I found this article on www.medicalnewstoday.com
Low LDN Dose Successfully Treats HIV/AIDS, Cancer and MS by Strengthening Immune System
23 May 2005
A very low dose of the FDA-approved drug naltrexone has been discovered to be an effective up-regulator of the immune system. The new therapy, called low dose naltrexone (LDN), has shown remarkable effects on an array of illnesses including HIV/AIDS, cancer, and autoimmune diseases such as MS. ...