Hi, Pyzina 500 is an antibiotic used to treat tuberculosis. The common side effects of Pyzina 500 include nausea, vomiting, abdominal pain, loss of appetite, skin rash, itching, and joint pain. Rarely, it can cause liver damage, changes in blood cells, and nerve damage. Combutol 400 is also an antibiotic used to treat tuberculosis. The common side effects of Combutol 400 include nausea, vomiting, abdominal pain, loss of appetite, dizziness, headache, skin rash, itching, and joint pain. It can also cause changes in blood cells and liver damage. R-cinex is a combination of two antibiotics used to treat tuberculosis, including Rifampicin and Isoniazid. The common side effects of R-cinex include nausea, vomiting, abdominal pain, loss of appetite, headache, dizziness, skin rash, itching, and joint pain. It can also cause changes in blood cells, liver damage, and nerve damage. It is important to note that these medications can interact with other medications you may be taking, and they can have side effects that vary from person to person. It is recommended that you speak with your doctor about any concerns you may have about these medications and any side effects you experience while taking them. Additionally, it is important to follow your doctor s instructions carefully and to complete the full course of treatment to effectively treat tuberculosis. If you require a personalized response, kindly use the Ask A Doctor service and post a follow-up. Take care. Hope I have answered your question. Regards, Dr. Priyanka, General & Family Physician