The desirability quotient or DQ for methapyrilene is low. Â
Methapyrilene refers to an anticholinergic and antihistamine of the pyridine chemical category that was formulated in the initial 1950s. It was traded under the names Histadyl EC and Co-Pyronil. Â
It exhibits comparatively strong sedative influences, to the degree that its main application was as a medicine for insomnia in spite of its antihistamine activity. Â