Fertility regulation in nursing women: III. Short-term influence of a low-dose combined oral contraceptive upon lactation and infant growth

S. Díaz, O. Peralta, G. Juez, C. Herreros, M. E. Casado, A. M. Salvatierra, P. Miranda, E. Durán, H. B. Croxatto

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

The study was designed to test the short-term influence of a low-dose combined oral contraceptive upon lactation and infant growth when treatment was initiated at day 30 postpartum. The contraceptive tested contained ethinyl estradiol 0.03 mg and levonorgestrel 0.15 mg. Two control groups were formed by women who received either an oral placebo or an injectable placebo at day 30 postpartum. An exacting list of requirements for admission and continuation in the study was applied to all groups. The oral contraceptive group had a lower percentage of cases in exclusive breast-feeding at day 91 postpartum when compared to both control groups. Infants in the oral contraceptive group showed a significantly lower average absolute weight at days 61 and 91 postpartum and a significantly lower average daily weight increase during the first month of treatment when compared to both control groups. It was concluded that the oral contraceptive tested had a negative influence upon lactation and child growth.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalContraception
Volume27
Issue number1
DOIs
Publication statusPublished - 1 Jan 1983

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology

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