Different flavor gives me a lot of gas

Hi,

I almost always had Plenny Shake Active Chocolade and just tried Plenny Shake Active Vanilla again after a long time.
I have very little to none gas with the chocolade version. But when I switched to the Vanilla version I got (little painfully) bloated and passed a lot of smelly gas…which even resulted in very bad sleeping.
I tried vanilla a few times and it always had the same effect.

So I got a few questions:

  1. How is it possible that a different taste is giving me these bad feelings?
  2. Does it have to do with the flavor ingredients?
  3. Does the natrual flavor ‘fix’ these inconvenients? (I’d rather choose this one then and add flavor by my own)

Thanks!

Greetings,
Paul, JJ user for like 2 years