I'm a long term sufferer of RLS. Mine comes on in the evening when I'm trying to relax after a long day. I've never sought out any medication. Choosing instead to use a TENS unit wen the symptoms get really hard to deal with. That works fine for me.
Last year I hurt my back and herniated a disc. I was able to get on the medical cannabis program in my state. I started using a vape pen for the pain. It contains about a half gram of cannabis concentrate that I can inhale as a vapor when ever I need to. I only use it in the evening, again when trying to relax. It has been a tremendous help. I take no medication. I only use the vape pen every evening.
As it turns out, the side benefit to the vaping is it also takes away my RLS in about 10 minutes. It just completely stops, period. I sleep through the night with no RLS at all.
If you have a program where you live you light try to get in. Not sure, although I doubt it, if RLS is a listed "ailment" for most programs. You may need to find another issue that IS listed. If not, find a source for cannabis and use a herb pen. It should have the same effect.
I have no side effects from using the cannabis and there is no hang over the next morning.
Worth a try. Why suffer if you do not have to?