⚠️CautionCurated
Venlafaxine (Effexor)
Venlafaxine (Effexor) transfers into breast milk in moderate amounts, and the active metabolite (desvenlafaxine) can reach measurable levels in infant blood. Most breastfed infants tolerate it without adverse effects, but monitoring is recommended. If starting an antidepressant while breastfeeding, sertraline or paroxetine have more safety data and lower infant exposure.
Venlafaxine and its active metabolite O-desmethylvenlafaxine (desvenlafaxine) are found in breast milk at a relative infant dose of 6–8%, which is higher than preferred SSRIs. Infant serum levels have been detectable in some studies, though clinical adverse effects are uncommon. Reported effects in exposed infants include rare cases of agitation, poor feeding, and sleep changes. The drug is not contraindicated during breastfeeding, but if you're choosing a new antidepressant, SSRIs like sertraline (Zoloft) have the best safety profile for nursing mothers.
Safer Alternatives:
Always confirm with your doctor or lactation consultant before making dietary changes while breastfeeding.
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