Cyserin 250mg Capsule is an antibiotic medicine used to treat drug-resistant tuberculosis. It is generally used in combination with other medicines. This medicine is used when the bacteria have developed resistance to other antibiotics. Cyserin 250mg Capsule may be taken with or without food. You should take it regularly at evenly spaced intervals as per the dose and schedule prescribed by your doctor. Taking it at the same time every day will help you to remember to take it. You should always complete a full course of this antibiotic as prescribed by your doctor. Do not stop taking it until you have finished, even when you feel better. If you stop taking it early, some bacteria may survive and the infection may come back. The most common side effects of this medicine include memory loss, confusion, insomnia (difficulty sleeping), and dizziness. Inform your doctor if you experience skin rashes, tremors, fits, problems with speech or movement, depression, or other changes in mood, thoughts, or behavior. Before using it, you should tell your doctor if you are allergic to any antibiotics or have any kidney or liver problems. Pregnant and breastfeeding mothers should not take this medicine. Your doctor may get regular blood and urine tests while undergoing treatment with this medicine.