<unk> (injection) is an antiemetic that is FDA approved for the treatment of postoperative nausea and vomiting and for nausea associated with gastroenteritis.   Common adverse reactions include hypotension, anticholinergic reactions, and somnolence.
Trimethobenzamide 
Tosylchloramide
Phenindamine
Isopropamide
Methenamine
Chlorphenamine
Diethyltoluamide
Tramazoline