My blood work was terrible when I was drinking.
When I stopped drinking completely and forever my blood work was fine.
I did the vitamin two-step when I was drinking half a liter of vodka every night to "negate" the consequences. I took a b complex, fish oil, multi vitamin, calcium pill, and milk thistle. I took about six pills every morning. I also hoped they'd help with the hangover.
I was a classic alcoholic. If you told me that alcohol depleted "x vitamin" from the body I'd buy some "x vitamin" supplement and toss it in the cart right next to the alcohol.
I had many health ailments at 30 years old from drinking heavily every night. They all went away when I stopped drinking completely and forever.