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Drug Interactions between Exforge and Proquin XR

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

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Interactions between your drugs

Moderate

ciprofloxacin amLODIPine

Applies to: Proquin XR (ciprofloxacin) and Exforge (amlodipine / valsartan)

MONITOR: Coadministration with CYP450 3A4 inhibitors may increase the plasma concentrations of amlodipine, which is a substrate of the isoenzyme. In 8 elderly hypertensive patients, administration of a single 5 mg dose of amlodipine in combination with the moderate CYP450 3A4 inhibitor diltiazem (180 mg orally daily for 3 days) resulted in a nearly 60% increase in amlodipine peak plasma concentration (Cmax) and systemic exposure (AUC). Associated systolic, diastolic, and standing blood pressures decreased compared to those obtained with amlodipine alone. Erythromycin, another moderate inhibitor, did not significantly alter amlodipine systemic exposure in healthy volunteers. However, pharmacokinetic changes may be more pronounced in elderly patients.

MANAGEMENT: Close monitoring of clinical response and tolerance is recommended if amlodipine is prescribed with potent or moderate CYP450 3A4 inhibitors. Dosage reduction may be required for amlodipine. Patients should be advised to seek medical attention if they experience edema or swelling of the lower extremities; sudden, unexplained weight gain; difficulty breathing; chest pain or tightness; or hypotension as indicated by dizziness, fainting, or orthostasis.

References

  1. (2002) "Product Information. Norvasc (amlodipine)." Pfizer U.S. Pharmaceuticals
  2. Sasaki M, Maeda A, Fujimura A (2001) "Influence of diltiazem on the pharmacokinetics of amlodipine in elderly hypertensive patients." Eur J Clin Pharmacol, 57, p. 85-6
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
  5. Cerner Multum, Inc. "Australian Product Information."
View all 5 references

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Drug and food interactions

Moderate

ciprofloxacin food

Applies to: Proquin XR (ciprofloxacin)

ADJUST DOSING INTERVAL: Concurrent ingestion of dairy products (milk, yogurt) or calcium-fortified foods (i.e., cereal, orange juice) may decrease the activity of certain oral fluoroquinolone antibiotics. The mechanism is chelation of calcium and the quinolone, resulting in decreased bioavailability. In the case of orange juice, inhibition of intestinal transport mechanisms (P-glycoprotein or organic anion-transporting polypeptides) by flavones may also be involved. One study reported an average 41% decrease in maximum plasma concentrations and a 38% decrease in AUC when ciprofloxacin was given with calcium-fortified orange juice instead of water. Administration of ciprofloxacin tablets with enteral nutrition may reduce its bioavailability and maximum serum concentrations. Data have been conflicting and variable by the type of enteral nutrition product, location of the feeding tube, and patient characteristics. Decreased absorption is expected if ciprofloxacin is given by jejunostomy tube.

MANAGEMENT: Oral ciprofloxacin should not be taken with dairy products or calcium-fortified foods alone, but may be taken with meals that contain these products. When taken alone, dairy products or calcium-fortified foods should be ingested at least 2 hours before or after ciprofloxacin administration. When ciprofloxacin tablets are administered to patients receiving continuous enteral nutrition, some experts recommend that the tube feeding should be interrupted for at least 1 hour before and 2 hours after the dose of ciprofloxacin is given. Patients should be monitored for altered antimicrobial efficacy and switched to intravenous ciprofloxacin if necessary. If no enteral route besides a jejunostomy tube is available, it is also recommended to switch to intravenous ciprofloxacin. According to the manufacturer, ciprofloxacin oral suspension should not be administered via nasogastric or feeding tubes due to its physical characteristics.

References

  1. (2002) "Product Information. Cipro (ciprofloxacin)." Bayer
  2. Yuk JH, Nightingale CH, Sweeney KR, Quintiliani R, Lettieri JT, Forst RW (1989) "Relative bioavailability in healthy volunteers of ciprofloxacin administered through a nasogastric tube with and without enteral feeding." Antimicrob Agents Chemother, 33, p. 1118-20
  3. Yuk JH, Nightingale CH, Quintiliani R (1990) "Absorption of ciprofloxacin administered through a nasogastric or a nasoduodenal tube in volunteers and patients receiving enteral nutrition." Diagn Microbiol Infect Dis, 13, p. 99-102
  4. Noer BL, Angaran DW (1990) "The effect of enteral feedings on ciprofloxacin pharmacokinetics." Pharmacotherapy, 10, p. 254
  5. Neuhofel AL, Wilton JH, Victory JM, Hejmanowsk LG, Amsden GW (2002) "Lack of bioequivalence of ciprofloxacin when administered with calcium-fortified orange juice: a new twist on an old interaction." J Clin Pharmacol, 42, p. 461-6
  6. Wohlt PD, Zheng L, Gunderson S, Balzar SA, Johnson BD, Fish JT (2009) "Recommendations for the use of medications with continuous enteral nutrition." Am J Health Syst Pharm, 66, p. 1438-67
View all 6 references

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Moderate

valsartan food

Applies to: Exforge (amlodipine / valsartan)

GENERALLY AVOID: Moderate-to-high dietary intake of potassium, especially salt substitutes, may increase the risk of hyperkalemia in some patients who are using angiotensin II receptor blockers (ARBs). ARBs can promote hyperkalemia through inhibition of angiotensin II-induced aldosterone secretion. Patients with diabetes, heart failure, dehydration, or renal insufficiency have a greater risk of developing hyperkalemia.

MANAGEMENT: Patients should receive dietary counseling and be advised to not use potassium-containing salt substitutes or over-the-counter potassium supplements without consulting their physician. If salt substitutes are used concurrently, regular monitoring of serum potassium levels is recommended. Patients should also be advised to seek medical attention if they experience symptoms of hyperkalemia such as weakness, irregular heartbeat, confusion, tingling of the extremities, or feelings of heaviness in the legs.

References

  1. (2001) "Product Information. Cozaar (losartan)." Merck & Co., Inc
  2. (2001) "Product Information. Diovan (valsartan)." Novartis Pharmaceuticals

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Moderate

amLODIPine food

Applies to: Exforge (amlodipine / valsartan)

MONITOR: Many psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants) exhibit hypotensive effects, especially during initiation of therapy and dose escalation. Coadministration with antihypertensives and other hypotensive agents, in particular vasodilators and alpha-blockers, may result in additive effects on blood pressure and orthostasis.

MANAGEMENT: Caution and close monitoring for development of hypotension is advised during coadministration of these agents. Some authorities recommend avoiding alcohol in patients receiving vasodilating antihypertensive drugs. Patients should be advised to avoid rising abruptly from a sitting or recumbent position and to notify their physician if they experience dizziness, lightheadedness, syncope, orthostasis, or tachycardia.

References

  1. Sternbach H (1991) "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol, 11, p. 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA (1984) "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med, 101, p. 498-9
  3. Feder R (1991) "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry, 52, p. 139
  4. Ellison JM, Milofsky JE, Ely E (1990) "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry, 51, p. 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. (2001) "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit, 23, p. 435-40
  6. Cerner Multum, Inc. "Australian Product Information."
  7. Pacher P, Kecskemeti V (2004) "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des, 10, p. 2463-75
  8. Andrews C, Pinner G (1998) "Postural hypotension induced by paroxetine." BMJ, 316, p. 595
View all 8 references

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Moderate

ciprofloxacin food

Applies to: Proquin XR (ciprofloxacin)

ADJUST DOSING INTERVAL: Oral preparations that contain magnesium, aluminum, or calcium may significantly decrease the gastrointestinal absorption of quinolone antibiotics. Absorption may also be reduced by sucralfate, which contains aluminum, as well as other polyvalent cations such as iron and zinc. The mechanism is chelation of quinolones by polyvalent cations, forming a complex that is poorly absorbed from the gastrointestinal tract. The bioavailability of ciprofloxacin has been reported to decrease by as much as 90% when administered with antacids containing aluminum or magnesium hydroxide.

MANAGEMENT: When coadministration cannot be avoided, quinolone antibiotics should be dosed either 2 to 4 hours before or 4 to 6 hours after polyvalent cation-containing products to minimize the potential for interaction. When coadministered with Suprep Bowel Prep (magnesium/potassium/sodium sulfates), the manufacturer recommends administering fluoroquinolone antibiotics at least 2 hours before and not less than 6 hours after Suprep Bowel Prep to avoid chelation with magnesium. Please consult individual product labeling for specific recommendations.

References

  1. Polk RE, Helay DP, Sahai J, Drwal L, Racht E (1989) "Effect of ferrous sulfate and multivitamins with zinc on absorption of ciprofloxacin in normal volunteers." Antimicrob Agents Chemother, 33, p. 1841-4
  2. Nix DE, Watson WA, Lener ME, et al. (1989) "Effects of aluminum and magnesium antacids and ranitidine on the absorption of ciprofloxacin." Clin Pharmacol Ther, 46, p. 700-5
  3. Garrelts JC, Godley PJ, Peterie JD, Gerlach EH, Yakshe CC (1990) "Sucralfate significantly reduces ciprofloxacin concentrations in serum." Antimicrob Agents Chemother, 34, p. 931-3
  4. Frost RW, Lasseter KC, Noe AJ, Shamblen EC, Lettieri JT (1992) "Effects of aluminum hydroxide and calcium carbonate antacids on the bioavailability of ciprofloxacin." Antimicrob Agents Chemother, 36, p. 830-2
  5. Yuk JH (1989) "Ciprofloxacin levels when receiving sucralfate." J Am Geriatr Soc, 262, p. 901
  6. Deppermann KM, Lode H, Hoffken G, Tschink G, Kalz C, Koeppe P (1989) "Influence of ranitidine, pirenzepine, and aluminum magnesium hydroxide on the bioavailability of various antibiotics, including amoxicillin, cephalexin, doxycycline, and amoxicillin-clavulanic acid." Antimicrob Agents Chemother, 33, p. 1901-7
  7. Campbell NR, Kara M, Hasinoff BB, Haddara WM, McKay DW (1992) "Norfloxacin interaction with antacids and minerals." Br J Clin Pharmacol, 33, p. 115-6
  8. Parpia SH, Nix DE, Hejmanowski LG, Goldstein HR, Wilton JH, Schentag JJ (1989) "Sucralfate reduces the gastrointestinal absorption of norfloxacin." Antimicrob Agents Chemother, 33, p. 99-102
  9. Nix DE, Wilton JH, Ronald B, Distlerath L, Williams VC, Norman A (1990) "Inhibition of norfloxacin absorption by antacids." Antimicrob Agents Chemother, 34, p. 432-5
  10. Akerele JO, Okhamafe AO (1991) "Influence of oral co-administered metallic drugs on ofloxacin pharmacokinetics." J Antimicrob Chemother, 28, p. 87-94
  11. Wadworth AN, Goa KL (1991) "Lomefloxacin: a review of its antibacterial activity, pharmacokinetic properties and therapeutic use." Drugs, 42, p. 1018-60
  12. Shimada J, Shiba K, Oguma T, et al. (1992) "Effect of antacid on absorption of the quinolone lomefloxacin." Antimicrob Agents Chemother, 36, p. 1219-24
  13. Sahai J, Healy DP, Stotka J, Polk RE (1993) "The influence of chronic administration of calcium carbonate on the bioavailability of oral ciprofloxacin." Br J Clin Pharmacol, 35, p. 302-4
  14. Lehto P, Kivisto KT (1994) "Effect of sucralfate on absorption of norfloxacin and ofloxacin." Antimicrob Agents Chemother, 38, p. 248-51
  15. Noyes M, Polk RE (1988) "Norfloxacin and absorption of magnesium-aluminum." Ann Intern Med, 109, p. 168-9
  16. Grasela TH Jr, Schentag JJ, Sedman AJ, et al. (1989) "Inhibition of enoxacin absorption by antacids or ranitidine." Antimicrob Agents Chemother, 33, p. 615-7
  17. Lehto P, Kivisto KT (1994) "Different effects of products containing metal ions on the absorption of lomefloxacin." Clin Pharmacol Ther, 56, p. 477-82
  18. Spivey JM, Cummings DM, Pierson NR (1996) "Failure of prostatitis treatment secondary to probable ciprofloxacin-sucralfate drug interaction." Pharmacotherapy, 16, p. 314-6
  19. (2001) "Product Information. Levaquin (levofloxacin)." Ortho McNeil Pharmaceutical
  20. (2001) "Product Information. Raxar (grepafloxacin)." Glaxo Wellcome
  21. (2001) "Product Information. Zagam (sparfloxacin)." Rhone Poulenc Rorer
  22. (2001) "Product Information. Trovan (trovafloxacin)." Pfizer U.S. Pharmaceuticals
  23. Teng R, Dogolo LC, Willavize SA, Friedman HL, Vincent J (1997) "Effect of Maalox and omeprazole on the bioavailability of trovafloxacin." J Antimicrob Chemother, 39 Suppl B, p. 93-7
  24. Zix JA, Geerdes-Fenge HF, Rau M, Vockler J, Borner K, Koeppe P, Lode H (1997) "Pharmacokinetics of sparfloxacin and interaction with cisapride and sucralfate." Antimicrob Agents Chemother, 41, p. 1668-72
  25. Honig PK, Gillespie BK (1998) "Clinical significance of pharmacokinetic drug interactions with over-the-counter (OTC) drugs." Clin Pharmacokinet, 35, p. 167-71
  26. Johnson RD, Dorr MB, Talbot GH, Caille G (1998) "Effect of Maalox on the oral absorption of sparfloxacin." Clin Ther, 20, p. 1149-58
  27. Lober S, Ziege S, Rau M, Schreiber G, Mignot A, Koeppe P, Lode H (1999) "Pharmacokinetics of gatifloxacin and interaction with an antacid containing aluminum and magnesium." Antimicrob Agents Chemother, 43, p. 1067-71
  28. Allen A, Vousden M, Porter A, Lewis A (1999) "Effect of Maalox((R)) on the bioavailability of oral gemifloxacin in healthy volunteers." Chemotherapy, 45, p. 504-11
  29. Kamberi M, Nakashima H, Ogawa K, Oda N, Nakano S (2000) "The effect of staggered dosing of sucralfate on oral bioavailability of sparfloxacin." Br J Clin Pharmacol, 49, p. 98-103
  30. (2003) "Product Information. Factive (gemifloxacin)." *GeneSoft Inc
  31. (2010) "Product Information. Suprep Bowel Prep Kit (magnesium/potassium/sodium sulfates)." Braintree Laboratories
  32. (2017) "Product Information. Baxdela (delafloxacin)." Melinta Therapeutics, Inc.
View all 32 references

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Moderate

amLODIPine food

Applies to: Exforge (amlodipine / valsartan)

MONITOR: Calcium-containing products may decrease the effectiveness of calcium channel blockers by saturating calcium channels with calcium. Calcium chloride has been used to manage acute severe verapamil toxicity.

MANAGEMENT: Management consists of monitoring the effectiveness of calcium channel blocker therapy during coadministration with calcium products.

References

  1. Henry M, Kay MM, Viccellio P (1985) "Cardiogenic shock associated with calcium-channel and beta blockers: reversal with intravenous calcium chloride." Am J Emerg Med, 3, p. 334-6
  2. Moller IW (1987) "Cardiac arrest following intravenous verapamil combined with halothane anaesthesia." Br J Anaesth, 59, p. 522-6
  3. Oszko MA, Klutman NE (1987) "Use of calcium salts during cardiopulmonary resuscitation for reversing verapamil-associated hypotension." Clin Pharm, 6, p. 448-9
  4. Schoen MD, Parker RB, Hoon TJ, et al. (1991) "Evaluation of the pharmacokinetics and electrocardiographic effects of intravenous verapamil with intravenous calcium chloride pretreatment in normal subjects." Am J Cardiol, 67, p. 300-4
  5. O'Quinn SV, Wohns DH, Clarke S, Koch G, Patterson JH, Adams KF (1990) "Influence of calcium on the hemodynamic and anti-ischemic effects of nifedipine observed during treadmill exercise testing." Pharmacotherapy, 10, p. 247
  6. Woie L, Storstein L (1981) "Successful treatment of suicidal verapamil poisoning with calcium gluconate." Eur Heart J, 2, p. 239-42
  7. Morris DL, Goldschlager N (1983) "Calcium infusion for reversal of adverse effects of intravenous verapamil." JAMA, 249, p. 3212-3
  8. Guadagnino V, Greengart A, Hollander G, Solar M, Shani J, Lichstein E (1987) "Treatment of severe left ventricular dysfunction with calcium chloride in patients receiving verapamil." J Clin Pharmacol, 27, p. 407-9
  9. Luscher TF, Noll G, Sturmer T, Huser B, Wenk M (1994) "Calcium gluconate in severe verapamil intoxication." N Engl J Med, 330, p. 718-20
  10. Bar-Or D, Gasiel Y (1981) "Calcium and calciferol antagonise effect of verapamil in atrial fibrillation." Br Med J (Clin Res Ed), 282, p. 1585-6
  11. Lipman J, Jardine I, Roos C, Dreosti L (1982) "Intravenous calcium chloride as an antidote to verapamil-induced hypotension." Intensive Care Med, 8, p. 55-7
  12. McMillan R (1988) "Management of acute severe verapamil intoxication." J Emerg Med, 6, p. 193-6
  13. Perkins CM (1978) "Serious verapamil poisoning: treatment with intravenous calcium gluconate." Br Med J, 2, p. 1127
  14. Moroni F, Mannaioni PF, Dolara A, Ciaccheri M (1980) "Calcium gluconate and hypertonic sodium chloride in a case of massive verapamil poisoning." Clin Toxicol, 17, p. 395-400
View all 14 references

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Moderate

ciprofloxacin food

Applies to: Proquin XR (ciprofloxacin)

MONITOR: Coadministration with certain quinolones may increase the plasma concentrations and pharmacologic effects of caffeine due to inhibition of the CYP450 1A2 metabolism of caffeine. Quinolones that may inhibit CYP450 1A2 include ciprofloxacin, enoxacin, grepafloxacin, nalidixic acid, norfloxacin, pipemidic acid, and pefloxacin (not all commercially available). In healthy volunteers, enoxacin (100 to 400 mg twice daily) increased systemic exposure (AUC) of caffeine by 2- to 5-fold and reduced its clearance by approximately 80%. Pipemidic acid (400 to 800 mg twice daily) increased AUC of caffeine by 2- to 3-fold and reduced its clearance by approximately 60%. Ciprofloxacin (250 to 750 mg twice daily) increased AUC and elimination half-life of caffeine by 50% to over 100%, and reduced its clearance by 30% to 50%. Norfloxacin 400 mg twice daily increased caffeine AUC by 16%, while 800 mg twice daily increased caffeine AUC by 52% and reduced its clearance by 35%. Pefloxacin (400 mg twice daily) has been shown to reduce caffeine clearance by 47%.

MANAGEMENT: Patients using caffeine-containing products should be advised that increased adverse effects such as headache, tremor, restlessness, nervousness, insomnia, tachycardia, and blood pressure increases may occur during coadministration with quinolones that inhibit CYP450 1A2. Caffeine intake should be limited when taking high dosages of these quinolones. If an interaction is suspected, other quinolones such as gatifloxacin, gemifloxacin, levofloxacin, lomefloxacin, moxifloxacin, and ofloxacin may be considered, since they are generally believed to have little or no effect on CYP450 1A2 or have been shown not to interact with caffeine.

References

  1. Polk RE (1989) "Drug-drug interactions with ciprofloxacin and other fluoroquinolones." Am J Med, 87, s76-81
  2. Healy DP, Polk RE, Kanawati L, Rock DT, Mooney ML (1989) "Interaction between oral ciprofloxacin and caffeine in normal volunteers." Antimicrob Agents Chemother, 33, p. 474-8
  3. Harder S, Fuhr U, Staib AH, Wolf T (1989) "Ciprofloxacin-caffeine: a drug interaction established using in vivo and in vitro investigations." Am J Med, 87, p. 89-91
  4. Carbo ML, Segura J, De la Torre R, et al. (1989) "Effect of quinolones on caffeine disposition." Clin Pharmacol Ther, 45, p. 234-40
  5. (1993) "Product Information. Penetrax (enoxacin)." Rhone-Poulenc Rorer, Collegeville, PA.
  6. Mahr G, Sorgel F, Granneman GR, et al. (1992) "Effects of temafloxacin and ciprofloxacin on the pharmacokinetics of caffeine." Clin Pharmacokinet, 22, p. 90-7
  7. (2002) "Product Information. Cipro (ciprofloxacin)." Bayer
  8. (2001) "Product Information. Noroxin (norfloxacin)." Merck & Co., Inc
  9. Staib AH, Stille W, Dietlein G, et al. (1987) "Interaction between quinolones and caffeine." Drugs, 34 Suppl 1, p. 170-4
  10. Stille W, Harder S, Micke S, et al. (1987) "Decrease of caffeine elimination in man during co-administration of 4-quinolones." J Antimicrob Chemother, 20, p. 729-34
  11. Harder S, Staib AH, Beer C, Papenburg A, Stille W, Shah PM (1988) "4-Quinolones inhibit biotransformation of caffeine." Eur J Clin Pharmacol, 35, p. 651-6
  12. Nicolau DP, Nightingale CH, Tessier PR, et al. (1995) "The effect of fleroxacin and ciprofloxacin on the pharmacokinetics of multiple dose caffeine." Drugs, 49 Suppl 2, p. 357-9
  13. (2001) "Product Information. Raxar (grepafloxacin)." Glaxo Wellcome
  14. Carrillo JA, Benitez J (2000) "Clinically significant pharmacokinetic interactions between dietary caffeine and medications." Clin Pharmacokinet, 39, p. 127-53
  15. Fuhr U, Wolff T, Harder S, Schymanski P, Staib AH (1990) "Quinolone inhibition of cytochrome P-450 dependent caffeine metabolism in human liver microsomes." Drug Metab Dispos, 18, p. 1005-10
  16. Kinzig-Schippers M, Fuhr U, Zaigler M, et al. (1999) "Interaction of pefloxacin and enoxacin with the human cytochrome P450 enzyme CYP1A2." Clin Pharmacol Ther, 65, p. 262-74
  17. Healy DP, Schoenle JR, Stotka J, Polk RE (1991) "Lack of interaction between lomefloxacin and caffeine in normal volunteers." Antimicrob Agents Chemother, 35, p. 660-4
View all 17 references

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Minor

amLODIPine food

Applies to: Exforge (amlodipine / valsartan)

The consumption of grapefruit juice may slightly increase plasma concentrations of amlodipine. The mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits. Data have been conflicting and the clinical significance is unknown. Monitoring for calcium channel blocker adverse effects (e.g., headache, hypotension, syncope, tachycardia, edema) is recommended.

References

  1. Bailey DG, Arnold JMO, Spence JD (1994) "Grapefruit juice and drugs - how significant is the interaction." Clin Pharmacokinet, 26, p. 91-8
  2. Josefsson M, Zackrisson AL, Ahlner J (1996) "Effect of grapefruit juice on the pharmacokinetics of amlodipine in healthy volunteers." Eur J Clin Pharmacol, 51, p. 189-93
  3. Bailey DG, Malcolm J, Arnold O, Spence JD (1998) "Grapefruit juice-drug interactions." Br J Clin Pharmacol, 46, p. 101-10
  4. Vincent J, Harris SI, Foulds G, Dogolo LC, Willavize S, Friedman HL (2000) "Lack of effect of grapefruit juice on the pharmacokinetics and pharmacodynamics of amlodipine." Br J Clin Pharmacol, 50, p. 455-63
  5. Josefsson M, Ahlner J (2002) "Amlodipine and grapefruit juice." Br J Clin Pharmacol, 53, 405; discussion 406
  6. Kane GC, Lipsky JJ (2000) "Drug-grapefruit juice interactions." Mayo Clin Proc, 75, p. 933-42
View all 6 references

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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.


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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.