An antihypotensive agent[1] is any medication that tends to raise reduced blood pressure.[2] Some antihypotensive drugs act as vasoconstrictors to increase total peripheral resistance and are also called vasopressors, other sensitize adrenoreceptors to catecholamines - glucocorticoids, and the third class increase cardiac output - dopamine, dobutamine. Herbal tonics are used in chronic hypotension conditions. If hypotension is due to loss of blood then preparations increasing volume of blood circulation - plasma-substituting solutions, colloid solutions, crystalloid solutions (salt solutions).[3]