Safety of Mebendazole Use During Lactation: A Case Series Report

Introduction: Mebendazole is an effective drug widely used in the treatment of parasitic infections. Although theoretically considered as safe during lactation, no studies have evaluated its potential adverse effects in infants of breastfeeding mothers. Objectives: We aimed to evaluate the safety of mebendazole in infants of lactating women treated with the drug. Methods: Women referred for consultation regarding mebendazole use were invited to participate in the study. Overall 45 lactating women treated with various protocols of mebendazole were recruited in this case series study. Results: Regardless of the treatment protocol used (single or repeated doses) mebendazole was well tolerated and was not associated with any adverse effects in infants of lactating mothers. There was mild GI irritability in two treated women. Conclusion: This study provides first evidence in humans as to the safety of mebendazole in breastfeeding.