3 the percentage of the administered dose recovered as morphine was : ( a ) diamorphine hydrochloride by injection : 70 % ( s.d . 25 ) ( b ) diamorphine hydrochloride by mouth : 77 % ( s.d . 27 ) ( c ) morphine sulphate by mouth : 56 % ( s.d . 21 ) 4 it is suggested that diamorphine hydrochloride is completely absorbed by the gastro-intestinal tract but that morphine sulphate is only some two-thirds absorbed .
C0026549
morphine
C0066814
morphine sulphate