can you inject vitamin b12 yourself How to Self-Inject at Home How To Self-Inject B12 -

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Vitamin B12 also plays a critical role in red blood cell production

Studies looking at NR doses up to 2,000mg per day and NMN doses up to 1,200mg per day found no differences in adverse effects between intervention and placebo groups.31 4 In studies of higher doses that produced adverse effects, typical reactions included:32 Headache Dry mouth GI upset Muscle cramps or spasms As with many forms of vitamin B, NR can cause some flushing, and both NR and NMN can cause digestive upset

If your symptoms persist despite corrected blood levels, that signals the need for a closer reviewand possibly a shift to the active form