A: It depends on who you ask. If you ask people like Dave Asprey, who takes 60 supplements in a sitting, they might tell you that there is no limit. Honestly, it depends on what you're trying to achieve. There are some supplements that are really, really good as maintenance supplements that most people would benefit from: e.g., probiotics, multivitamins, maybe some fish oils, maybe some digestive enzymes. Then there are various supplements utilized for performance improvement. There are supplements that can be utilized for addressing infections.
I feel that if you have to take a lot of supplements, maybe there's something else that's going on in your body. For example, if you have mold toxicity, you might be on a ton of different supplements for a variety of different symptoms, but you actually need to address your household situation and eliminate the trigger at the source first and foremost.