Off-label
Mixed evidence
Low-Dose Naltrexone (LDN)
Growing evidence and strong community interest. Honest about where the research is.
30-second summary
Low-dose naltrexone is naltrexone (an opioid antagonist used at standard doses for addiction) taken at a fraction of the normal dose — typically 1.5-4.5mg instead of 50mg. At low doses it appears to modulate the immune system and reduce inflammation. Used off-label for autoimmune conditions, fibromyalgia, and increasingly for menopause symptoms — particularly mood, pain, and fatigue. The evidence is early but the interest is significant.
What it is
At low doses, naltrexone briefly blocks opioid receptors, causing the body to upregulate its own endorphin production. This appears to have anti-inflammatory and immune-modulating effects. It must be compounded at the correct low dose — standard tablets cannot simply be divided.
What the evidence shows
Small trials and significant anecdotal reports suggest benefit for pain, fatigue, mood, and quality of life — particularly in women with autoimmune conditions which often worsen at menopause. Limited but growing evidence specifically for menopausal symptoms. The mechanism for hot flash reduction is theoretically plausible but not yet well studied.
Honest about risks and side effects
Generally very well tolerated. Vivid dreams are the most commonly reported side effect, particularly in early weeks. Cannot be taken with opioid medications — blocks their effect entirely. Must be obtained from a compounding pharmacy as standard naltrexone tablets cannot be divided reliably.
What we do not know
Clinical trial evidence specifically in menopausal women is very limited. Optimal dose has not been established in this population. Long-term effects are not known. The specific mechanism for any benefit in menopause is not established.
Who it is best for
Women with autoimmune conditions that worsen at menopause. Women with significant fatigue, brain fog, or pain that has not responded to other approaches. Women interested in an emerging option with a good safety profile.
Who should be cautious
Women taking any opioid medication — complete contraindication. Women who need compounding pharmacy access (not available at standard pharmacies).
How to access this
Requires a prescription. Many GPs are unfamiliar with it — a functional medicine doctor or integrative practitioner is more likely to be familiar. Must be prepared by a compounding pharmacy. The LDN Research Trust has practitioner resources.
Questions to ask your doctor
• Are you familiar with low-dose naltrexone for autoimmune or inflammatory conditions?
• Given my symptoms and history, do you think LDN is worth trying?
• Can you prescribe it or refer me to someone who can?
• Do you know a compounding pharmacy that prepares it correctly?
Rose honest take
"LDN is not yet mainstream but the evidence trajectory is interesting and the safety profile is good. If you have autoimmune issues alongside menopause symptoms it is worth researching and discussing with a knowledgeable practitioner. Rose is watching this space."