Most supplements are garbage. Since they don't actually work, most people would never know if you replaced their magnesium or calcium supplement with chalk. Some supplements do work, but since they're not regulated, they're drowned out by nonsense and noise. OK, so you don't want to be a rube?...you do your research and then piece of shit fitness influencers tell you "ohh...that vitamin you bought form Walgreens or C…
If you replace the Calcium with chalk you would still have a source of calcium so it wouldn't be that bad :D
> Chalk is typically almost pure calcite, CaCO3, with just 2% to 4% of other minerals
The supplement I just looked up uses Calcium Carbonate. That could just be purified chalk and be in compliance with the FDA. In fact, it probably is just that.