Metronidazole 200 mg tablet is indicated for the treatment of various bacterial and protozoal infections, contraindicated in patients with a history of hypersensitivity to metronidazole or other nitroimidazole derivatives, may cause side effects such as nausea, headache, dizziness, and a metallic taste, and can interact with alcohol, leading to disulfiram-like reactions, as well as with anticoagulants, increasing their effects.