Low dose naltrexone

Naltrexone is a drug normally used to treat drug dependence. Dosage for standard use is around 50mg. Low-dose Naltrexone (LDN) involves usage around 4mg per day and is off-label.

Jared Younger did a study that concluded "... low-dose naltrexone may be an effective, highly tolerable, and inexpensive treatment for fibromyalgia."