Which supplement is basically useless/unproven for lifespan/healthspan

Can anyone list supplements that probably useless or unproven yet?

Lots of prevalent substance are currenting selling well on the market, C15:0, Butyrate Acid, L- Ergothioneine… but do they really helpful for extending lifespan?

Anyway, supplement is not medicine, I won’t consider it as a fraud if it has a little bit positive effect.

Here’s a good place to start.