Codeine Phosphate Hemihydrate, Hydrocodone Hydrogen Tartrate 2.5-Hydrate Imp. C (EP) as Phosphate Hemihydrate, Dihydrocodeine Hydrogen Tartrate Imp. A (EP) as Phosphate Hemihydrate, Ethylmorphine Hydrochloride Imp. C (EP) as Phosphate Hemihydrate, Pholcodine Imp. B (EP) as Phosphate Hemihydrate, Morphine Sulphate Imp. A (EP) as Phosphate Hemihydrate, Morphine Hydrochloride Imp. A (EP) as Phosphate Hemihydrate