I have never had any side effects from it. I have not heard of it being prescribed for pain.

I see that it is used for fibromyalgia, diabetic neuropathy and postherpetic neuralgia. Maybe he suspects your pain is neuropathic.

It does nothing for my head aches, even at 900 to 1200 mgs at a time.

btw, I should go take my bed time dose.

Hope it helps you.