Treating tuberculosis (TB) of the lungs.

Rifater is a combination of 3 antibacterial agents. It works by killing sensitive TB bacteria.

Contact your doctor right away if you develop unusual fatigue, weakness or fever that lasts longer than 3 days, general feeling of discomfort, loss of appetite, nausea, vomiting, numbness or tingling of the hands or feet, dark urine, yellowing of the skin or eyes, or stomach pain or tenderness.

Patients with active liver problems should not use Rifater.

Diarrhea; dizziness; drowsiness; gas; headache; heartburn; mild joint or muscle aches; mild stomach upset or cramps; nausea; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); bloody or dark urine, change in the amount of urine produced; changes in vision; chest pain; coughing up blood; dark, tarry, or bloody stools; fever, chills, or sore throat; general feeling of discomfort; increased thirst or urination; irregular heartbeat; joint pain or swelling; loss of appetite; memory problems; menstrual changes; mental or mood changes; red, swollen, blistered, or peeling skin; ringing in the ears; seizures; severe diarrhea, nausea, or stomach cramps; severe or persistent muscle pain or weakness; severe pain or tenderness in the big toe; shortness of breath; stomach pain or tenderness; swelling of the hands or legs; swollen lymph nodes; symptoms of low B6 levels (eg, confusion, cracks in the corners of the mouth, irritability, mouth redness or soreness, scaly rash); tingling or numbness in the hands or feet; unusual bruising or bleeding; unusual tiredness or weakness; vomiting; yellowing of the skin or eyes.