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MECHANISM CATEGORIES SAFETY Side effects Generally well-tolerated in trials at the doses tested Injection-site reactions Known interactions Not characterized in Phase 3 Contraindications Pregnancy/lactation (unstudied) REGULATORY STATUS FDA Not FDA-approved as a drug

Is it water-soluble

Over time, low B12 can also impact the appearance and health of your skinleading to dryness, hyperpigmentation, or delayed healing

They measure the molecule, not what's around it

But this would be only if you were at risk of some kind of serious heart problem or other emergency situation, rather than just having low hemoglobin levels