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)
• Heparin
• Aspirin

Drugs for diabetes -- Because vanadium may lower blood sugar levels, people who also take medications to lower blood sugar could be at risk of developing hypoglycemia (low blood sugar).