vasotonic

Adjective

 * 1) Affecting the tone of vessels (almost always with reference to blood vessels); that is, affecting the muscle tone of the smooth muscle in the walls of blood vessels, thus influencing blood flow within the lumen.

Related terms

 * See vasoactive § Related terms

Noun

 * 1) A substance (especially a drug) that is vasotonic, usually with reference to a drug that modifies the tone of vessel walls, such as a vasopressor or a phlebotonic.