You are correct, it is not a benzodiazepine or even a GABA agonist at all. Chemically and pharmacologically, it would be grouped with the tricyclic antidepressants. It works by inhibiting the reuptake of norepinephrine as well as blocking histamine and muscarinic acetylcholine receptors. It's prescribed as a muscle relaxer.
It's not really a recreational drug in my opinion. It most likely will just make you feel sleepy like anti-histamines do. I find it to be an effective sleep aid in the 10-30 mg dose range, although it can be hard to get out of bed the following morning (most sedating anti-histamine like drugs leave a groggy feeling in the morning). Some people find cyclobenzeprine to produce an uncomfortable feeling though, so you may want to start with a low dose. I wouldn't pay for them, but I would accept them if given to me, just to keep on hand for when I'm having trouble sleeping.
This. It will probably just make you fall asleep and if you don't I still wouldn't call its sedative effects recreational.
