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Those pregnant, breastfeeding, or undergoing cancer treatment should avoid it until more data becomes available
The absence of adverse events in 12-week trials doesn't guarantee the same outcome at 24 weeks
Collectively, they are useful for repairing nerve damage
pregnant women often receive IV thiamine if needed (e.g., for hyperemesis) without issue
It works by blocking an enzyme called NNMT (nicotinamide N-methyltransferase)
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