A Promising Therapy
What Is Low-Dose Naltrexone?
Naltrexone is an FDA-approved medication used at standard doses (50 mg) to treat opioid and alcohol use disorders. At much lower doses — typically 1.5 mg to 4.5 mg — it has demonstrated a very different and potentially powerful effect: immune modulation and anti-inflammatory activity.
Low-Dose Naltrexone (LDN) is an off-label therapy that has been used by integrative medicine practitioners for decades. A growing body of research and a large community of patients report significant benefits for autoimmune conditions, chronic pain, inflammatory diseases, and mood disorders.
LDN is generally well-tolerated, inexpensive, and non-addictive. At The Renewal Lab, we evaluate each patient individually to determine whether LDN may be an appropriate addition to their personalized wellness plan.
The Science
How LDN Works
Immune Modulation
At low doses, naltrexone briefly blocks opioid receptors, prompting the body to upregulate its own endorphin production. This rebound effect helps regulate immune function and reduce inflammatory signaling.
Glial Cell Regulation
LDN is thought to reduce the activation of microglia — the brain's immune cells — which play a key role in neuroinflammation and chronic pain. This may explain its benefit in neurological and pain conditions.
Anti-Inflammatory Effects
By modulating toll-like receptor 4 (TLR4), LDN can reduce pro-inflammatory cytokine production, offering a systemic anti-inflammatory effect without the side effects of traditional immunosuppressants.
Endorphin Upregulation
The temporary opioid blockade causes a compensatory increase in endorphin levels, which supports mood, immune balance, and overall well-being — contributing to LDN's benefits in mood disorders and fatigue.
Conditions We May Address
Who May Benefit from LDN?
LDN has been studied and used clinically for a wide range of conditions. The following represent areas where research and clinical experience suggest potential benefit.
Hashimoto's Thyroiditis
Multiple Sclerosis (MS)
Crohn's Disease
Ulcerative Colitis
Fibromyalgia
Chronic Fatigue Syndrome / ME-CFS
Lupus (SLE)
Rheumatoid Arthritis
Psoriasis
Ankylosing Spondylitis
PCOS
Endometriosis
Long COVID
Chronic Pain Syndromes
Depression & Anxiety
Autism Spectrum Disorder
Lyme Disease
Interstitial Cystitis
This list is not exhaustive. LDN is an off-label therapy. Individual results vary. A thorough evaluation is required to determine whether LDN is appropriate for your specific situation.
Explore Whether LDN Is Right for You
Schedule a consultation to discuss your health history and whether Low-Dose Naltrexone may be an appropriate part of your personalized wellness plan.
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