Media literacy is great and a good idea, but also not an adequate answer. Especially not for people who are vulnerable. There needs to be accountability and justice for people harmed by disinformation, especially health disinformation. There's a reason that we have licensing scheme for doctors instead of relying on a "buyer beware" model. Health influencers should not be a thing.
Also, bloody hell, supplements should be regulated. Like, why are dangerous doses of things for sale in the first place??