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Description
Benefits and What to Expect Vitamin B12 injection benefits are tied to correcting a confirmed or strongly suspected deficiency

J Clin Invest 2002

The Phase 2 clinical trial showed roughly 2-3 kg more fat loss than placebo over 12 weeks, with no impact on blood sugar, insulin, IGF-1, or any hormonal marker

If fatigue persists or worsens over time, checking B12 levels, thyroid function, and other nutritional markers is warranted
