Available in injectable and capsule form, rifampin (Rifadin®) is prescribed to treat tuberculosis or to get rid of a type of bacteria called Neisseria meningitides. Rifampin capsules are typically taken once or twice daily, while the injection is usually given through a needle inserted into a vein (an intravenous, or IV, injection).
The capsules should be taken on an empty stomach, at least one hour before or two hours after a meal. Your specific dosage will depend on a number of factors, such as your weight, the reason you are using this medicine, and how you respond to it. Be careful not to miss doses, as it may increase your risk of the infection coming back and cause your infection to be resistant to rifampin or other antibiotics.
(For more information, click Rifampin. This full-length article examines various topics, including how this drug works and potential side effects.)