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Relative bioavailability of two brands of ornidazole in twelve healthy volunteers.

AIM OF THE STUDY
To determine the bioequivalence of two marketed ornidazole formulations in healthy volunteers.


METHODOLOGY
A single dose relative bioavailability of Ornidazole 1.5 g (3 x 500 mg tablets) of test product (Giro, Panacea Biotec Ltd.) and that of standard reference (Dazolic, Sun Pharmaceutical Industries), was investigated in healthy adult males. A total of 12 subjects wee enrolled in the study and investigations consisted of two treatment phases separated by a washout period of seven days. Both treatment phases were of 12 hours durations each. Blood samples were collected at 0, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10 and 12 hours post-administration of assigned drug product. Appropriate fasting restrictions were employed during both the treatment phases. Drug assay was done using HPTLC method. The statistical significance of difference in pharmacokinetic parameters between preparations was tested using ANOVA.


RESULTS
The mean peak plasma concentration (Cmax) of 32.67 +/- 4.45 microg/ml was achieved at 1.54 +/- 0.81 hours following administration of test product as against mean Cmax of 31.55 +/- 5.04 microg/ml at 1.79 +/- 0.89 hours for reference standard. The area under time concentration curve (AUC(0-12)) hours was 261.67 +/- 77 microg/ml hours with reference standard and 265.41 +/- 30.82 microg/ml hours for test product.


CONCLUSION
There was no statistically significant difference between the two formulations and the two products