Before taking probiotics try to learn about biome if you didnt, please. There are a lot of strains. Each strain have its properties. Every strain generate different residuals. Some of them ammonia, some of them histamine, some of them d-lactic. If you didnt check your biome you dont know if you have overgrowth of bacteria (they both can generate excess of residuals). Excess of ammonia can lead to hyperammonomia (neurotoxicity) f.ex. Also bacteria compete for the same territory, if you dont know what you’re doing maybe you’re killing some bacteria that you dont want to kill. Also death of bacteria are residuals that can trigger symptoms.
Not saying dont use gut approach. I really think It can helps. Just saying that you can learn a lot. And that just by cuting sugars and processed food you Will be doing a lot
Check these subreddits:
r/Guthealth
r/SIBO
r/Longcovidgutdysbiosis
r/HistamineIntolerance
r/Candida
r/microbiome