About Chromium

Trace mineral found in foods like broccoli, whole grains, and meat. Taken mostly for blood sugar and sometimes for weight loss.

Our Take

If my "User Experience" section didn't give it away, I am less than impressed with this supplement. And experts seem to share this sentiment. My research has not proven to excite me about this supplement, and the following should help you understand why:

In the 1990s, the US Federal Trade Commission (FTC) took action against companies claiming chromium picolinate promoted weight loss, finding no solid scientific basis for those claims.

The European Food Safety Authority concluded in 2014 that chromium requirements cannot be established, questioning whether it's even essential.

But of course it is still available, and if you think that the cost/reward ratio works for you, I'd love to hear about your experience.

Effectiveness Scores

Blood Sugar Support Type 2 diabetes: 6.0/10.
Chromium seems to help insulin do its job. It may make the parts of your cells that respond to insulin more active, so sugar moves out of your blood and into your cells more easily.
Why this rating: In people with type 2 diabetes, reviews find chromium lowers blood sugar and A1c, a three-month average of blood sugar, slightly. Whether that's enough to matter is unclear, and the studies disagree with each other a lot, with some larger trials finding no effect at all. People whose blood sugar was poorly controlled seemed more likely to respond. The American Diabetes Association doesn't recommend chromium, and the FDA calls any link between chromium and diabetes "highly uncertain." There's no evidence it helps blood sugar in people without diabetes. If you try it, do it alongside your diabetes care, and tell your doctor.
Weight Loss: 3.0/10 (moderate evidence).
The idea is that if chromium helps insulin work better, it might also help your body handle fat and cut down on cravings.
Why this rating: This has been tested many times, and the effect is tiny. On average, people taking chromium lost under 2 pounds more than people taking a placebo, too little to notice, and the research is low quality. In the 1990s, the Federal Trade Commission took action against companies claiming chromium picolinate caused weight loss and controlled cravings because they couldn't back those claims up.

Understanding Effectiveness Scores

What does this mean?

Our effectiveness scoring system is based on scientific research and evidence. Each health outcome is rated on a scale of 1-10, with higher scores indicating stronger scientific support for the supplement's effectiveness.

1/10: Scientific evidence concludes that supplement is ineffective for purpose
2/10: No scientific evidence supports effectiveness
3/10: Inconclusive results regarding effectiveness
4/10: Minimal research on effectiveness
5/10: Limited evidence of effectiveness; may have potential benefits, but more research is needed
6/10: Some evidence supports the supplement's effectiveness, but research is mixed
7/10: Moderate evidence shows the supplement is effective for certain purposes, with limited population studies
8/10: Solid evidence suggests the supplement is effective, but research is not as extensive as higher levels
9/10: Strong scientific evidence supports the supplement's effectiveness, but some minor gaps in research remain (e.g., limited long-term studies or specific populations).
10/10: Ample scientific research demonstrates that the supplement is both highly effective and safe for long-term use.

Form Variations

Picolinate
Chromium bound to picolinic acid. The most common form and the one used in most studies.
Best for: matching the research
Note: the DNA damage concern in Safety comes from lab studies on this form specifically.
Chromium nicotinate (polynicotinate)
Chromium bound to niacin. Absorbed reasonably well, with less research than picolinate.
Best for: people who'd rather avoid picolinate
Chloride
A basic form found in many multivitamins. Poorly absorbed compared to the other two.
Best for: general multivitamin use, not targeted supplementation

Dosage & Timeline

Standard Dosages

Dietary Intake: 20-35 mcg daily
Weight loss/appetite control: 600-1,000 mcg daily

Blood sugar control: 200-1,000 mcg daily

There's no official upper limit. Most supplemental users take 200 to 500 mcg a day. The rare kidney and liver problems in Safety were reported at 600 to 2,400 mcg a day.

Results Timeline

Blood sugar control: 12-16 weeks for noticeable changes in glucose metabolism and insulin sensitivity
Weight management: trials measured results at around 12 weeks

All other outcomes may be noticed after extended use or lack enough studies to establish an effectiveness timeline.

Safety Information

Pregnancy and breastfeeding: Food amounts are safe. About 30 mcg a day is recommended during pregnancy and about 45 mcg while breastfeeding. There's no safety data for high-dose supplements, so check with your doctor first.
Diabetes and insulin: Chromium may make your body more sensitive to insulin. If you take insulin or other diabetes medication, your blood sugar could drop lower than expected. Tell your doctor before starting, and check your blood sugar more often.
Kidney or liver conditions: Avoid if you have kidney or liver disease. The few serious side effects reported with chromium involved these organs.
DNA damage potential: Lab studies on cells suggest chromium picolinate might damage DNA. This hasn't been shown in people, but it's an open question for long-term, high-dose use.

Critical drug interactions

Insulin and diabetes medications: Chromium may enhance insulin sensitivity, potentially causing hypoglycemia requiring blood glucose monitoring and possible medication adjustments.
Levothyroxine: Decreases absorption; separate administration by 30 minutes to 3-4 hours
Iron supplements: Chromium interferes with iron absorption and should not be used concurrently in iron-deficient patients.

Side Effects

At normal amounts, chromium from food and supplements doesn't appear to cause harm, though research is limited.

Rare, from isolated case reports

Kidney damage, mostly at 600 to 2,400 mcg a day
Liver problems
Low blood sugar
Skin rash
Anemia, low platelet counts, muscle breakdown, and unexplained weight loss

Usage Information

Most people take chromium to help with blood sugar. Some take it hoping it will help with weight loss or sugar cravings.

Chromium is a helper, not a treatment. It shouldn't replace diabetes medication, and anyone with diabetes should tell their doctor before starting it.

User Experience

Gathered from reviews and forum posts, not from studies. What people report tells you what to expect. It does not tell you whether something works.

Most reviews are about blood sugar. Some people report their A1c dropping from around 10 to under 8. Weight loss stories are less common, though they exist since chromium has been marketed that way. One user went from 463 to 211 pounds over six years, though it's unclear how much chromium had to do with it.

Many people say it cuts their sugar cravings. That could easily be placebo, since there's little research behind it.

Not every review is positive. Hair loss comes up a lot. Others mention dizziness, trouble sleeping, anxiety attacks, and nightmares, and one person had a severe reaction while also taking an antidepressant. Stomach problems are common at higher doses.

Long-term users (5+ years) often say the benefits last, while many others stop within the first month because of side effects.

Alternative Names

Chromium Picolinate, Chromium Nicotinate, Chromium Chloride

Chromium