Clonazepam (Klonopin) is used to treat panic disorder and seizures. Learn about side Maximum dose: 20 mg per day, taken in divided doses. Child dosage. Maximum plasma concentrations of clonazepam are reached within 1 to 4 At endpoint, 74% of patients receiving clonazepam 1 mg/day were free of full panic Panic Disorder: Klonopin is indicated for the treatment of panic disorder, with or. hey all, wondering what the max dose of klonopin is per day and how much is the max at night for sleep issues due to anxiety? take 3mg a day Is 4mg of klonopin considered a low or high dose.