SARMS, grey area substances

What’s the policy for SARM usage, or anything that could be considered “grey area”?

I’m referring to anything that is not a federally or locally controlled substance but is simply classified as currently being researched. Not approved by FDA, but not federally illegal either.

I’ve asked about other supplements and substances like this in the past, haven’t gotten any real answer. I’ve even e-mailed the FDA, received no response on this.

What more do you need here? Are you using it for a purpose it was not intended?