Twenty patients with systemic scleroderma (SSD) and Raynaud's syndrome (RS) received 30-80 mg of corinfar, a blocker of calcium channels, during 14 days. Seventeen patients responded to the treatment. The clinical effect was manifested by a decrease in the rate, duration and intensity of RS attacks. Side effects were recorded in 6 patients, but the drug was discontinued only in 2 patients because of the allergic reactions. During treatment, the patients showed an increase in tissue blood flow parameters. Corinfar may be regarded a drug of choice in the treatment of marked RS in SSD.