<unk>  (INN, also known as oxethazaine) is a potent local anesthetic. It is administered orally (usually in combination with an antacid) for the relief of pain associated with peptic ulcer disease or esophagitis. It is also used topically in the management of hemorrhoid pain. Oral<unk>  preparations are available in several countries, including India, South Africa, Japan and Brazil, but not the United States.
Unlike most local anesthetics,<unk>  is active even in strongly acidic conditions.
Oxetacaine
Chloroprocaine
Procaine
Tetracaine 
Proparacaine
Proxymetacaine
Oxybuprocaine
Mepivacaine