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Chromium GTF (brewer's yeast form)
Insulin sensitivity · Glucose · Metabolic
Tier 2 — Promising
What it is
A biologically active form of chromium complexed with niacin and amino acids from brewer's yeast. A 2024 review found GTF chromium modestly reduces fasting blood sugar and improves insulin sensitivity in people with impaired glucose tolerance. Potentially more bioavailable than inorganic chromium picolinate.
Efficacy
3/5
Safety
4/5
Research
3/5
Onset
2/5
Cost
4/5
Drug-int.
3/5
Dose
200–400 mcg/day chromium GTF; may be more bioavailable than chromium picolinate in some studies
Time of day & tips
Take with meals to enhance absorption. Monitor blood sugar if on diabetes medication — chromium enhances insulin sensitivity. Picolinate form is a lower-cost alternative.
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