<unk>  (INN, USAN) (trade name Provocholine), also known as Acetyl-β-methylcholine, is a synthetic choline ester that acts as a non-selective muscarinic receptor agonist in the parasympathetic nervous system.
Methacholine
Bromethalin
Theobromine
Dicycloverine
Glycopyrronium bromide
Allergan
Acetyl chloride
Guaifenesin