If you think you might be pregnant, or if there’s a possibility of becoming pregnant during treatment, it’s crucial to inform your healthcare provider right away. The effects of Keytruda on breast milk are not clearly known, so we recommend not breastfeeding during treatment and for 4 months following your last dose of Keytruda. Discussing pregnancy and breastfeeding with your healthcare provider before starting Keytruda treatment is essential to ensure your safety and the best possible outcome of the treatment.
