[Rifampicin preparations for internal use and their bioavailability]

Bioavailability of rifampicin in 150 mg capsules manufactured by 5 different companies was studied. Conditions for investigation of the rate of the antibiotic transfer into solution with the use of the "Rotating Basket" apparatus were determined and statistically significant differences were found. The drugs also differed in the level and rate of antibiotic absorption into the blood of humans.