Indications
Chromium is a trace mineral the body needs in very small amounts. It is mostly found in multivitamin and mineral supplements, used to support general nutrition and to prevent deficiency. True chromium deficiency is rare and mainly seen in people fed through a drip for a long time. Chromium is sometimes promoted for blood sugar control, but the evidence is limited and it does not replace diabetes medicines.
How It Works
Chromium helps insulin (the hormone that moves sugar from the blood into cells) work properly, and takes part in the body’s use of carbohydrates, fats and protein.
Dosage and Administration
Take the supplement exactly as directed on the pack, usually one tablet or capsule a day with food. Adults normally need about 25 to 35 mcg a day, and most supplements provide this or up to about 200 mcg. Do not take more than one chromium-containing product at a time unless a doctor advises it. Children: only products made for children, as directed.
Interactions
- Insulin and other diabetes medicines: chromium may slightly add to their blood sugar lowering effect.
- Levothyroxine: chromium can reduce its absorption; take them 3 to 4 hours apart.
- Antacids and acid-reducing medicines may lower chromium absorption.
Contraindications
Allergy to chromium or any ingredient of the product. People with severe kidney or liver disease should not take chromium supplements unless a doctor advises them.
Side Effects
At normal supplement doses, side effects are uncommon. Some people get stomach upset, nausea or headache. Get urgent medical help if you notice signs of a serious allergic reaction (swelling of the face or throat, difficulty breathing, widespread rash), yellowing of the skin or eyes, dark urine, or, if you have diabetes, shakiness, sweating and confusion from low blood sugar.
Pregnancy and Lactation
The small amounts in pregnancy and general multivitamins are considered safe. Avoid high-dose chromium supplements during pregnancy and breastfeeding unless a doctor advises them.
Precautions and Warnings
If you have diabetes, check your blood sugar more often when starting a chromium supplement and tell your doctor. Use with care in kidney or liver disease. Supplements support a healthy diet but do not replace it.
Overdose
A single extra dose is unlikely to cause harm. Long-term use of high doses has been linked to kidney and liver problems. Stop taking it and seek medical advice if a large amount has been taken.
Therapeutic Class
Trace element (mineral supplement).
Storage
Store below 30°C in a dry place, away from light and out of the reach of children.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.