[Efficacy of diflucortolone valerate in the vasoconstriction tests].

The efficacy of a new topical corticosteroid, 6alpha,9-difluor-11beta-hylerate, Nerisona), as a 0.1% cream, ointment and fatty ointment was investigated in the vasoconstriction test in two series of studies after application to human skin in which hyperaemia had been experimentally induced. The diflucortolone valerate W/O emulsion proved to be 100 times more effective than fluocortolone in an identical base. In a further study diflucortolone valerate as well as in the three preparations was compared with nine known corticosteroids or their commercial preparations. In the comparison of the preparations only the cream with 0.05% betamethasone-17,21-dipropionate was superior to the diflucortolone valerate cream. As regards all the other preparations of formulations the new substance proved to be more or at least equally effective.