Charcoal and Rifampicin Pharmacokinetics.

We investigated the effect of activated charcoal on rifampicin disposition in six healthy subjects. On three occasions (control, phases II and III, separated by 1 week), each subject received 600 mg of rifampicin with 350 ml of water. On the second and third occasions (phases II and III), each subject received in addition to 600 mg of rifampicin and 7.