Albendazole is a broad-spectrum antiparasitic medication used in humans to treat a variety of worm infections. It works by blocking the parasite's ability to absorb nutrients, causing it to weaken and die. Doctors commonly prescribe albendazole for intestinal worm infections such as roundworms, hookworms, whipworms, and pinworms. It is also used for more serious parasitic diseases, including hydatid disease (caused by Echinococcus tapeworms) and neurocysticercosis, a condition where tapeworm larvae infect the brain. Albendazole 400 mg  is usually taken by mouth in tablet form. The dosage and length of treatment depend on the specific infection, the patient's age, and overall health. For some mild intestinal infections, a single dose may be enough, while more severe or tissue-involving infections may require longer treatment under medical supervision. Doctors may advise taking the tablet with food to improve absorption. Side effects are generally mild and may include stomach discomfort, nausea, headache, or dizziness. Long-term or high-dose treatment may require periodic blood tests to monitor liver function and blood cell counts. Albendazole should only be used under the guidance of a healthcare professional, especially in pregnant individuals or those with liver disease, to ensure safety and effectiveness.