What should I avoid while taking isoniazid and rifampin?
Do not wear contact lenses while taking isoniazid and rifampin. Rifampin may turn your tears, sweat, saliva, urine, feces, and contact lenses a red-orange color. This effect may be permanent on contact lenses. This medication may decrease the effectiveness of birth control pills. Talk to your doctor about using another form of birth control during treatment. Avoid alcohol while taking isoniazid and rifampin. Alcohol will increase the risk of damage to your liver during treatment with this medication. Use caution with the foods listed below. They can interact with isoniazid and rifampin and cause a reaction that includes a severe headache, large pupils, neck stiffness, nausea, vomiting, diarrhea, flushing, sweating, itching, irregular heartbeats, and chest. A reaction will not necessarily occur, but eat these foods with caution until you know if you will react to them. Call your doctor immediately if you experience any of these symptoms. Eat the following foods with caution: • cheeses,
