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Lactation and Genital Involution Effects of a New Low-dose Oral Contraceptive on Breast-feeding Mothers and their Infants

From the Department of Obstetrics and Gynecology, University of Iowa, Iowa City, Iowa 52240

Abstract

The effects of administration of norethindrone 1 mg with mestranol 0.08 mg to 50 nursing mothers are described. The effect on lactation was inhibitory when compared to controls, demonstrated by lower infant weight gains in spite of an increase in supplemental calories given to the infants. The duration of lactation was decreased significantly when compared to 50 controls. This effect was more pronounced in primiparas when compared to those with previous lactation success. The medication had no obvious effect on involution of infant breast tissue. No deleterious effect on maternal genital involution was noted.

This article has been cited by other articles:

				J. J. Kelsey Hormonal Contraception and Lactation J Hum Lact, December 1, 1996; 12(4): 315 - 318. [PDF]