Milnacipran active enantiomer. Serotonin and Norepinephrine selective re-uptake inhibitor antidepressant drug. Frequent and potential severe side effects have been found. Latest update failed to find relevant data on breastfeeding. Pharmacokinetic data (low serum protein binding and high bioavailability) indicates that drug excretion into breast milk in significant amount is highly probable. Absorption by the infant is likely to be high as well. A known alternative would be preferred until more information on the drug is available.