If my gallbladder has been removed, what modifications, if any, need to be made for the program and/or supplements? Do any of the supplements contain ox bile for those without a gallbladder?

Yes, our digestive enzymes contain ox bile and you should be just fine without a gallbladder. You may have to purchase one additional bottle of enzymes/ox bile half way through but outside of that, you'll be good to go.

We had LOTS of successful GT5-ers in the first round without gallbladders.