7-OH is the name for derivatives of kratom that contain the active ingredients.

It has opioid-like addiction tendencies.

Lots of people who used kratom to wean themselves off opioids are now addicted to 7-OH. This includes many people over the age of 30.

Evan Edinger (who is 35) was addicted to it (see YouTube link).

It's a not-opioid that just plays with the opiate receptors in your brain and can be purchased in a concentrated form at your nearest gas station in a lot of US States.

Kratom has been around for a while, I remember seeing it in headshops at least a decade ago.

I thought they were talking about krokodil, but nope... I've literally never heard of 7-oh.