Benzocaine is a local anesthetic used in topical and oral products. Learn about its risks, FDA warnings and lawsuits tied to serious side effects. Benzocaine is a common topical anesthetic found in many OTC products. Learn how it works, how long it lasts, and key safety concerns to know before using it. Benzocaine - cas 94-09-7, synthesis, structure, density, melting point, boiling point Benzocaine topical side effects Benzocaine topical used in the mouth may cause a condition in which the oxygen in your body tissues can become dangerously low. This is a potentially fatal condition called methemoglobinemia (met-HEEM-oh glo-bin-EE-mee-a). This condition may occur after only one use of benzocaine or after several uses. Benzocaine is a prescription medication used as a local anesthetic to reduce pain or discomfort associated with bee stings, minor burns, sunburn, insect bites, mouth or gum irritation or pain, hemorrhoids, dental pain, boils and premature ejaculation. Description Benzocaine is used to relieve pain and irritation caused by sore throat, sore mouth, or canker sores. This medicine is available without a prescription. Your doctor may have special instructions on the proper use and dose for your medical problem. Benzocaine, sold under the brand name Orajel amongst others, is a local anesthetic, belonging to the amino ester drug class, commonly used as a topical painkiller or in cough drops. It is the active ingredient in many over-the-counter anesthetic ointments such as products for oral ulcers. It is combined with antipyrine to form A/B ear drops. Description Benzocaine is used to relieve pain and itching caused by conditions such as sunburn or other minor burns, insect bites or stings, poison ivy, poison oak, poison sumac, minor cuts, or scratches. Benzocaine belongs to a group of medicines known as topical local anesthetics. It deadens the nerve endings in the skin. Benzocaine | C9H11NO2 | CID 2337 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Get clear safety guidance for Benzocaine (Oral, Oromucosal), including warnings, precautions, when to seek medical assistance, and how to use it correctly.