Urispas - Flavoxate hydrochloride

Dicyclomine hydrochloride (Bentyl, others), flavoxate hydrochloride (Urispas, others), oxybutynin chloride (Ditropan, others), and tolterodine tartrate (Detrol) are tertiary amines and trospium chloride (Sanctura) is a quaternary amine all are used for their anfispasmodic properties. These agents appear to exert some nonspecific direct relaxant effect on smooth muscle. In therapeutic doses, they decrease spasm of the G1 tract, biliary tract, ureter, and uterus. 

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