Addiction is a functional brain disease that seriously harms human physical and mental health. It causes neuroplasticity changes in the brain regions involved in cognition, memory, reward, motivation formation, behavior decision making and drive, destroys the balance of its normal functions, and produces pathological balance relationship, which makes the addict have strong psychological dependence on addictive substances and/or certain behaviors.

The principle of SK1801 naltrexone super-long implant is to distribute naltrexone uniformly in the form of molecules in a specific release medium and deliver the drug subcutaneous. Releasing drugs slowly and evenly, occupying opioid receptors for a long time, antagonizing the euphoria caused by opioid drugs; Gradually restore the normal distribution of synapses and neurotransmitters; It will eventually relieve mental dependence and resist opioid relapse.