I had prescription strength Naproxen for a while for my sciatica and back pain. It is quite powerful. It can cause easy bleeding and bruising, especially if taken for long periods of time. It also made me very drowsy shortly after I took it.

It interrupts pain and also decreases swelling. If something in your back is swollen and pressing on a nerve, it can help reduce the swelling and perhaps also the inflammation of the nerve.

It should not take long to have an effect. Maximum of an hour or so.

I was able to boost the effect by icing the affected area.

Hope you get some relief soon!