And ALL of mine list 20 calories per tablet, which is why I asked the question. And every brand I have used and compared, adult, children's, bariatric, regular, all have some calories, ON THE LABEL.

I've seen people get a lot of different recommendations from their doctors. Some programs say that children's Flintstones Viramins are ok. Others say they are rubbish. So first off, do what your doctor says.

After surgery, you will need to be taking vitamins as chewables or liquid for a while, since you can't swallow big tablets, and your stomach may not be able to dissolve the gel on capsules. So picking a chewable cuts down on the number of options quite a bit.

The next consideration is that all vitamins are not the aame. After RNY you won't be able to absorb some kinds of vitamins nearly as well as before. For example, you will need calcium, and calcium citrate is much easier to absorb than calcium carbonate. There aren't many chewable calcium citrates around. Just as one other example, there are different kinds of viramin D -- your new body can absorb vitamin D3 best. And the list goes on. That's why some people need a variety of supplements. It would be hard to get everything all together, and impossible to get it or be able to take it all at once. For instance, you can't take calcium and iron together, as the calcium will block absorption of the iron.

It becomes a little bit of a juggling act. I don't know how different this is for those with the band or sleeve, I'm writing merely from the RNY perspective. Maybe someone can say something specific about prenatal vitamins, since I have no experience with those.