Wondering if anyone has had experience taking neurontin for anxiety and/or chronic pain. I've been taking it since approx. August 2012, and have increased from 300 to 500 mg daily, so a relatively small dose. Problem is, I have gained about 10% of my body weight, which isn't light to begin with. The prescribing psychiatrist tells me weight gain isn't common on it, yet my pain management doctor tells me it's a very common side effect. So what is your experience? I've also become vegetarian this year and wonder if I am replacing meat with more carbs like bread, potatoes, etc. so, trying to add in more veggies to see if that will help. Thanks in advance for sharing any knowledge you have on this topic!