Zarontin is a brand name for the medication Ethosuximide, used for the treatment of absence seizures. Synonyms for this drug include Ethonal, Petinimid, Ethosuximidum, and Celontin. These terms are often used interchangeably in medical contexts, but the active ingredient in all of them remains the same. Doctors may prescribe Zarontin or any of its synonyms depending on factors like patient preference, availability, affordability, and medical history. Whatever the name used, the drug works by reducing the abnormal brain activity that causes seizures. It is important to consult a doctor before taking any medication to ensure safety and efficacy.