Could you tell me what are good websites to buy vitamins from?

Check evidence: First of all, check if the products have good evidence behind it and check for certifications. There are thousands of nutritional supplements out in the market, but only a few are certified by nsf, one of the leading public health management solutions. Check these articles: http://otwithmd.Com/is-your-nutritional-product-or-supplement-nsf-certified/ also, http://otwithmd.Com/why-use-juice-plus/.