LDN & Better Sleep

Learn more about how Low Dose Naltrexone (LDN) can help produce better, more restful sleep.

Key takeaways:

• LDN works by briefly blocking opioid receptors, triggering a rebound that boosts endorphins and reduces inflammation
• Reducing evening cortisol is one way LDN may help you fall asleep faster and sleep more deeply
• Sleep disturbance is the most common LDN side effect, but it is usually mild and fades with continued use
• Cutting caffeine after 12pm, getting 30 minutes of daylight, and keeping a consistent sleep schedule all support better rest
• AgelessRx offers LDN prescriptions through an online consultation with a US-licensed provider

What Is LDN?

Low Dose Naltrexone (LDN) is an oral medication that works with the immune and endorphin systems to create various therapeutic effects. LDN is commonly used to lower markers of inflammation in the body, reducing chronic pain and fatigue. There are very few side effects.

How Does LDN Produce Better Sleep?

Low Dose Naltrexone is commonly prescribed at doses between 0.5-9 mg, with the most commonly used dose of 4.5 mg. At such a low dose, LDN works by briefly blocking opioid receptors in the brain for a few hours. This triggers a rebound effect, prompting the body to produce more endorphins and leaving you with less pain, less inflammation, and a greater sense of well-being. LDN also acts directly on the brain’s immune cells (called glial cells) by blocking TLR4, a receptor that drives brain inflammation when activated.

Since the body is no longer focused on inflammation, pain, irritability, or other problematic symptoms that may affect sleep quality, most patients report that they sleep better and more deeply. The reduction in inflammation is also thought to help balance key neurotransmitters in the brain, such as dopamine, serotonin, and GABA.

Another reason LDN can help to produce better, more restful sleep is due to its ability to reduce cortisol levels in the evening (which can interfere with sleep). Dr. Wilfrid N. Raby, Adjunct Clinical Assistant Professor for the Department of Psychiatry and Behavioral Sciences at the Albert Einstein College of Medicine shared his experience using LDN “to modulate sleep, because you are abolishing that cortisol surge in the evening, which is what sustains the sympathetic activity and contributes to the delay in falling asleep.” He added, “LDN is short-acting, causing a rebound surge of cortisol in the morning that contributes to alertness during the daytime, but there is also improved sleep at night.”

Can LDN Cause Sleep Problems?

It is true that the most commonly experienced side effect from LDN is sleep disturbance. However, for most patients, it is mild and subsides with continued use of LDN. In the experience of our former CMO, Dr. Sajad Zalzala, some patients with sleep problems actually report improved sleep when starting LDN.

On the rare occasion when sleep disturbance from LDN is more troubling, switching it to the daytime can be very helpful. For more information, see how to maximize LDN benefits.

What Are Some Other Tips for More Restful Sleep?

In addition to possible help from LDN, there are other tips well within your control to achieve better, more restful sleep. We’ve listed some of our most effective tips below:

Sleep Tip	What to Do	Why It Helps
Cut caffeine early	Stop caffeine after 12pm	Caffeine blocks adenosine, the chemical that triggers sleep onset
Consistent sleep schedule	Same bedtime and wake time every day, even on weekends	Resets circadian rhythm, the body’s internal clock
Blue light filtering	Wear filtering glasses throughout the day	Lowers stimulation and supports the body’s natural melatonin production
Daily daylight exposure	Get at least 30 minutes of bright daylight each day	Keeps circadian rhythm calibrated and supports a healthy hormonal response
Limit electronics near bed	Place devices far from bed; use Airplane mode if possible	Reduces EMF exposure, which may add physical stress to the body

If better sleep is part of your healthspan goals, learn more about LDN and connect with an AgelessRx provider to discuss whether it may be a fit.

Frequently Asked Questions

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Note: The above statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.