Chromium Ascorbate

Mineral

What is it

Chromium ascorbate is a form of trivalent chromium bound to ascorbic acid (vitamin C), used as a supplement for blood-sugar support. It is a less common form than chromium picolinate or chromium nicotinate.

Evidence for 1 use

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

Glycemic control in type 2 diabetes

Limited Evidence

Meta-analyses suggest modest reductions in fasting glucose and HbA1c with chromium supplementation in people with T2DM; effect sizes are small and inconsistent.

How it works

Trivalent chromium is thought to support insulin signaling through chromodulin, a low-molecular-weight chromium-binding peptide. Effects on glucose and insulin sensitivity in clinical trials are inconsistent; the strongest evidence is in people with type 2 diabetes or impaired glucose tolerance, where modest improvements have been reported. Different chromium forms have not been clearly distinguished in head-to-head trials.

Dosage

Adequate Intake for chromium is 25-35 mcg/day for adults. Supplements typically provide 200-500 mcg/day; an upper limit has not been established due to limited toxicity data on trivalent chromium.

When and how to take it

No strict timing requirement; daily intake supports steady status.

2 commercial forms

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

Chromium ascorbate

Ascorbate ligand may modestly improve absorption.

Bioavailability similar to other organic chromium forms.

Chromium picolinate

Reference comparison.

Most studied form.

Safety

Trivalent chromium is generally considered safe at supplement doses. Hexavalent chromium (a different valence state, not used in supplements) is toxic. Rare reports of kidney toxicity at very high chromium picolinate doses; chromium ascorbate specifically is less studied for adverse effects.

Who should be cautious

People with diabetes on medication should monitor glucose closely. Kidney disease: use lower doses or avoid. Pregnancy: insufficient data on supplement doses; basic AI levels are met with diet.

Interactions

Chromium may modestly enhance the effects of insulin and oral antidiabetic drugs; monitor blood glucose when starting.

Food sources

Broccoli, 1/2 cup

Amount
~11 mcg chromium
%DV
—

Whole grain bread, 1 slice

Amount
~2 mcg chromium
%DV
—

Frequently asked questions

Is chromium ascorbate better than chromium picolinate?⌄

No clear head-to-head evidence shows superiority. Both deliver trivalent chromium.

Do I need a chromium supplement?⌄

Most people meet the AI through diet. Supplementation may modestly help glycemic control in some people with diabetes.

References

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

Research on Chromium Ascorbate (PubMed search) — PubMed link

Track Chromium Ascorbate with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store
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.