Methacholine Chloride

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Organic Chemical

**Definition:** The chloride salt form of methacholine, a direct-acting cholinergic muscarinic agonist with bronchoconstrictive, miotic, vasodilator, and cardiac vagomimetic activity. Methacholine chloride acts directly on the muscarinic receptors in the heart, eye, and lung, thereby producing parasympathomimetic effects.

**Synonyms:** - 1-Propanaminium, 2-(acetyloxy)-N,N,N-trimethyl-, Chloride - Amechol - Ammonium,(2-hydroxypropyl)trimethyl-, Chloride, Acetate - METHACHOLINE CHLORIDE - Provocholine