I am almost 11 years out and all I have to say is PLEASE use a bariatric vitamin!!! Flimsy ones are cheap and you get what you pay for:))) I had my labs done and even taking a good bariatric vitamin I am low in D. When I first stated I used Vista vitamins....then Bariatric advantage.. Now I use new life. We already compromise our absorption. Yes your labs might be ok for the first year or so but then your body's reserve is used and long term there are issues. Best of luck:)