Septanest is a local anesthetic commonly used in dental procedures to numb a specific area of the mouth, ensuring patients experience minimal discomfort during treatment. It contains articaine hydrochloride as its active ingredient, which works by temporarily blocking nerve signals in the body, preventing pain sensations from reaching the brain. Septanest may also include epinephrine, a vasoconstrictor that helps prolong the anesthetic effect and reduce bleeding in the treated area. This medication is typically administered through an injection directly into the gum or inner cheek, and its effects can last for a few hours, allowing dentists to perform various dental procedures, such as fillings, extractions, or root canals, with improved patient comfort.