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labs looks like this: Normal range: 200 to 900 pg/mL (some labs use 160 to 950 pg/mL) Optimal range: 400 to 600 pg/mL Elevated: above 900 to 1,000 pg/mL (hypercobalaminemia) These ranges come from sources including UCSF Health and WebMD, though your labs specific cutoffs may differ

This placebo controlled study in 24 elderly individuals showed that a single dose of an NAD+ booster before exercise improved fatigue index, physical recovery and muscle function

Boost Your Energy Levels Naturally Low energy is one of the most common signs of a B12 deficiency

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