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Drug Interactions between Diastat and Proben-C

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

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Interactions between your drugs

Minor

probenecid diazePAM

Applies to: Proben-C (colchicine / probenecid) and Diastat (diazepam)

Limited clinical evidence suggests that benzodiazepine effects may have a more rapid onset and be more prolonged when probenecid is used concurrently. The mechanism may be related to interference with hepatic benzodiazepine conjugation. The clinical significance is unknown. Patients should be monitored for prolonged or excessive CNS depression. Benzodiazepine dosage reductions may be necessary.

References

  1. Abernethy DR, Greenblatt DJ, Ameer B, Shader RI "Probenecid impairment of acetaminophen and lorazepam clearance: direct inhibition of ether glucuronide formation." J Pharmacol Exp Ther 234 (1985): 345-9
  2. Dundee JW, Halliday NJ, McMurray TJ "Aspirin and probenecid pretreatment influences the potency of thiopentone and the onset of action of midazolam." Eur J Anaesthesiol 3 (1986): 247-51

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Drug and food interactions

Major

colchicine food

Applies to: Proben-C (colchicine / probenecid)

GENERALLY AVOID: Coadministration with grapefruit juice may increase the serum concentrations of colchicine. Clinical toxicity including myopathy, neuropathy, multiorgan failure, and pancytopenia may occur. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism and P-glycoprotein efflux in the gut wall by certain compounds present in grapefruits. A published case report describes an eight-year-old patient with familial Mediterranean fever who developed acute clinical colchicine intoxication after ingesting approximately one liter of grapefruit juice per day for two months prior to hospital admission while being treated with colchicine 2 mg/day. Her condition progressed to circulatory shock and multiorgan failure, but she recovered with supportive therapy after 24 days in the hospital. In a study of 21 healthy volunteers, administration of 240 mL grapefruit juice twice a day for 4 days was found to have no significant effect on the pharmacokinetics of a single 0.6 mg dose of colchicine. However, significant interactions have been reported with other CYP450 3A4 inhibitors such as clarithromycin, diltiazem, erythromycin, ketoconazole, ritonavir, and verapamil.

MANAGEMENT: Patients treated with colchicine should be advised to avoid the consumption of grapefruit and grapefruit juice, and to contact their physician if they experience symptoms of colchicine toxicity such as abdominal pain, nausea, vomiting, diarrhea, fatigue, myalgia, asthenia, hyporeflexia, paresthesia, and numbness.

References

  1. Pettinger WA "Clonidine, a new antihypertensive drug." N Engl J Med 293 (1975): 1179-80
  2. Caraco Y, Putterman C, Rahamimov R, Ben-Chetrit E "Acute colchicine intoxication: possible role of erythromycin administration." J Rheumatol 19 (1992): 494-6
  3. Schiff D, Drislane FW "Rapid-onset colchicine myoneuropathy." Arthritis Rheum 35 (1992): 1535-6
  4. Putterman C, Ben-Chetrit E, Caraco Y, Levy M "Colchicine intoxication: clinical pharmacology, risk factors, features, and management." Semin Arthritis Rheum 21 (1991): 143-55
  5. Boomershine KH "Colchicine-induced rhabdomyolysis." Ann Pharmacother 36 (2002): 824-6
  6. "Severe colchicine-macrolide interactions." Prescrire Int 12 (2003): 18-9
  7. Tateishi T, Soucek P, Caraco Y, Guengerich FP, Wood AJ "Colchicine biotransformation by human liver microsomes. Identification of CYP3A4 as the major isoform responsible for colchicine demethylation." Biochem Pharmacol 53 (1996): 111-6
  8. Dogukan A, Oymak FS, Taskapan H, Guven M, Tokgoz B, Utas C "Acute fatal colchicine intoxication in a patient on continuous ambulatory peritoneal dialysis (CAPD). Possible role of clarithromycin administration." Clin Nephrol 55 (2001): 181-2
  9. Rollot F, Pajot O, Chauvelot-Moachon L, Nazal EM, Kelaidi C, Blanche P "Acute colchicine intoxication during clarithromycin administration." Ann Pharmacother 38 (2004): 2074-7
  10. Wilbur K, Makowsky M "Colchicine myotoxicity: case reports and literature review." Pharmacotherapy 24 (2004): 1784-92
  11. Hung IF, Wu AK, Cheng VC, et al. "Fatal interaction between clarithromycin and colchicine in patients with renal insufficiency: a retrospective study." Clin Infect Dis 41 (2005): 291-300
  12. Cheng VC, Ho PL, Yuen KY "Two probable cases of serious drug interaction between clarithromycin and colchicine." South Med J 98 (2005): 811-3
  13. Akdag I, Ersoy A, Kahvecioglu S, Gullulu M, Dilek K "Acute colchicine intoxication during clarithromycin administration in patients with chronic renal failure." J Nephrol 19 (2006): 515-7
  14. van der Velden W, Huussen J, Ter Laak H, de Sevaux R "Colchicine-induced neuromyopathy in a patient with chronic renal failure: the role of clarithromycin." Neth J Med 66 (2008): 204-6
  15. Goldbart A, Press J, Sofer S, Kapelushnik J "Near fatal acute colchicine intoxication in a child. A case report." Eur J Pediatr 159 (2000): 895-7
  16. "Colchicine: serious interactions." Prescrire Int 17 (2008): 151-3
  17. "Product Information. Colcrys (colchicine)." AR Scientific Inc (2009):
  18. Dahan A, Amidon GL "Grapefruit juice and its constitueants augment colchicine intestinal absorption: potential hazardous interaction and the role of p-glycoprotein." Pharm Res 26 (2009): 883-92
  19. McKinnell J, Tayek JA "Short term treatment with clarithromycin resulting in colchicine-induced rhabdomyolysis." J Clin Rheumatol 15 (2009): 303-5
View all 19 references

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Moderate

diazePAM food

Applies to: Diastat (diazepam)

GENERALLY AVOID: Acute alcohol ingestion may potentiate the CNS depression and other CNS effects of many benzodiazepines. Tolerance may develop with chronic ethanol use. The mechanism may be decreased clearance of the benzodiazepines because of CYP450 hepatic enzyme inhibition. Also, it has been suggested that the cognitive deficits induced by benzodiazepines may be increased in patients who chronically consume large amounts of alcohol.

MONITOR: Grapefruit juice may increase the plasma concentrations of orally administered drugs that are substrates of the CYP450 3A4 isoenzyme. However, the interaction seems to affect primarily those drugs that undergo significant presystemic metabolism by CYP450 3A4 (i.e., drugs with low oral bioavailability), presumably due to the fact that grapefruit juice inhibits intestinal rather than hepatic CYP450 3A4. Because pharmacokinetic interactions involving grapefruit juice are often subject to a high degree of interpatient variability, the extent to which a given patient may be affected is difficult to predict.

MANAGEMENT: Patients should be advised to avoid alcohol during benzodiazepine therapy. Patients who regularly consume grapefruit or grapefruit juice should be monitored for adverse effects and altered plasma concentrations of drugs that undergo significant presystemic metabolism by CYP450 3A4. Grapefruit and grapefruit juice should be avoided if an interaction is suspected. Orange juice is not expected to interact with these drugs.

References

  1. Edgar B, Bailey D, Bergstrand R, et al. "Acute effects of drinking grapefruit juice on the pharmacokinetics and dynamics on felodipine and its potential clinical relevance." Eur J Clin Pharmacol 42 (1992): 313-7
  2. Jonkman JH, Sollie FA, Sauter R, Steinijans VW "The influence of caffeine on the steady-state pharmacokinetics of theophylline." Clin Pharmacol Ther 49 (1991): 248-55
  3. "Product Information. Valium (diazepam)." Roche Laboratories PROD (2002):
  4. Bailey DG, Arnold JM, Munoz C, Spence JD "Grapefruit juice--felodipine interaction: mechanism, predictability, and effect of naringin." Clin Pharmacol Ther 53 (1993): 637-42
  5. Bailey DG, Arnold JMO, Spence JD "Grapefruit juice and drugs - how significant is the interaction." Clin Pharmacokinet 26 (1994): 91-8
  6. "Product Information. Doral (quazepam)." Wallace Laboratories PROD (2001):
  7. Sigusch H, Hippius M, Henschel L, Kaufmann K, Hoffmann A "Influence of grapefruit juice on the pharmacokinetics of a slow release nifedipine formulation." Pharmazie 49 (1994): 522-4
  8. Bailey DG, Arnold JM, Strong HA, Munoz C, Spence JD "Effect of grapefruit juice and naringin on nisoldipine pharmacokinetics." Clin Pharmacol Ther 54 (1993): 589-94
  9. Yamreudeewong W, Henann NE, Fazio A, Lower DL, Cassidy TG "Drug-food interactions in clinical practice." J Fam Pract 40 (1995): 376-84
  10. "Grapefruit juice interactions with drugs." Med Lett Drugs Ther 37 (1995): 73-4
  11. Hukkinen SK, Varhe A, Olkkola KT, Neuvonen PJ "Plasma concentrations of triazolam are increased by concomitant ingestion of grapefruit juice." Clin Pharmacol Ther 58 (1995): 127-31
  12. Min DI, Ku YM, Geraets DR, Lee HC "Effect of grapefruit juice on the pharmacokinetics and pharmacodynamics of quinidine in healthy volunteers." J Clin Pharmacol 36 (1996): 469-76
  13. Majeed A, Kareem A "Effect of grapefruit juice on cyclosporine pharmacokinetics." Pediatr Nephrol 10 (1996): 395
  14. Clifford CP, Adams DA, Murray S, Taylor GW, Wilkins MR, Boobis AR, Davies DS "Pharmacokinetic and cardiac effects of terfenadine after inhibition of its metabolism by grapefruit juice." Br J Clin Pharmacol 42 (1996): p662
  15. Josefsson M, Zackrisson AL, Ahlner J "Effect of grapefruit juice on the pharmacokinetics of amlodipine in healthy volunteers." Eur J Clin Pharmacol 51 (1996): 189-93
  16. Kantola T, Kivisto KT, Neuvonen PJ "Grapefruit juice greatly increases serum concentrations of lovastatin and lovastatin acid." Clin Pharmacol Ther 63 (1998): 397-402
  17. Ozdemir M, Aktan Y, Boydag BS, Cingi MI, Musmul A "Interaction between grapefruit juice and diazepam in humans." Eur J Drug Metab Pharmacokinet 23 (1998): 55-9
  18. Bailey DG, Malcolm J, Arnold O, Spence JD "Grapefruit juice-drug interactions." Br J Clin Pharmacol 46 (1998): 101-10
  19. Bailey DG, Kreeft JH, Munoz C, Freeman DJ, Bend JR "Grapefruit juice felodipine interaction: Effect of naringin and 6',7'-dihydroxybergamottin in humans." Clin Pharmacol Ther 64 (1998): 248-56
  20. Garg SK, Kumar N, Bhargava VK, Prabhakar SK "Effect of grapefruit juice on carbamazepine bioavailability in patients with epilepsy." Clin Pharmacol Ther 64 (1998): 286-8
  21. Lilja JJ, Kivisto KT, Neuvonen PJ "Grapefruit juice-simvastatin interaction: Effect on serum concentrations of simvastatin, simvastatin acid, and HMG-CoA reductase inhibitors." Clin Pharmacol Ther 64 (1998): 477-83
  22. Fuhr U, Maier-Bruggemann A, Blume H, et al. "Grapefruit juice increases oral nimodipine bioavailability." Int J Clin Pharmacol Ther 36 (1998): 126-32
  23. Lilja JJ, Kivisto KT, Neuvonen PJ "Grapefruit juice increases serum concentrations of atorvastatin and has no effect on pravastatin." Clin Pharmacol Ther 66 (1999): 118-27
  24. Eagling VA, Profit L, Back DJ "Inhibition of the CYP3A4-mediated metabolism and P-glycoprotein-mediated transport of the HIV-I protease inhibitor saquinavir by grapefruit juice components." Br J Clin Pharmacol 48 (1999): 543-52
  25. Damkier P, Hansen LL, Brosen K "Effect of diclofenac, disulfiram, itraconazole, grapefruit juice and erythromycin on the pharmacokinetics of quinidine." Br J Clin Pharmacol 48 (1999): 829-38
  26. Lee AJ, Chan WK, Harralson AF, Buffum J, Bui BCC "The effects of grapefruit juice on sertraline metabolism: An in vitro and in vivo study." Clin Ther 21 (1999): 1890-9
  27. Dresser GK, Spence JD, Bailey DG "Pharmacokinetic-pharmacodynamic consequences and clinical relevance of cytochrome P450 3A4 inhibition." Clin Pharmacokinet 38 (2000): 41-57
  28. Gunston GD, Mehta U "Potentially serious drug interactions with grapefruit juice." S Afr Med J 90 (2000): 41
  29. Takanaga H, Ohnishi A, Maatsuo H, et al. "Pharmacokinetic analysis of felodipine-grapefruit juice interaction based on an irreversible enzyme inhibition model." Br J Clin Pharmacol 49 (2000): 49-58
  30. Libersa CC, Brique SA, Motte KB, et al. "Dramatic inhibition of amiodarone metabolism induced by grapefruit juice." Br J Clin Pharmacol 49 (2000): 373-8
  31. Bailey DG, Dresser GR, Kreeft JH, Munoz C, Freeman DJ, Bend JR "Grapefruit-felodipine interaction: Effect of unprocessed fruit and probable active ingredients." Clin Pharmacol Ther 68 (2000): 468-77
  32. Zaidenstein R, Soback S, Gips M, Avni B, Dishi V, Weissgarten Y, Golik A, Scapa E "Effect of grapefruit juice on the pharmacokinetics of losartan and its active metabolite E3174 in healthy volunteers." Ther Drug Monit 23 (2001): 369-73
  33. Sato J, Nakata H, Owada E, Kikuta T, Umetsu M, Ito K "Influence of usual intake of dietary caffeine on single-dose kinetics of theophylline in healthy human subjects." Eur J Clin Pharmacol 44 (1993): 295-8
  34. Flanagan D "Understanding the grapefruit-drug interaction." Gen Dent 53 (2005): 282-5; quiz 286
View all 34 references

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Minor

diazePAM food

Applies to: Diastat (diazepam)

One study has reported a 22% reduction in diazepam plasma levels when coadministered with caffeine. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that changes to caffeine consumption habits may impact the efficacy of diazepam therapy.

References

  1. Ghoneim MM, Hinrichs JV, Chiang CK, Loke WH "Pharmacokinetic and pharmacodynamic interactions between caffeine and diazepam." J Clin Psychopharmacol 6 (1986): 75-80

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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.

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