Used primarily in research settings to study cholinergic receptor activity, particularly muscarinic receptors. It has been investigated for its potential in treating symptoms related to dry mouth, especially in conditions like Sjögren's syndrome, due to its ability to stimulate salivary flow. The trans-isomer is of interest for its selectivity and potency in activating M1 and M3 receptor subtypes, which play key roles in exocrine gland secretion. Its application remains mostly experimental, aiding in the development of more targeted therapies for autonomic nervous system disorders.