<unk>  (discontinued preparation: Yutopar) is a tocolytic drug, used to stop premature labor.  This drug has been removed from the US market, according to FDA Orange Book. It was available in oral tablets or as an injection and was typically used as the hydrochloride salt,<unk>  hydrochloride.
Ritodrine
Etilefrine
Midodrine
Dimetofrine
Oxyfedrine
Minaprine
Chloroxylenol
Gepefrine