Colloidal gold

Tier 4 — risky / avoid · No evidence · Pseudoscience

No known mechanism of action, no trial evidence, and gold has no biological role in the human body whatsoever. FDA does not recognize it as safe or effective for any medical purpose. Sometimes marketed with pseudoscientific claims about "cellular energy" or "detox." There is no reason to consume gold as a supplement. Save your money entirely.

Dose: AVOID — no evidence of benefit; unknown long-term safety