A large family of drugs derived from phenothiazine, a compound that in itself is too poisonous for human consumption

Phenothiazine derivatives include tranquilizers, medications that prevent vomiting, antihistamines, and drugs used to enhance the effectiveness of anesthesia

None of the phenothiazine class of drugs show up in general serum or urine drug tests (although they can be ordered, specifically).

Gordon Scott Porter has written:

'The polargraphic determination of microgramme quantities of some phenothiazine and benzodiazepine tranquillizers'

I recently was given a drug called torodol and had some reactions similar to ones I had when given compazine which is a phenothiazine and wondered if toradol were in that family of drugs as well?