I am on 3600 mg of gabapentin and 100 mg of amitriptyline and day. I have been on 3600 mg of gabapentin for almost three months now. And have been swollen for about 2 weeks, wouldn't it have been swollen a lot sooner if this is the cause? And everyone talks about flares...I have felt like this since july of 2010, with exception to the swelling.