AIIMS PG Entrance May 2015 – MCQ 10

Methacholine is an agonist at?
A. M1 receptor
B. M2 receptor
C. M3 receptor
D. M4 receptor

Please contribute to the discussion by helping us recall the correct format of the question and posting the answer with references.

2 Comments

loken thapa May 12, 2015

methacholine is a non selective agonist of muscarinic receptor, so ans should be all of the above
jay May 17, 2015

Methacholine is an M2 AGONIST. Ref: KDT 7th Ed pg 101 table 7.3

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