What Naltrexone IsIt's an opioid blocker. It blocks the opioid receptors in your brain, so that you no longer feel the warm glow we associate with drinking alcohol.
Your lower brain learns that drinking alcohol is no fun, and so cravings and compulsion disappear over time. Eventually, usually between three and twelve months, the desire to drink is completely extinguished. You really and truly won't care whether or not you drink alcohol.