Ecstasy (MDMA) can stay in breast milk for up to 48 hours after use, though the exact duration depends on factors such as dosage, individual metabolism, and maternal health. Amphetamine drugs like MDMA tend to be found at higher levels in breast milk than in the bloodstream. Because of this, it is generally recommended that breastfeeding mothers either avoid using MDMA altogether or express and discard breast milk for at least 48 hours after consumption to prevent exposing the infant to the drug

. The half-life of MDMA is around 7 to 8 hours, but it can vary and sometimes extend beyond 30 hours depending on factors like urine pH. Waiting at least five half-lives (approximately 40 hours) before breastfeeding again is advised to minimize risk

. Exposure to MDMA through breast milk can pose significant health risks to the infant, including potential neurological and developmental harm, irritability, feeding problems, and sleep disturbances. Because infants have immature metabolic systems, they may not efficiently eliminate the drug metabolites

. In summary:

• MDMA can be detected in breast milk for up to 48 hours post-use.
• Breastfeeding mothers are advised to wait at least 48 hours after MDMA use before nursing.
• Expressing and discarding breast milk during this period is recommended to avoid infant exposure.
• Avoiding MDMA use while breastfeeding is the safest approach.

These guidelines are based on limited but consistent research and expert recommendations to protect infant health