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Here are summaries from ten notable studies on its effects: Neuroprotection in Parkinsons Disease: Supplementation with nicotinamide riboside (NR), a precursor to NAD+, increased brain NAD+ levels and showed neuroprotective effects in Parkinsons disease models
The label says the product contains benzyl alcohol and aluminum
After having a B12 shot, a person should monitor for adverse symptoms and seek medical help if they experience: severe pain at the injection site mild diarrhea a swelling sensation in the body temporary itching of the skin In rare cases, a person may also be at risk of: pulmonary edema peripheral vascular thrombosis, which involves blood clots polycythemia vera, which is a type of blood cancer If anyone experiences difficulty breathing, hives, and swelling, they need emergency medical help
Vitamin B-12 deficiency is not super common in the U.S