It looks interesting. This is another site.
http://www.lowdosenaltrexone.org/
> Crohn's Disease
As of September 2002, Dr. Bihari was following eight patients with Crohn's Disease on LDN. In all eight cases, within 14-21 days the signs and symptoms of disease activity stopped. All eight had remained stable since anywhere from 2 months to 36 months.
That came off the site above.