Question: is mepyramine an antagonist of histamine and acetylcholine?
Answer: Mepyramine: It is a histamine H1 antagonist and targets the H1- Receptor. ... Atropine: It is a competitive antagonist for the muscarinic cholinergic receptor (mAch). It binds to the receptor without activating it, thus blocking the actions of endogenous acetylcholine or exogenous agonists.