side effects of taking too much vanadium
Vanadium is LIKELY SAFE in adults, if less than 1.8 mg per day is taken. At higher doses, such as those used to treat diabetes, vanadium frequently causes unwanted side effects including abdominal discomfort, diarrhea, nausea, and gas. It can also cause a greenish tongue, loss of energy, and problems with the nervous system. Vanadium is UNSAFE when used in large amounts and for a long time. This increases the risk of serious side effects including kidney damage. Vanadium might lower blood sugar.