Wiktionary
pitofenone
n. An antispasmodic drug.
Wikipedia
Pitofenone
Pitofenone is an antispasmodic. It is used in Spasmalgon, a Bulgarian drug which is combination of pitofenone hydrochloride, fenpiverinium bromide, and metamisol sodium. Spasmalgon relieves pain and spasms of smooth muscles.