however , the new compounds like pirenzepine and telenzepine , which block specifically the so-called m1 receptors located in the ganglia of the myenteric plexus , may represent an alternative to the h2 blockers since they are virtually devoid of the untoward reactions typical for the old atropine-like compounds ( dry mouth , mydriasis , tachycardia , etc . )
C0004259
atropine
C0043352
dry mouth