| abstract |
The invention relates to a pharmaceutical composition for the treatment of psoriasis and other skin diseases. The inventive composition comprises 17-clobetasol propionate and a hydroxy derivative of progesterone having formula (I) wherein: R6 denotes H or methyl; R11 denotes H or hydroxyl; and R17 denotes H or hydroxyl, but R11 and R17 cannot be H simultaneously. Preferably, said composition is administered as a lotion with: 0.05-0.2 % 17-clobetasol propionate; 0.3-1 % of (I); a solvent selected from among ethanol, isopropanol and mixtures thereof; 40 % cosolvent selected from among propylene glycol, glycerine, sorbitol and mixtures thereof; and 20 % water. In the ideal lotion, the solvent is ethanol and the cosolvents are approximately: 35 % propylene glycol, 5 % glycerine and 20 % water. The invention affords the following advantages: longer interval between recurrences and fewer local secondary effects. Moreover, the inventive composition can be used for the treatment of psoriasis. |