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giving b12 injection in arm What happens if you inject wrong? B12 SHOTS - YouTube
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Research has confirmed no significant effects on serum IGF-1 levels, no negative effect on carbohydrate metabolism, and no immunogenicity with no anti-AOD-9604 antibodies detected in any participants

It May Affect the DNA Process : Low vitamin B12 in pregnancy can negatively impact the DNA synthesis process for the unborn baby
Lose 14-15% of your body weight* *In clinical trials of Wegovy (FDA-approved semaglutide), participants achieved an average weight loss of approximately 15% over 68 weeks, with some participants achieving up to 20% with continued treatment and adherence, when combined with diet and exercise

Metformin has also been shown to inhibit the calcium-dependent absorption of the vitamin B12IF complex at the terminal ileum