Check the ingredients list for sugar alcohols. There are a bunch of different ones but they all end in -ol, like malitol, mannitol, xylitol, etc.
Some people are particularly sensitive to one or more sugar alcohols. The interesting thing is that malitol might affect me but I'm fine with xylitol (just an example) while you may be just the opposite.
If you're sensitive to a particular sugar alcohol, it will cause you gastrointestinal distress - nausea, gas, bloating, cramping, diarrhea, etc - even in small quantities and usually you are affected pretty quickly.
Most people cannot tolerate a large amount of any sugar alcohols. Low-carb candy is well-known for this. If you eat too much of it, you WILL have the above symptoms.
I'm guessing you're very sensitive to the particular sugar alcohols in this brand of low-carb bread. Maybe a different brand that uses a different sugar alcohol may not affect you this way.
Let me know if that's the case - I'm curious!
I hope you recovered quickly!
