Oh my gosh, I have taken a variety of products and progressed to others based on subsequent testing. The supplements I take are not ones you can order yourself. A doctor's recommendation is required and come not only from Fullscript where several doctors have access to prescribing as well as individual brands that also required a doctor's recommendation.
I highly recommend you find a doctor that can test you if you have not been tested. And then follows up with testing again to check on progress.
Best to you. It's not easy and it's a journey to get back to health.
Best to you, G.