Glycogen contents in the rat uterus: response to Hibiscus rosa-sinensis Linn. extracts.

Ethanolic extracts (50%), as well the benzene extracts, of H. rosa-sinensis Linn. have reduced significantly the glycogen contents in the uterus of adult rat. Both the extracts exhibit a clear-cut dose-response relation. The inhibition in glycogen contents increases as the dose is increased. Of the 2, benzene extract seems to be more potent. The results are due to antiestrogenic nature of the extracts.