Propranolol Breastfeeding Warnings Propranolol milk to maternal plasma ratios as high as 1.5 has been reported. While no adverse effects in the nursing infant have been reported, experts advise monitoring the infant for signs and symptoms of beta-blockade and to schedule feedings at least three hours after maternal propranolol administration. Safe During Breastfeeding: Propranolol passes into breast milk in high amounts. While no negative reports have been filed, it is suggested that breastfeeding mothers wait at least three hours after taking the medication to breastfeed. Who shouldn't take propranolol? Find out who shouldn't take propranolol, when extra monitoring may be needed and if it's safe in pregnancy or breastfeeding Propranolol And breastfeeding: Most beta-blockers such as propranolol appear in the milk of lactating woman. However, the drug is highly bound to proteins in the blood, and distribution levels are quite low. Consult your doctor before you take propranolol during pregnancy. Propranolol crosses the placenta, and it is due to this that it can cause neonatal adverse effects. A daily dose of 160mg or more can lead to serious problems. Lower levels are harmful too. Some studies also link propranolol with premature labor. I also used this medicine while exclusively breastfeeding these same 5 babies with no problem. I am currently pregnant again and if I begin to experience the same dizziness/rapid heartrate symptoms I will have no qualms asking for this medicine again. After using it for more than 20 years off and on, I feel it is a safe medication in low doses (40 mgs per day for me). I hope my experience is. Although propranolol does pass through breast milk, it does so in small amounts, which means that problems are unlikely to occur if you take this medicine while nursing. Is it safe to take propranolol while breastfeeding – Find out more explanation for : ‘Is it safe to take propranolol while breastfeeding’ only from this channel. Can I take Propranolol while breastfeeding? Because of the low levels of propranolol in breastmilk, amounts ingested by the infant are small and would not be expected to cause any adverse effects in breastfed infants. Propranolol Levels and Effects while Breastfeeding Summary of Use during Lactation Because of the low levels of propranolol in breastmilk, amounts ingested by the infant are small and would not be expected to cause any adverse effects in breastfed infants.