Albendazole 400 mg tablets should be taken as prescribed by your doctor, with or without food. The dosage and frequency depend on the condition being treated, determined by your doctor. Consistent adherence to the prescribed regimen is crucial for effective treatment. Common side effects may include nausea, abdominal discomfort, and headache. If these symptoms persist or worsen, inform your doctor promptly. Avoid alcohol while taking this medication. Discuss any existing medical conditions or medications with your healthcare provider before starting Albendazole treatment.