There are provided pharmaceutical compositions for topical transdermal application for the treatment of male impotence and compositions for the treatment of asthma and of hypertension. The active ingredients of such compositions are selected from vasoactive intestinal peptide (VIP), effective derivatives thereof and effective fragments thereof. In the compositions for the treatment of male impotence a transdermally effective conjugate of VIP, its derivatives or fragments coupled to a hydrophobic moiety, is used.
展开▼