Pawlotsky Y, Chales G, Grosbois B, Miane B, Bourel M (1978) "Comparative interaction of aspirin with indomethacin and sulindac in chronic rheumatic diseases." Eur J Rheumatol Inflamm, 1, p. 18-20
  13. Segre EJ, Chaplin M, Forchielli E, Runkel R, Sevelius H (1973) "Naproxen-aspirin interactions in man." Clin Pharmacol Ther, 15, p. 374-9
  14. Bird HA, Hill J, Leatham P, Wright V (1986) "A study to determine the clinical relevance of the pharmacokinetic interaction between aspirin and diclofenac." Agents Actions, 18, p. 447-9
  15. Brooks PM, Khong T (1977) "Flurbiprofen-aspirin interaction: a double-blind crossover study." Curr Med Res Opin, 5, p. 53-7
  16. Grennan DM, Ferry DG, Ashworth ME, Kenny RE, Mackinnnon M (1979) "The aspirin-ibuprofen interaction in rheumatoid arthritis." Br J Clin Pharmacol, 8, p. 497-503
  17. Williams RL, Upton RA, Buskin JN, Jones RM (1981) "Ketoprofen-aspirin interactions." Clin Pharmacol Ther, 30, p. 226-31
  18. Kaiser DG, Brooks CD, Lomen PL (1986) "Pharmacokinetics of flurbiprofen." Am J Med, 80, p. 10-5
  19. Kahn SB, Hubsher JA (1983) "Effects of oxaprozin alone or in combination with aspirin on hemostasis and plasma protein binding." J Clin Pharmacol, 23, p. 139-46
  20. (2001) "Product Information. Mobic (meloxicam)." Boehringer-Ingelheim
  21. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  22. Cerner Multum, Inc. "Australian Product Information."
View all 22 references

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Minor

aspirin caffeine

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide) and Saleto (acetaminophen / aspirin / caffeine / salicylamide)

One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster.

References

  1. Yoovathaworn KC, Sriwatanakul K, Thithapandha A (1986) "Influence of caffeine on aspirin pharmacokinetics." Eur J Drug Metab Pharmacokinet, 11, p. 71-6

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Drug and food interactions

Major

acetaminophen food

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide)

GENERALLY AVOID: Chronic, excessive consumption of alcohol may increase the risk of acetaminophen-induced hepatotoxicity, which has included rare cases of fatal hepatitis and frank hepatic failure requiring liver transplantation. The proposed mechanism is induction of hepatic microsomal enzymes during chronic alcohol use, which may result in accelerated metabolism of acetaminophen and increased production of potentially hepatotoxic metabolites.

MANAGEMENT: In general, chronic alcoholics should avoid regular or excessive use of acetaminophen. Alternative analgesic/antipyretic therapy may be appropriate in patients who consume three or more alcoholic drinks per day. However, if acetaminophen is used, these patients should be cautioned not to exceed the recommended dosage (maximum 4 g/day in adults and children 12 years of age or older).

References

  1. Kaysen GA, Pond SM, Roper MH, Menke DJ, Marrama MA (1985) "Combined hepatic and renal injury in alcoholics during therapeutic use of acetaminophen." Arch Intern Med, 145, p. 2019-23
  2. O'Dell JR, Zetterman RK, Burnett DA (1986) "Centrilobular hepatic fibrosis following acetaminophen-induced hepatic necrosis in an alcoholic." JAMA, 255, p. 2636-7
  3. Seeff LB, Cuccherini BA, Zimmerman HJ, Adler E, Benjamin SB (1986) "Acetaminophen hepatotoxicity in alcoholics." Ann Intern Med, 104, p. 399-404
  4. Thummel KE, Slattery JT, Nelson SD (1988) "Mechanism by which ethanol diminishes the hepatotoxicity of acetaminophen." J Pharmacol Exp Ther, 245, p. 129-36
  5. McClain CJ, Kromhout JP, Peterson FJ, Holtzman JL (1980) "Potentiation of acetaminophen hepatotoxicity by alcohol." JAMA, 244, p. 251-3
  6. Kartsonis A, Reddy KR, Schiff ER (1986) "Alcohol, acetaminophen, and hepatic necrosis." Ann Intern Med, 105, p. 138-9
  7. Prescott LF, Critchley JA (1983) "Drug interactions affecting analgesic toxicity." Am J Med, 75, p. 113-6
  8. (2002) "Product Information. Tylenol (acetaminophen)." McNeil Pharmaceutical
  9. Whitcomb DC, Block GD (1994) "Association of acetaminopphen hepatotoxicity with fasting and ethanol use." JAMA, 272, p. 1845-50
  10. Bonkovsky HL (1995) "Acetaminophen hepatotoxicity, fasting, and ethanol." JAMA, 274, p. 301
  11. Nelson EB, Temple AR (1995) "Acetaminophen hepatotoxicity, fasting, and ethanol." JAMA, 274, p. 301
  12. Zimmerman HJ, Maddrey WC (1995) "Acetaminophen (paracetamol) hepatotoxicity with regular intake of alcohol: analysis of instances of therapeutic misadventure." Hepatology, 22, p. 767-73
View all 12 references

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Moderate

aspirin food

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide)

GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.

MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.

References

  1. (2002) "Product Information. Motrin (ibuprofen)." Pharmacia and Upjohn

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Moderate

salicylamide food

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide)

GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.

MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.

References

  1. (2002) "Product Information. Motrin (ibuprofen)." Pharmacia and Upjohn

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Minor

caffeine food

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide)

The effect of grapefruit juice on the pharmacologic activity of caffeine is controversial. One report suggests that grapefruit juice increases the effect of caffeine. The proposed mechanism is inhibition of cytochrome P-450 metabolism of caffeine. However, a well-conducted pharmacokinetic/pharmacodynamic study did not demonstrate this effect. The clinical significance of this potential interaction is unknown.

References

  1. (1995) "Grapefruit juice interactions with drugs." Med Lett Drugs Ther, 37, p. 73-4
  2. Maish WA, Hampton EM, Whitsett TL, Shepard JD, Lovallo WR (1996) "Influence of grapefruit juice on caffeine pharmacokinetics and pharmacodynamics." Pharmacotherapy, 16, p. 1046-52

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Minor

aspirin food

Applies to: Saleto (acetaminophen / aspirin / caffeine / salicylamide)

One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster.

References

  1. Yoovathaworn KC, Sriwatanakul K, Thithapandha A (1986) "Influence of caffeine on aspirin pharmacokinetics." Eur J Drug Metab Pharmacokinet, 11, p. 71-6

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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
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 interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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