Klonopin is the brand-name medication of the generic drug clonazepam, recommended to treat seizures Klonopin 1 mg decreases the abnormal and excessive activity of the nerve cells and calms the brain. It may be taken with or without food .take this medicine at the same time each day. Each Klonopin 2 mg tablet also contains croscarmellose sodium, magnesium stearate, colloidal silicon dioxide, microcrystalline cellulose, lactose monohydrate some added colorants.