Drugs Home > Afinitor and Breastfeeding

Afinitor (everolimus) is not recommended for use in women who are nursing, as it is unknown whether the medicine passes through human breast milk or if it would harm a nursing infant. This drug is known to pass through the breast milk of rats in high amounts. Due to the potential risks to a nursing infant, the manufacturer recommends that breastfeeding women avoid Afinitor.

Can Breastfeeding Women Take Afinitor?

Afinitor® (everolimus) is a prescription medication used in the treatment of certain cancers of the kidney, pancreas, or breast. It is also approved to treat certain types of brain and kidney tumors in people with a rare condition known as tuberous sclerosis.
At this time, it is unknown whether this medicine passes through breast milk in humans. The manufacturer recommends that women taking Afinitor avoid breastfeeding. Therefore, if you are breastfeeding, talk with your healthcare provider before taking this drug.

More Information on Afinitor and Breastfeeding

No studies have been done to see if Afinitor passes through breast milk in humans. In animal studies, the drug was shown to pass through the breast milk of rats. The amount found in the rat breast milk was higher than the amount found in the bloodstream of the mother rats. Because of the potential for serious side effects in a nursing child, the manufacturer suggests that breastfeeding women avoid Afinitor.

Talking With Your Healthcare Provider

You should discuss breastfeeding and Afinitor use with your healthcare provider. Each woman's situation is different, and you and your healthcare provider understand your situation best. After considering what you want and expect, as well as your current health situation, the two of you can make a shared decision that is right for you.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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