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B12 isn't a weight-loss medication
[2] Exposure to nitrous oxide (including recreational use) can cause functional B12 deficiency and worsen neurological manifestations
Many experts suggest methylcobalamin for better absorption and quicker results, which is great for weekly B12 shots
Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B
Here are the specifics for needle size selection for SC injections: Needle Gauge : 25-27 Gauge : For SC injections, a thinner needle is used
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