Is Hydrocortisone safe while breastfeeding?

Effects on the breastfed infant

None have been reported with any systemic corticosteroid.

Effects on milk supply

Published information on the effects of hydrocortisone on serum prolactin or on lactation in nursing mothers was not found as of the revision date. Medium to large doses of corticosteroids given systemically or injected into joints or the breast have been reported to cause temporary reduction of lactation.[ 21 - 25 ] A study of 46 women who delivered an infant before 34 weeks of gestation found that a course of another corticosteroid (betamethasone, 2 intramuscular injections of 11.4 mg of betamethasone 24 hours apart) given between 3 and 9 days before delivery resulted in delayed lactogenesis II and lower average milk volumes during the 10 days after delivery. Milk volume was not affected if the infant was delivered less than 3 days or more than 10 days after the mother received the corticosteroid.[ 26 ] An equivalent dosage regimen of hydrocortisone might have the same effect. A study of 87 pregnant women found that betamethasone given as above during pregnancy caused a premature stimulation of lactose secretion during pregnancy. Although the increase was statistically significant, the clinical importance appears to be minimal.[ 27 ] An equivalent dosage regimen of hydrocortisone might have the same effect.

Levels in milk

Numerous methods have been used to measure cortisol in milk. Some have measured only unconjugated cortisol, and others have hydrolyzed sulfate and glucuronide conjugates to measure total cortisol. Neonates are unable to deconjugate these moieties, so the age of the infant affects the relevance of findings.[ 15 ] Maternal Levels. Cortisol was measured in the colostrum and milk of 11 women monthly for up to 12 months postpartum. Levels in late pregnancy averaged 24.5 mcg/L and fell over the first 10 days postpartum to an average of 1.8 mcg/L. Milk cortisol levels between months 2 and 12 averaged 7.2 mcg/L, but varied with time and among individuals (range 0.2 to 32 mcg/L).[ 16 ] Free cortisol was measured in 13 women on days 1, 2, and 3 postpartum (7 spontaneous births) or days 3, 4, and 5 postpartum (6 elective cesarean sections). Milk levels were measured before and after nursing, but the values were not statistically different. In the women with spontaneous deliveries, before and after milk levels averaged 17.2 mcg/L on day 1, 16.8 mcg/L on day 2, and 7.4 mcg/L on day 3 postpartum. In the women with cesarean deliveries, before and after milk levels averaged 26.5 mcg/L on day 3, 15.1 mcg/L on day 4, and 14.1 mcg/L on day 6 postpartum.[ 17 ] Thirteen full-term mothers donated milk between 8 and 28 weeks postpartum. Unconjugated cortisol concentrations ranged from 1.45 to 8.34 mcg/L.[ 15 ] A study compared 10 mothers who delivered preterm ( 32 week) infants to 10 who delivered at 37 weeks or greater. Breastmilk cortisol concentrations were 50% lower in mothers of preterm infants in the first week postpartum, although the difference was not statistically significant.[ 3 ] A study of 23 mothers found that the average cortisol concentration in breastmilk was 1.6 mcg/L over 24 hours. Concentrations were highest in the morning between 4:00 am and 10:00 am and lowest in the evening between 4:00 pm to 10:00 pm.[ 2 ] Cortisol was measured in the breastmilk of 22 women who del

Alternatives LactMed lists

• Prednisolone
• Prednisone