I'm 82. I found Gabapentin helped my numb, stinging feet a lot. I took 300mg.3 times a day. When I hurt my back my pain doctor switched me to pregabalin. I take one in the morning and one at night. I think it holds the stinging off better because I was really bad about taking the gabapentin afternoon dose on time.
I like it; it makes me feel happy and I think my feet feel the rug under me better as I go barefoot all the time in the house. (I live in mostly sunny California.)