Naltrexone 50mg tablets are used primarily to help manage alcohol or opioid dependence. The medication works by blocking the effects of opioids and reducing cravings for alcohol, which helps individuals maintain sobriety. Naltrexone acts on the brain's receptors to interfere with the pleasure derived from alcohol and opioids, making these substances less rewarding. The typical dosage is one tablet taken daily, but this should be adjusted based on a doctor’s guidance. Common side effects can include nausea, headaches, and dizziness. It's crucial to use Naltrexone as part of a comprehensive treatment plan that includes counseling or support groups. Always consult a healthcare provider before starting or changing dosage.