Modest evidence for glucose handling; true deficiency is uncommon.
What the evidence supports: glucose handling — effect sizes are small and inconsistent.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
Trial for a few months and stop if nothing changes.
People working on insulin sensitivity, with realistic expectations.
Other supplements:
Run your full list through the interaction check.