Chromium acetate

MineralBest with a meal

What is it

Chromium acetate is a chromium(III) salt of acetic acid used as a source of dietary chromium in some supplements. Trivalent chromium is the nutritionally relevant form.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Glycemic control in diabetes

Mixed Evidence

Trials of chromium for type 2 diabetes have shown mixed results. Meta-analyses suggest modest reductions in HbA1c and fasting glucose, but effects are inconsistent and clinical significance is unclear.

How it works

Trivalent chromium (Cr3+) is hypothesized to enhance insulin action by binding to chromodulin (low-molecular-weight chromium-binding substance), which then potentiates insulin receptor signaling. However, the essentiality of chromium for human nutrition is debated; the IOM downgraded chromium from an essential nutrient to an Adequate Intake (AI) value in 2001. Absorption of chromium from chromium acetate is similar to other chromium(III) salts (approximately 0.5-2%), considerably lower than chromium picolinate or organic chromium complexes.

Dosage

Adequate Intake (AI) for chromium: 25 mcg/day (women 19-50), 35 mcg/day (men 19-50). No UL has been established. Supplement doses commonly range from 100-1000 mcg elemental chromium.

When and how to take it

WHEN: Can be taken with meals to support insulin sensitivity at mealtimes. HOW: Take with vitamin C-containing foods to slightly enhance absorption. Avoid taking with antacids.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Chromium acetate

Less commonly used than picolinate or polynicotinate forms.

Similar to other chromium(III) salts (~1%)

Chromium picolinate

Most studied form.

Generally considered most bioavailable

Safety

Trivalent chromium has low toxicity. No UL has been set but adverse effects (kidney issues, GI upset) have been reported at very high doses. Trivalent chromium should not be confused with hexavalent chromium (Cr6+), which is a known carcinogen but is not present in supplements.

Who should be cautious

People with diabetes should monitor blood glucose closely if taking chromium supplements. Those with kidney or liver disease should consult a clinician. Pregnant and lactating women should not exceed AI of 30 mcg/day from food and supplements combined.

Interactions

Chromium may enhance the glucose-lowering effects of insulin and oral diabetes medications. May interact with NSAIDs (increased absorption), antacids and proton pump inhibitors (decreased absorption), and corticosteroids.

Food sources

Broccoli

Amount
1/2 cup = 11 mcg
%DV
31%

Grape juice

Amount
1 cup = 8 mcg
%DV
23%

Whole wheat

Amount
1 slice = 1 mcg
%DV
3%

Frequently asked questions

Do I need to supplement chromium?⌄

Most people get adequate chromium from a varied diet. The essentiality of chromium for human nutrition is debated, and routine supplementation is not generally recommended.

Is chromium acetate safe?⌄

Trivalent chromium from supplements is considered low-toxicity. It is distinct from the toxic hexavalent chromium found in industrial settings.

References

Chromium acetate on Wikidata — Wikidata link

Chromium acetate on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Chromium acetate (PubMed search) — PubMed link

Track Chromium acetate with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.