Just had another thought, chia seeds don’t agree with everyone either (never tried them and have no desire to), but are often touted on diet forums (or is that fora?).
Also, if this is first thing in the morning, what are you eating or drinking last thing at night?
Tp R2020 – are you able to focus on natural food sources rather than factory-produced foods, after all you can’t hide sweetener in a cauliflower!
My husband and I have only been following this for 5 weeks now, but we’ve done it using proper food, just no white carbs and for now, no pulses or grains either, and have not had any gut problems. Drinks are water, black coffee or herbal teas, no diet drinks which are full of sweeteners.
An example is eggs for breakfast, homemade veg soup for lunch, and lean protein with leafy veg or salad, or a stew with tinned tomatoes as a base for supper. One square of very dark chocolate (Lidl 85% or 95%) is a sweet treat occasionally.
Good luck!