Hi Melissa!
I'm about 5 weeks past my surgery and I have tried the bariatric Vitamins (chewable) as well as the Calcium citrate lozenges and they both made me vomit each time I took them. I found them to be too hard on my stomach at this point so my surgeon recommended taking the gummie vitamins found at the drug store, but doubling the dose (I take 8 a day total, 4 at a time at lunch and dinner).
I also take calcium chews 3 times a day, give myself a B-12 shot every 2 weeks, and a Vitamin D supplement. These can all be found over the counter, except B-12. Each surgeon recommends something different though, so PLEASE check with your doctor to make sure that these are necessary and right for you. Also, when to start them. I started a week after surgery. Hope this helps a bit!
Good luck with your surgery!!