Influence of diosmin pretreatment on the pharmacokinetics of chlorzoxazone in healthy male volunteers.

Chlorzoxazone, a centrally acting muscle relaxant, is a probe for cytochrome P450 2E1 (CYP2E1). The first part of the study consisted of oral administration of 250 mg of chlorzoxazone (Paraflex 250 tablet) alone to 12 healthy male volunteers. Blood samples were collected from the antecubital vein at intervals of 0, 0.

Influence of some bioflavonoids on the transport of nitrendipine.

Flavonoids form a large class of phenolic substances widely distributed in nature and exhibit several biological effects. P-glycoprotein is part of a large family of efflux transporters found in the gut, gonads and other organs. Male albino rats were used for this study.

Bioavailability of diclofenac sodium after pretreatment with diosmin in healthy volunteers.

Diclofenac sodium is a non-steroidal anti-inflammatory drug (NSAID). It undergoes extensive Phase I and Phase II metabolism and in vitro it is a specific CYP2C9 substrate. The first part of the study consisted of oral administration of 100 mg of diclofenac sodium (Voveran100) to 12 healthy male volunteers.

Study on the influence of silymarin pretreatment on metabolism and disposition of metronidazole.

A clinical study was undertaken in 12 healthy volunteers. At first, subjects received metronidazole (CAS 443-48-1; a substrate for cytochrome CYP3A4 and CYP2C9) alone at a dose of 400 mg every 8 h for 3 days. On day 4, blood and urine were collected at different time points and metronidazole levels were measured.

Validated high performance liquid chromatographic method for simultaneous determination of phenytoin, phenobarbital and carbamazepine in human serum.

A high performance liquid chromatographic (HPLC) method for the simultaneous determination of phenytoin (CAS 57-41-0), phenobarbital (CAS 50-06-6, phenobarbitone) and carbamazepine (CAS 298-46-4) is described. The serum was extracted with ethyl acetate, the dried extract was reconstituted in mobile phase and the aliquot was injected. The eluent drugs were detected at 230 nm.