actually, I do not take this, but NAD+, which has helped me a lot.
There is a lot of experimentation you have to do in figuring out what works. You might need NAD+. Another person might need NADPH. If you didn’t take one but took the other it might make you feel worse
https://www.biorxiv.org/content/10.1101/2022.01.21.477227v1
DNA plays such a huge role and your local Dr will be clueless on a lot of it.