Since starting on Neurontin for headaches, a little over a year ago, I've been diagnosed with: IBS, Colitis and High Blood Pressure. I have also had swelling and pain in my ankles and legs and constant debilatating abdominal pain and bloating. I tend to go from constipation directly to diarreha. I never had trouble with my blood pressure (other than with my first pregnancy) until I started taking this medication. It always ran about 115-120/75-80. I've started looking at info. on the web regarding Neurontin. I've learned a lot. It has many more side effects and medical causes than I was first informed about. The makers are also being sued for having their Reps. lie about it's uses and "cures". I've also read that it has terrible side effects when trying to stop. It has helped my headaches, but I feel I've paid a price for them to stop. I think that my headaches were not as bad as the abnominal pain that I'm experiencing. I'm going to see my Dr. and find ou how to stop taking it.