Rifampin Dosage

General Information on Using This Medication

Some considerations to keep in mind during treatment with rifampin include the following:
  • Rifampin comes in capsule and injectable forms. The capsule is normally taken by mouth once or twice a day. The injection is normally given through a needle inserted into a vein (an intravenous, or IV, injection).
  • You should take rifampin capsules on an empty stomach, with a full glass of water, one hour before or two hours after a meal.
  • The medication can be made into a liquid suspension for people who have difficulty swallowing the capsules, such as children. Ask your healthcare provider or pharmacist if you are interested in this option.
  • Rifampin liquid suspension must be shaken well before use.
  • For the medication to work properly, it must be used as prescribed. Missing doses or not completing the full course of treatment will increase the chance that your infection will not resolve and that the bacteria causing your infection will become resistant to rifampin or other antibiotics.
  • If you are unsure about anything related to your rifampin dosage, please talk with your healthcare provider, nurse, or pharmacist.

Rifampin Antibiotic Information

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