It's a supplement. No fda rules about it.

I think you could sell it by being very vague and not claiming it actually does anything.

As an example, just rattle off a bunch of insanity as necessary to convince idiots that you "get it" like "keep your blood pure", then do what lots of supplements do with super vague meaningless claims like "Contains Iron which essential for your blood to function properly"

I'm feeling kind of ok with people that believe vaccines magnetize their blood spending their money on this.