I agree that the reason that the pharmaceutical companies don't go through the necessary FDA approval for the use of existing cheap drugs for new diseases is that these studies are enormously expensive and there is little money to be made on these cheap drugs.
I asked my GI if she had ever prescribed LDN for Crohn's and she did not know what that was. She only knew of Naltrexone for overdoses and said that it generally made people feel "crummy". It would! But that is for its standard use of opioid withdrawal, at the standard dose. I think it's a little concerning that something that shows such promise, the study of which was recently published in the American Journal of Gastroenterology, should not even be a blip on the radar screen of my GI. But as Kev pointed out the doctors do have to cover their arses, so they aren't necessarily on the lookout for fringe alternative treatments, however effective they may be. My GI had actually never heard of the Specific Carb. Diet, either.
Penn State has received funding to do another LDN-Crohn's study. "As a result, Dr. Smith received a substantial NIH grant which is funding a definitive Phase II placebo-controlled clinical trial."
http://live.psu.edu/story/22102 http://www.lowdosenaltrexone.org/ldn_trials.htm
Penn State Phase II Trial of LDN Therapy for Crohn’s Disease
http://www.skipspharmacy.com/sppress/?p=75
My GI did ask whether the Penn State study had been double-blind. It had not, and the implication was that the result may have been due to the placebo effect. Point well taken, for sure. However, the empirical data regarding the efficacy of the drug with MS makes me lean toward the idea that the drug may indeed be effective. I'm really looking forward to the Phase II study to settle this.
I e-mailed my GI some more info and have not heard back from her. I am going to assume from her reaction that she would not want to try this drug on me.
However, I have a friend who is a doctor who has worked with HIV patients for years. They use LDN for HIV and hopefully he is familiar with it and may write me a script. If not, there is one more doctor here that I might try before resorting to online.
My feeling remains - hey - it's worth a try!