If you're attempting to lose weight with a low-carb approach (or just like the results of low-carb eating), here are the two sources of meal replacement bars I've been able to find.
First and best are the Think Thin! bars. Specifically formulated to be gluten-free, they taste good. (To me, but you have to already be used to the protein bar world, where everything tastes a little odd.) They are not just candy substitutes, like a lot of the Atkins offerings, but also offer 25% of MDR of a reasonable list of vitamins and minerals. These bars have been life-savers for me when I'm travelling on business, especially in Europe where "continental breakfasts" are basically wheat and sugar, or at tradeshows where I find the same problem.
There are about eight flavors. My personal favorites are the french vanilla latte, the brownie crunch and the mudslide expresso mocha.
Online prices vary widely, but the best I've found are at at the site(
www.thinkproducts.com): $17.95 for a box of ten bars. And right now,
www.vitacost.com is selling them for $15.99 a box.
A number of the Atkins bars are also gluten free. But you have to pick the right ones. If you call them at 800) 2-ATKINS, they'll give you the list, but these are what I remember as GF:
Creamy cinnamon bun breakfast bar
Almond Brownie
Coconut Chocolate
Chocolate Decadence
Chocolate Peanut Butter
No Aktins bars say "gluten free," but as I said, you can confirm this by calling them.
You will find other bars that do not appear to have any gluten ingredients (I've tried them all, I think), but do not say gluten-free. There is an ingredient -- I can't remember the name right now -- which is helps to mix the ingredients during the preparation. Though it doesn't say it has wheat, it is "carried" on a wheat base, whatever that means. It's enough to set off a reaction, as I found when I tried them.
If it doesn't say gluten free, and you don't see anything in the ingredients, call the company before you buy them.