Effects of Low Dose Naltrexone in Fibromyalgia

Low Dose Naltrexone (LDN) has been reported anecdotally to reduce the symptoms of Fibromyalgia, a Chronic Multisystem Illness. The drug may work by regulating natural pain-reducing systems. In this study, we will administer both LDN and placebo to a small group of individuals with Fibromyalgia and Gulf War Syndrome, both Chronic Multisymptom Illnesses, to assess the drug's efficacy in treating the condition.

Stanford is currently not accepting patients for this trial.

Lead Sponsor:

Stanford University

Collaborator: American Fibromyalgia Syndrome Association


  • Drug: Low Dose Naltrexone
  • Drug: Placebo - sugar pill




Inclusion Criteria:

Currently suffering from moderate to severe Fibromyalgia or symptoms of Gulf War Syndrome
Age 18-65. Not taking any opioid analgesic Not pregnant or planning to become pregnant.

Exclusion Criteria:

Any known allergy to naltrexone or naloxone. Actual or planned pregnancy.

Ages Eligible for Study

18 Years - 65 Years

Genders Eligible for Study


Not currently accepting new patients for this trial

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
Jarred Younger

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