I was tested deficient in Vanadium. My plan is to take this product for 6 months after which I will see if it raises my vanadium. I was happy to be able to add just vanadium to my supplement protocol since when looking for just vanadium it seemed many other things were added that I didn't need, so am happy this product was available and pretty affordable too. The bottle will last me a long time. It was nice too when contacting the company asking when and how to best take the vanadium I got a quick answer. Thank you