Since i seem to have mast cell issues and definitely have histamine issues I can't risk to take any random probiotics.
My gut is very sensible....
Since you have some knowledge about probiotics. Do you know any probiotic strain that can increase dopamine?
Always when i manage to push my dopamine levels up my gut becomes so much better and stable...
It might be a Vitamin C issue, a) Vitamin C is a natural antihistamine and b) it is involved in dopamine synthesis.
If you want you can just try to take higher doses of Vitamin C. If you start with it, you should start with approximately 0.5 g per day and then increase with another 0.5 g every second or third day such that your body can get used to the higher intake. Distribute the intake over the day as the higher a single dose less is absorbed. It is also tolerated better if you distribute it.
I am based in Europe and I have a nice living Kefir. If you want I could send you one for free, if you refund the price for the delivery via dhl or such, which shouldn't be too high I guess.