Low-dose naltrexone is typically dosed at 1.5–4.5 mg daily, started low and titrated weekly. Here's a complete reference to LDN dosing, including by condition, formulation, and timing.

Low-dose naltrexone (LDN) refers to daily naltrexone dosages that are roughly one-tenth or less of the standard opioid addiction treatment dosage. Most published research suggests a daily dosage of 4.5 mg, but this can vary by a few milligrams. [1]

LDN has been utilized in the management of a number of chronic inflammatory and central pain sensitization conditions. 5 These include fibromyalgia, Crohn’s disease, multiple sclerosis (MS), complex regional pain syndrome (CRPS), Hailey-Hailey disease, and cancer. 7,8 In a recent case series, there was a pronounced therapeutic effect of LDN ...

ABOUT LDN Naltrexone is an opioid antagonist used primarily in the management of alcohol and opioid dependence; the FDA approved Naltrexone in 1984 at 50mg. However, “Accumulating evidence suggests LDN can promote health supporting immune-modulation, which reduces various oncogenic inflammatory autoimmune processes.”1

What is LDN (Low Dose Naltrexone)? Naltrexone is in a class of drugs known as opiate antagonists. Its normal use is in treating addiction to opiate drugs such as heroin or morphine. The dose used for that purpose is usually between 50mg and 300mg daily.

Low-dose naltrexone has been shown to improve symptoms of fibromyalgia and chronic fatigue syndrome with minimal side effects. However, most of the LDN studies have been small, and more research on immune system and anti-inflammatory benefits is needed.