⚠️CautionCurated
DayQuil
DayQuil contains acetaminophen (safe) and dextromethorphan (safe), but also pseudoephedrine or phenylephrine as a decongestant, which raises supply concerns.
DayQuil Severe contains pseudoephedrine, which can reduce milk supply by ~25% with a single dose. Standard DayQuil contains phenylephrine, which is less concerning but still worth monitoring. As with NyQuil, treating symptoms individually with single-ingredient products gives you better control. Use plain acetaminophen for pain and guaifenesin for mucus.
Safer Alternatives:
Always confirm with your doctor or lactation consultant before making dietary changes while breastfeeding.
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