My best tip on how to save money on vitamins is to buy a pack specific to your need. For example, if you are a diabetic, purchase a 30-day supply of vitamins/minerals sold as a 'diabetic formula'. This approach is the only way I know to get vitamins on the cheap that might cost more separately.
Online couponing has become increasingly popular over the last few months. There are a lot of iOS apps that offer coupons on all sorts of products, including vitamins. Please download Ibotta. I've scored a couple of great coupons for vitamins on there.
