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  • Title: Effects of penetration enhancers on the in-vitro percutaneous absorption of progesterone.
    Author: Valenta C, Wedenig S.
    Journal: J Pharm Pharmacol; 1997 Oct; 49(10):955-9. PubMed ID: 9364402.
    Abstract:
    Because progesterone seems suitable for treatment of premenstrual syndrome, the influence of penetration enhancers such as propylene glycol, urea and laurocapram (Azone) on the percutaneous absorption of progesterone from carbopol hydroalcoholic gels and from poly(ethylene glycol) ointments has been investigated. Skin experiments were performed using excized abdominal rat and porcine skin. Addition of 10% laurocapram was found to be the most efficient enhancer for progesterone from carbopol hydroalcoholic gels, for both rat and porcine skin; the next most efficient enhancer was urea in poly(ethylene glycol) bases. This enhanced the diffusion rates 2.5 fold, compared with pure poly(ethylene glycol) alone. The results show that hydroalcoholic gels and poly(ethylene glycol) ointments are both suitable vehicles for progesterone and that premenstrual syndrome might be treated effectively by use of hydroalcoholic gels containing 10% laurocapram.
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