| challenge diet | A diet in which one or more specific substances are included for the purpose of determining whether an abnormal reaction occurs. (05 Mar 2000) |
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| methacholine chloride | <chemical> A slowly hydrolyzed muscarinic agonist. It is used as a parasympathomimetic bronchoconstrictor agent and as a diagnostic aid for bronchial asthma. It has also been used in the treatment of glaucoma and in the treatment of raynaud's syndrome and other vasospastic conditions. Pharmacological action: bronchoconstrictor agent, miotics, muscarinic agonist, parasympathomimetic. Chemical name: 1-Propanaminium, 2-(acetyloxy)-N,N,N-trimethyl- (12 Dec 1998) |
| methacholine compounds | A group of compounds that are derivatives of beta-methylacetylcholine (methacholine). (12 Dec 1998) |