Daily dose of four first therapeutic days is 50 mg, 100 mg (second day), 200 mg (third day), 300 mg (fourth day). Starting from the fourth day the dosage should be adjusted to the level of effective one (which can reach 750 mg daily). In patients with liver or kidney failure initial dose is 25 mg/day increased gradually by 25-50 mg till the effective dose is reached.

Daily dose of four first therapeutic days is 50 mg, 100 mg (second day), 200 mg (third day), 300 mg (fourth day). Starting from the fourth day the dosage should be adjusted to the level of effective one (which can reach 750 mg daily). In patients with liver or kidney failure initial dose is 25 mg/day increased gradually by 25-50 mg till the effective dose is reached.