R-Cinex (isoniazid/rifampin) is an antibiotic prescribed to treat patients who are suffering from tuberculosis. It is typically prescribed to be administered once each day for a set cycle of treatment at the indicated dosage. Your individual regimen will be determined based on the severity of your symptoms, current health condition, and response to previous treatments. Never deviate from these instructions as misuse of this medicine can lead to serious and unexpected health problems. Food interferes with the absorption of rifampicin component of R – Cinex, that may cause failure of treatment and development of drug resistant bacteria. That’s why it is taken empty stomach to increase absorption of rifampicin. As you have taken one or two doses along with tea or juice, it won’t affect your regimen. There is no need to restart the regimen. But be careful in future. Swallow your daily dose on an empty stomach along with a full glass of water. To ensure the correct usage, try to take the tablets one hour before eating or two hours after a meal. You are also suggested to take the doses at the same time each day to get the most efficient results by keeping a consistent level of medicine in the system at all times. Never stop taking the medicine before instructed to do so, even if your symptoms appear to be cured. Consult your physician regularly while undergoing treatment to make sure you are getting the correct effects. Thanks!!