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This is because injecting methylene blue near nerves can kill them
Older Adults: As we age, stomach acid production can decrease, making B12 absorption more challenging
This doesn't mean it's unsafe it means it hasn't gone through the specific regulatory pathway the FDA requires for approved drugs
Side effects of injectable B12 may include such gastrointestinal symptoms as nausea, vomiting, mild diarrhea, headache and dizziness, skin rash, and itching (presumably, related to skin rash)
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