Most vitamins are good, just make sure they don't have any added starch in them. I know Atkins brand vitamins are expensive, and I was avoiding buying them, but I feel so much better since I started taking them. They have extra C and B vitamins in them and fruit and veggie vitanutrients. You can go to any health food store and compare. Most vitamins in health food stores have the carb count listed on the back, and most of them are starch and yeast free. You will feel so much better when you start taking them. I promise