Maybe the problem is in the digestion process? I also get a stomach ache if I eat too much or try some unusual food. I'm currently taking the dietary supplement Gundry MD Bio Complete 3 https://www.gundrymdbiocomplete3.com/reviews, which effectively helps improve digestion and also speed up metabolism. I think it's worth a try.
I decided to try Balance of Nature because I wanted to add a little more useful substances to my diet. This is a supplement that contains extracts of fruits, vegetables and spices, and it should help maintain health. I chose balance of nature because it's not always possible to eat all the necessary products every day, and here everything is in capsules. Of course, this is not a panacea, but as a supplement to nutrition it can be quite useful. I especially like that everything is natural.