Vanadium

Tier 4 — risky / avoid · Insulin mimetic · Glucose metabolism

Vanadium is an ultra-trace element. Food already provides roughly 6–30 micrograms a day, and no human deficiency disease is established. The doses used in small diabetes experiments are milligrams of vanadyl sulfate, not micrograms, and those doses commonly cause stomach upset, a green tongue, and kidney stress. Better studied glucose tools exist. Do not supplement vanadium.

Dose: Do not supplement. Trace amounts in food are enough. The diabetes-trial doses (tens of milligrams of vanadyl sulfate) are not a safe self-experiment.