Caution should be taken while administering TRI-V vaginal suppository concomitantly with alcohol and other drugs such as amiodarone, astemizole, terfenadine, disulfiram, phenytoin, phenobarbital, fluorouracil, carbamazepine, lithium, oral anticoagulants, cyclosporine, cimetidine, acenocoumarol, anisindione, dicoumarol, phenindione, phenprocoumon, warfarin, cisapride, fosphenytoin, fentanyl, glimepiride, oxybutynin, oxycodone, pimozide, tolterodine, trimetrexate and propranolol.