The Safety of Mother's Milk® Tea: Results of a Randomized Double-Blind, Controlled Study in Fully Breastfeeding Mothers and Their Infants.

Background: Various natural products are reported to improve maternal milk supply yet are not necessarily safe for infants. Researchers have not systematically studied galactagogue teas for safety.

Research Aim: This study evaluates the safety of a galactagogue tea in breastfeeding women and their infants, assessing short- and long-term adverse effects.

Methods: Healthy, exclusively/fully breastfeeding women ( N = 60) with no milk insufficiency were randomized into (1) an all-natural tea containing fruits of bitter fennel, anise, and coriander; fenugreek seed; and other herbs (Mother's Milk herbal tea; test) group or (2) a lemon verbena leaf (placebo) group. Maternal diaries captured self-reported maternal and infant adverse effects, tea consumed, and perceived infant satisfaction. Maternal quality of life and psychological state were assessed at baseline and 2 and 4 weeks. Poststudy calls assessed adverse effects through the infants' age of 12 months.

Results: No adverse effects attributable to the interventions were reported at any time point. No differences were found between test and placebo groups in sociodemographic characteristics, maternal or infant adverse symptoms, quality of life, breastfeeding self-efficacy, maternal psychological measures, infant growth, and infant satisfaction (all p >.05).

Conclusions: This double-blind, randomized controlled trial (RCT) of an herbal galactagogue versus placebo among healthy, exclusively/fully breastfeeding mothers and infants found no adverse events associated with the test tea across the 30-day study or the first year of their infant's life. This composite tea appears to present no safety risk for mothers or their young babies.