A new medicament composition contains, in addition to an active agent (A) and conventional additives and diluents, at least one di-hepta-glycerol 1 or 2-monoether derivative (I). A new medicament composition contains, in addition to an active agent (A) and conventional additives and diluents, at least one oligo-glycerol derivative of formula (I). R1, R2 = H or T; T = alkyl, alkenyl, alkynyl or alkoyl of 1-22C; x = 1-6. Provided that one of R1 and R2 is H and the other is T.