Sorry for bringing up an old thread but am interested in GH too. You could try talking to an endocrinologist. I've had digestive issues forever that have been called IBS. I went to a great endo that noticed my IGF-1 levels were low and put me on GH. The digestive issues completely went away after a few months. It was funny, as I wasn't really paying attention to the digestive issues because I was feeling so much better in so many ways.
Unfortunately, my insurance company quit paying for the medication after the 1st year, and the benefits from the GH disappeared within about 6 months. My digestive issues were back and much worse. I've lost 45 pounds in a few months and working towards a diagnosis of Crohn's (ASCA iga,igg positive). Can't find a good GI doc in my area. I'm now trying my best to get the insurance to cover the GH. It's very expensive at about $1500 - $2000 / month for my dosage.