LDN 0.1–4.5 mg Capsules
Naltrexone in low-strength capsules, prescribed off-label as an adjunct in some weight management plans. Dispensed only after licensed provider review.
Rx only — requires provider review
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Low Dose Naltrexone (LDN) is naltrexone supplied in capsule form at a fraction of its standard strength. At low doses it briefly modulates the body's opioid receptors, which is thought to influence appetite signaling, cravings, and aspects of the body's inflammatory response — a different mechanism than hormone-based weight medications.
It is prescribed off-label as an adjunct in some weight management plans, often for patients whose providers want to address cravings or reward-driven eating patterns alongside other elements of a program.
Because it interacts with opioid receptors, LDN is used strictly under medical supervision, and your provider will review your full medication history before prescribing. OpenDoseRx treatments are dispensed only after a licensed provider reviews your health intake and determines a prescription is appropriate for you.
How ordering works
Choose your strength
Pick the exact dose and pack size. You see the price before you commit — nothing is hidden until checkout.
A provider reviews your intake
Complete a short medical intake. An independent, licensed U.S. provider decides if it's appropriate — and if they decline, you're refunded in full.
Compounded and shipped
Approved orders are prepared by a licensed U.S. pharmacy and shipped discreetly to your door.
Low-dose naltrexone (LDN): the history and proposed mechanism
A plain-language history of naltrexone — how it was developed as an opioid antagonist — and the low-dose opioid-rebound and immune-modulation mechanisms studied in research.
How receptors, agonists, and antagonists work
A plain-language, mechanism-focused introduction to how receptors receive chemical signals and how agonists switch a pathway on while antagonists block it.
Metabolic adaptation: how the body is understood to defend its weight set point
A plain-language, mechanism-focused look at how the body is understood to defend a weight range through adaptive thermogenesis and shifts in appetite-signaling hormones.
