Low Dose Naltrexone, a synthetic drug popular for its anti-opioid action, is also getting famous for its extensive usage and mode of action at opioid and non-opioid receptors. At present, Naltrexone is a licensed drug that can be used to treat alcoholism and opioid addiction at a specific dose of 50 mg. But it is also an emerging choice of medicine that can be utilized as an immune modulator, and for suppressing tumor growths, specifically at lower doses of around 3-4.5 mg. These low doses of Naltrexone are depicted as low-dose Naltrexone or LDN.