 <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]  a vein as directed by your doctor, usually once or twice daily. It is injected slowly into a vein over 30 minutes. If you are using this medication at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely. The dosage and length of treatment are based on your medical condition, weight, and response to treatment. It is very important to keep using this medication (and other medications used to treat tuberculosis) exactly as prescribed by your doctor. Do not skip any doses. For the best effect, use this antibiotic at evenly spaced times. To help you remember, use this medication at the same time(s) every day. Continue to use this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection. Tell your doctor if your condition lasts or gets worse.The side effects of Rifadin Intravenous: Upset stomach, heartburn, nausea, or headache may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. </s>