Should I take my vitamin D with vitamin C?

Vitamin C and vitamin D are found together in many multivitamins, so taking them together should not be a problem for most people. However, if you're at risk for kidney stones, consult your doctor before taking supplements. Vitamin D, vitamin C and calcium all can raise your risks for kidney stones, especially when taken in high amounts. Talk to your doctor about whether you should take vitamin supplements and, if so, which ones are the best for you.