Hi, Minoz 50 mg tablet contains minocycline which is an antibiotic medication used to treat bacterial infections and acne causing bacteria. It is effective in some infections of the lungs, urinary tract infection, infection of the eyes and others. It kills bacteria which helps to improve symptoms and cure the infection. It usually takes a few weeks to have a noticeable effect so keep using it even if it appears not to be working. Sometimes, acne may get worse before they get better. However, with proper use, your skin will get clearer in time. The earlier you start using it, the lesser the chances of you getting scars. Side effects of Minoz are nausea, vomiting, headache, skin reaction on exposure to sunlight, dizziness, diarrhea, abdominal pain, GIT upset, unsteadiness, spinning sensation, loss of appetite, allergic reactions etc. These side effects are reversible within 3-48 hours of stopping therapy and occurred less often with low doses. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General & Family Physician