Low-Dose Naltrexone 3mg Capsules
Immune Modulation and Inflammation Support
Low Dose Naltrexone (LDN) is a compounded formulation of naltrexone at significantly lower doses than those used for addiction treatment. At these low doses, naltrexone is believed to work by briefly blocking opioid receptors, prompting the body to increase its natural endorphin production and modulate immune system function. LDN is being studied and used by practitioners for a wide range of conditions associated with immune dysregulation, chronic inflammation, and neurological conditions. It has been explored in the context of autoimmune diseases, fibromyalgia, chronic fatigue, and Crohn's disease, among others. AllMedRx compounds LDN in 1.5mg, 3mg, and 4.5mg capsules to allow for precise dose titration as directed by your healthcare provider.
This product requires a valid prescription from a licensed healthcare provider. LDN is a compounded medication not FDA-approved at these doses.
Custom Compounded Medications, Made Just for You

Overview
Click through below to see the questions we’re asked most about this medication.
How do I know the right dose for me?
Your provider chooses the strength when writing your prescription. We compound precisely what is prescribed.
How does 3mg compare to the other strengths?
We offer 1.5mg, 3mg, and 4.5mg. Your provider decides which one is right for you.
Why is LDN compounded rather than bought off the shelf?
These low strengths are not made commercially, so they are compounded individually.
Is a prescription required?
Yes. This is a prescription-only medication, compounded only from a valid prescription.
How many capsules come in a prescription?
A standard fill is 30 capsules unless your provider directs otherwise.
Your personalized pharmacy care starts now
Tell us who you are and we’ll get you to the right place — or call our pharmacy team directly at 561-557-1645.
I’m a Patient
Transfer, refill, and receive your compounded medications — shipped straight to your door.
I’m a Provider
Partner with a 503A compounding lab that prepares every formulation to your exact prescription.
I’m a Pharmacy
Transfer or refer compound prescriptions your pharmacy can’t prepare — your patient stays yours.
Explore Our Compounded Medications
561-557-1645
Fax (providers): 561-557-1649
Manage Your Prescription
Licensed in 31 states
USP <795> & <797>
DEA-registered
AllMedRx is a licensed 503A specialty compounding pharmacy in Palm Beach Gardens, Florida. From our state-of-the-art facility, we ship custom compounded medications straight to patients and coordinate care with their providers.
USP <795> Compliant
USP <797> Compliant
State Board of Pharmacy Licensed
DEA Registered Facility
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