Lyrica was very helpful for me. I have fibro and neuropathy. I was on it for about 8 years. It didn't cause any real weight gain for me. However it DID cause blurred vision. I took 75 mg morning and night, but in the last year had to go down to just the night dose. Unfortunately I developed an alergic reaction and can't take it any longer.
It really helped the neuropathy, ended the numbness and tingling and burning. I did have a lot of fatigue though.