The best food sources of vanadium are mushrooms, shellfish, black pepper, parsley, dill weed, beer, wine, grain and grain products, and artificially sweetened drinks.
Vanadium exists in several forms, including vandal sulfate and vanadate. Vanadyl sulfate is most commonly found in nutritional supplements.
How to Take It
You should not give vanadium supplements to a child.
Scientists don't know how much vanadium people need. The average diet provides 6 - 18 mcg.
The safe upper limit is 1.8 mg. Higher doses may be toxic.
Because of the potential for side effects and interactions with medications, you should take dietary supplements only under the supervision of a knowledgeable health care provider.
Common side effects include stomach pain, diarrhea, nausea, vomiting, and gas.
Some animals given vanadate supplements have developed anemia, low white blood cell counts (the cells that help to fight infection), and high cholesterol. People with high cholesterol, anemia, an infection, or any health problem causing a low white blood cell count, such as HIV, should not take vanadium without first talking to their doctor.
Because vanadium may lower blood sugar levels, people with diabetes who take medication to control blood sugar could be at risk of hypoglycemia or low blood sugar if they take vanadium.
Pregnant or breastfeeding women should not take vanadium. Animal studies linked high doses of vanadium with decreased fertility, birth defects, and other complications.
People with kidney disease should not take vanadium.
High doses of vanadium (more than 1.8 mg per day) may cause liver or kidney damage, and research suggests vanadium may be harmful to the kidneys. Other studies link high blood levels of vanadium with an increased risk of breast cancer.
If you are being treated with any of the following medications, you should not use vanadium without first talking to your health care provider.
Anticoagulant or antiplatelet dugs (blood thinners) -- Vanadium may increase the risk of bleeding when taken with these drugs:
- Clopidogrel (Plavix)
- Warfarin (Coumadin)
Drugs for diabetes -- Vanadium may lower blood sugar levels, so people who also take medications to lower blood sugar could be at risk of developing hypoglycemia or low blood sugar.
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