Diosmin - Acetaminophen, Diphenhydramine, Pseudoephedrine Interaction Details

Interaction Details

Acetaminophen, Diphenhydramine, Pseudoephedrine is classified as belonging to the following category: Cytochrome P450 2E1 (Cyp2E1) Substrates

Theoretically, diosmin might inhibit the metabolism of CYP2E1 substrates.
Chlorzoxazone is metabolized by CYP2E1 enzymes. A pharmacokinetic study in humans shows that taking diosmin (Venex 500) 500 mg daily for 9 days prior to oral administration of chlorzoxazone (Paraflex 250) 250 mg increases blood levels of chlorzoxazone by 34% and decreases chlorzoxazone clearance by 40%. It is speculated that diosmin reduces the metabolism of chlorzoxazone by inhibiting CYP2E1.

Interaction Rating

Moderate

Likelihood of Occurrence

Possible

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists

References

Rajnarayana K, Venkatesham A, Nagulu M, Srinivas M, Krishna DR. Influence of diosmin pretreatment on the pharmacokinetics of chlorzoxazone in healthy male volunteers. Drug Metabol Drug Interact. 2008;23(3-4):311-21.

Diosmin - More Interactions

Diosmin interacts with 839 drugs

Interaction Rating Key

These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.

Major	The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur.
Moderate	Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur.
Minor	Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction.
Unknown	No interactions have been reported or no interaction data is currently available.