Mebendazole is a medication used to treat infections caused by certain types of worms, such as pinworms, roundworms, and hookworms. It works by preventing the worms from absorbing glucose, which is essential for their survival, ultimately leading to their death. Mebendazole is typically taken orally in the form of a tablet or chewable form. This medication is often prescribed for both children and adults and is considered safe when used as directed. Common side effects may include stomach pain, diarrhea, or nausea, but serious side effects are rare. It is important to follow a healthcare provider's instructions when using mebendazole.