You might try Motrin (ibuprophen). You can actually get prescription for up to 600mg per pill. BUT you can take up to 3 over the counter pills (200mg). You can’t take this stuff forever. Like all pain meds, it can cause harm. When I was suffering from shingles, my doc strongly suggested Motrin. He dealt with pain a lot in his practice because he was he team doc for the NY Jets.
A friend had nerve pain in his foot. He swore by Aleve. I do not know what the max is for that medicine.