 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] The uses of Priftin Oral: This medication is used with other medications to treat active tuberculosis (TB) of the lungs. It may also be used with another medication (isoniazid) to prevent active TB infections in people who are infected with the bacteria (people with positive TB skin test). Rifapentine is known as a rifamycin antibiotic. It works by stopping the growth of bacteria.This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. How to use Priftin Read the Medication Guide provided by your pharmacist before you start taking rifapentine and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Take this medication by mouth with food as directed by your doctor, usually once or twice weekly. Taking this medication with food will help to decrease side effects such as stomach upset, nausea, and vomiting and also increase the absorption of this medication. The dosage is based on your weight, medical condition, and response to treatment. For the best effect, take this antibiotic at evenly spaced times. To help you remember, take it on the </s>