Actavis UK markets Promethazine hydrochloride under the Sominex brand. Actavis also markets Sominex Herbal as a herbal sleep aid with three active ingredients: Hops , Valerian , and Passion Flower extracts . Read more... Edit at Wikipedia... Other names 2-(Diphenylmethoxy)-N,N-dimethylethanamine (IUPAC Name); 2-Diphenylmethoxy-N,N-dimethylethanamine; alpha-(2-Dimethylaminoethoxy)diphenylmethane; beta-Dimethylaminoethyl Benzhydryl Ether; Dibendrin; Diphenhydramine Base; DPH;