Vitamins and supplements work great, knowing which ones to take is very difficult.
I but my vitamins/supplements from vitamin shop/sprouts/whole foods ( all three local shops gave up yammering at me for open carry too, I kept on smiling and saying OK and doing it again )
I never use multi vitamins or major brands you see on TV.
My current regimen is DHEA and pregnenolone , D3, tongkat ali,fenugreek, saw palmetto , E, tribuplex, Solgar brand Bcomplex 100. Flaxseed powder
I plan on adding creatine and trying an experiment with N.A.C and glycine , and I need to also find a new source for the special nutritional yeast I like....
I got into higher carb last year, to wean myself off the sugar cravings I ate a lot of Quest bars and cookies .
except for bananas and larabars - zero sugar .. I drink water/black coffee or black tea.
lately I've been going more and more keto/carnivore diet - I am planning on going full carnivore for a month or two
I was bordering on 190 at Christmas now I'm roughly 170 5'8
These things do work, but finding good info is exceedingly difficult , especially around vitamins supplements -
Andrew Huberman yt channel good place to start
https://youtu.be/Bll8oVpo23oStanford neuro scientist