A THERAPEUTIC CLASSIFICATION OF USEFUL DRUGS Drugs Used to Strengthen the Heart Drugs Used to Contract the Blood-vessels: Vasoconstrictors. Drugs Used to Dilate the Blood-vessels: Vasodilators DRUGS USED FOR ACTION ON THE CENTRAL NERVOUS SYSTEM Drugs Used to Stimulate the Brain and Spinal Cord Drugs Used to Depress the Brain and Spinal Cord . Drugs Used to Cause Sleep: Hypnotics . |