Fenoverine is a potent musculotropic, the anti-spasmodic agent that restores smooth muscle motility and relieves the distressing symptoms associated with irritable bowel syndrome (IBS) and primary dysmenorrhea. Fenoverine is a non-anticholinergic phenothiazine derivative that may also inhibit calcium channel currents. Fenoverine primarily affects the gastrointestinal tract, bile duct, and female genital organs. Fenoverine has been repeatedly implicated in the occurrence of rhabdomyolysis, a potentially fatal adverse effect, in France. Thes drug has been therefore unavailable in France since December 1995 but commonly used in the treatment of gastrointestinal spasmodic disorders in Taiwan.