CJPsMom,
Sodium bicarbonate is what is in baking soda. I have to reiterate what ehtansky21 said. adding sodium bicarbonate tablets has helped my daughter immensely.
Basically, my daughter was taking Pancrecarb enzymes since she was 2. Pancrecarb works well for my daughter because it is buffered in a bicarbonate, to prevent the enzyme from breaking down in the stomach. The FDA took Pancrecarb off the market and it is still off the market. Soooo, i had to find a substitute that worked, which took alot of thinking on my part. Zen pep did not work AT ALL for my daughter.. She had nausea, actually had to get up in the middle of the night to poop when we tried Zen Pep. She had NEVER done that before.
Finally, we switched her to Creon and with my CF doctors permission we tried giving her a small bit of Sodium Bicarbonate tablets every time she took her enzymes. It has worked AWESOME. no more stomach aches; She gained 5 pounds or more since we started this, in a very short period of time(like 3 months) I have even started watering down her juice and changed her from whole milk to 2%.
I would discuss this with your CF doctor/nutritionist before trying this of course. I honestly don't know what I would have done for my daughter is this had not worked. Our team was so impressed with the weight gain.
Let me know if you need more info about this!