it’s an eight year old injury. Stabbing head pain and insomnia and waking up with severe internal tremors are with me for life :)
But modern medicine is moving pretty quickly, so who knows. Kava Kava? will look it up
You might also want to take a look at Unisom Sleep Melts. They work for me, and are they are not habit-forming. Also, they are over-the-counter. The only side effect I've noticed as a slight dry mouth. Not a big deal.
Of course, check with your doctor to be sure they are right for you. And check the package carefully. Some Unisom products are habit-forming, but as I said, the melts are not. It'll say so on the package.
Good luck!