How long should breastfeeding be interrupted after using amphetamines?

The recommended interruption of breastfeeding after using amphetamines is typically 24-36 hours. This time frame is based on the half-life of amphetamines and their presence in breast milk. Amphetamines can pass into breast milk, and while small amounts may be transferred, it's essential to ensure that enough time has elapsed for the maternal blood level of the drug to decrease sufficiently to minimize any potential effects on the infant.

The 24-36 hour range allows for the metabolization and clearance of the drug from the mother's system and subsequently from her milk. This is particularly important as the safety of the infant is paramount when considering breastfeeding after maternal drug use. Prolonged interruption beyond this time frame may not be necessary unless there are specific health concerns, and shorter times may not adequately eliminate the risk of exposure for the infant. Therefore, the rationale for the chosen time frame reflects a balance between the mother's need to minimize drug exposure to her child while also addressing the importance of continuing breastfeeding when it is safe to do so.