Naltrexone 50 mg tablets should be taken as directed by your doctor, with or without food. The dosage and frequency depend on your condition, determined by your doctor. It's essential to adhere to the prescribed regimen for optimal results. Common side effects may include nausea, vomiting, and headache. If these symptoms persist or worsen, inform your doctor. Avoid alcohol while taking this medication. Discuss any existing medical conditions or medications with your healthcare provider before starting Naltrexone treatment.