Double-blind controlled trial of progesterone vaginal cream treatment for cyclical mastodynia in women with benign breast disease.

Authors: Nappi C, Affinito P, Di Carlo C, Esposito G, Montemagno U.

Publication Year: 1992

Citation: J Endocrinol Invest 1992;15(11):801-6.

Eighty regularly menstruating women with mastodynia were studied to evaluate the clinical effectiveness of vaginally administered micronized progesterone. Subjects were randomly assigned to one of two groups, with all participating in a control cycle prior to treatment. One group received 4 grams of vaginal cream containing 2.5% natural progesterone for six cycles from day 19 to day 25 of the cycle. The other group was similarly treated with placebo. Both subjective reporting on a daily basis and clinical examination revealed a significant reduction in breast pain, defined as 50% reduction, in 64.9% of subjects receiving progesterone and 22.2% of subjects receiving placebo. Effects of breast nodularity were not significant. No side effects were detected.