Low dose naltrexone (LDN) is a custom‑compounded version of naltrexone, prepared at much lower strengths ranging from 1.5 mg to 4.5 mg.
LDN is off‑label, meaning it is used for conditions not officially listed on the FDA label. Many patients take LDN to help manage weight, chronic pain, fibromyalgia, autoimmune diseases, and certain mental health concerns.
You may have tried other treatments without success. LDN works differently, and for many, it has opened a new path forward.
At low doses, naltrexone briefly blocks opioid receptors in the body. This temporary block stimulates the production of endorphins (natural pain‑relieving and inflammation‑cooling molecules).
Your body responds by producing up to three times its normal level of endorphins, which help reduce inflammation, calm overactive immune responses, and ease pain.
Most patients begin LDN at 1.5 mg once daily. After one month, the dose typically increases to 3 mg.
At two months, the dose often reaches 4.5 mg, which is the standard maintenance level for many people.
Your doctor and pharmacist will work with you to adjust the dose based on how you feel and how well you tolerate the medication.
Some patients find a lower or higher dose works better for them.
LDN is not an overnight fix.
Most patients start to feel improvement between 2 and 8 weeks. Some notice subtle changes earlier, such as better sleep, less morning stiffness, or improved mood.
Others take the full two months or longer to see meaningful results.
Patience pays off.
Many people who stick with LDN find that the benefits grow over time.
Common early side effects may include:
These usually fade within 1–2 weeks as your body gets used to the medication. We may adjust your starting dose or suggest taking LDN at a different time of day if side effects become too bothersome.
LDN is not addictive. There is no risk of dependence, and you will not experience withdrawal symptoms if you stop taking it.
LDN is available in several forms, each with its own instructions. Follow the specific directions on your prescription label.
Below are general guidelines:
General reminder for all forms:
Always wash your hands before handling your medication. If you miss a dose, never take extra to “catch up.” When in doubt, contact your pharmacist.
You should reach out to your healthcare team if you experience:
Have Questions? We’re a Message Away.
The fastest way to reach our pharmacy team is through the free RxLocal app.
Whether you need a refill, have a question about side effects, or just want to double‑check how to take your LDN, we’re here to help.
Download the app today and message us anytime.
The holidays bring us joy, but they also bring us more prescriptions to fill and ship. Our pharmacy continues to work diligently, but an increase in demand may result in slightly longer processing times.
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ClearSpring Team