I'm a firm believer in "basic" supplementation to avoid having to spend excessive time thinking about what I eat on a daily basis, but imnrho, that stuff is definitely in the "snake oil" category unless you have very specific dietary needs
and you accept quite a few very "theoretical" arguments about what are and aren't "good sources" of supplements. (Most of which "sound good" but lack any scientific
in vitro or statistical basis.)
I strongly suggest you look over the
Linus Pauling Institute's website (it's affiliated with the Oregon State U). Not necessarily for their bottom line recommendations, but the general discussions of the various vitamins and minerals, as well as the broader discussions of why and when you might want to take supplements. Dr. Pauling might have had a couple of somewhat "wacky" ideas, but he was by no means a "quack" and this namesake institute is even less "fringe" than some of his ideas/hypotheses were. There's a lot of good information and links some to other reliable sources there.