Do B12 gummies really boost energy and cognitive function

Contradicted by strong evidence

What we can confirm

Authoritative health sources consistently report that vitamin B12 supplements, including gummies, only improve energy, concentration, and cognitive function in people who are deficient in B12, not in the general population with normal levels. In non‑deficient individuals, clinical research has found no evidence that extra B12 provides an energy boost or cognitive enhancement beyond correcting a deficiency, and any perceived benefits are typically placebo or due to addressing underlying deficiency rather than a pharmacologic “boost.”

Sources

Checked July 25, 2026