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Drug Interactions between Dyfilin GG and Flatulex

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

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Moderate

dyphylline charcoal

Applies to: Dyfilin GG (dyphylline / guaifenesin) and Flatulex (charcoal / simethicone)

GENERALLY AVOID: Charcoal may reduce the absorption of many drugs and can absorb enterohepatically circulated drugs. Clinical utility may be the reduction either of the effects or of the toxicity of many drugs. Activated charcoal may adsorb any therapeutic agents administered while it is in the gastrointestinal tract.

MANAGEMENT: The regular ingestion of charcoal should be avoided by patients requiring maintenance medications. If concomitant use is necessary, the dosage or route of administration may need to be altered.

References

  1. Decker WJ, Shpall RA, Corby DG "Inhibition of aspirin absorption by activated charcoal and apomorphine." Clin Pharmacol Ther 10 (1969): 710-3
  2. Knadler MP, Bergstrom RF, Callaghan JT, Obermeyer BD, Rubin A "Absorption studies of the H2-blocker nizatidine." Clin Pharmacol Ther 42 (1987): 514-20
  3. Wing LM, Miners JO, Birkett DJ, et al. "Lidocaine disposition: sex differences and effects of cimetidine." Clin Pharmacol Ther 35 (1984): 695-701
  4. Scheufler E, Bos I "Influence of peroral charcoal on pharmacokinetics and intestinal toxicity of intravenously given methotrexate." Arch Int Pharmacodyn Ther 261 (1983): 180-5
  5. Gadgil SD, Damle SR, Advani SH, Vaidya AB "Effect of activated charcoal on the pharmacokinetics of high-dose methotrexate." Cancer Treat Rep 66 (1982): 1169-71
  6. Park GD, Spector R, Goldberg MJ, Johnson GF "Expanded role of charcoal therapy in the poisoned and overdosed patient." Arch Intern Med 146 (1986): 969-73
  7. Watson WA "Factors influencing the clinical efficacy of activated charcoal." Drug Intell Clin Pharm 21 (1987): 160-6
  8. Kivisto KT, Neuvonen PJ "The effect of cholestyramine and activated charcoal on glipizide absorption." Br J Clin Pharmacol 30 (1990): 733-6
  9. Dolgin JG, Nix DE, Sanchez J, Watson WA "Pharmacokinetic simulation of the effect of multiple-dose activated charcoal in phenytoin poisoning: report of two pediatric cases." DICP 25 (1991): 646-9
  10. Rowden AM, Spoor JE, Bertino JS, Jr "The effect of activated charcoal on phenytoin pharmacokinetics." Ann Emerg Med 19 (1990): 1144-7
  11. Farrar HC, Herold DA, Reed MD "Acute valproic acid intoxication: enhanced drug clearance with oral-activated charcoal." Crit Care Med 21 (1993): 299-301
  12. Howard CE, Roberts RS, Ely DS, Moye RA "Use of multiple-dose activated charcoal in phenytoin toxicity." Ann Pharmacother 28 (1994): 201-3
  13. Chernish SM, Wolen RL, Rodda BE "Adsorption of propoxyphene hydrochloride by activated charcoal." Clin Toxicol 5 (1972): 317-29
  14. Glab WN, Corby DG, Decker WJ, Coldiron VR "Decreased absorption of propoxyphene by activated charcoal." J Toxicol Clin Toxicol 19 (1982): 129-38
  15. Karkkainen S, Neuvonen PJ "Effect of oral charcoal and urine pH on dextropropoxyphene pharmacokinetics." Int J Clin Pharmacol Ther Toxicol 23 (1985): 219-25
  16. Wakabayashi Y, Maruyama S, Hachimura K, Ohwada T "Activated charcoal interrupts enteroenteric circulation of phenobarbital." J Toxicol Clin Toxicol 32 (1994): 419-24
  17. Reed MD "Oral activated charcoal therapy." Am J Emerg Med 6 (1988): 318
  18. Neuvonen PJ "Clinical pharmacokinetics of oral activated charcoal in acute intoxications." Clin Pharmacokinet 7 (1982): 465-89
  19. Naveau S, Bonhomme L, Preaux N, Chaput JC "A pure charcoal suspension for colonoscopic tattoo." Gastrointest Endosc 37 (1991): 624-5
  20. Ilkhanipour K, Yealy DM, Krenzelok EP "Activated charcoal surface area and its role in multiple-dose charcoal therapy." Am J Emerg Med 11 (1993): 583-5
  21. Saetta JP "Gastric decontaminating procedures: is it time to call a stop?" J R Soc Med 86 (1993): 396-9
  22. Orisakwe OE "Activated charcoal: is failure to use it negligence or ignorance?" South Med J 87 (1994): 165-8
  23. Herrington AM, Clifton GD "Toxicology and management of acute drug ingestions in adults." Pharmacotherapy 15 (1995): 182-200
  24. Bonuccelli U, Piccini P, Del Dotto P, Pavese N, D'Antonio P, Muratorio A "Apomorphine test in de novo Parkinson's disease." Funct Neurol 7 (1992): 295-8
  25. "Product Information. Trileptal (oxcarbazepine)." Novartis Pharmaceuticals PROD (2001):
View all 25 references

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Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

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

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