Anesthesin (benzocaine) is a superficial local anesthetic used to reduce pain sensitivity in the skin and mucous membranes. It belongs to the group of esters of para-aminobenzoic acid and acts by blocking nerve impulses in the area of application. Unlike novocaine, anesthesin does not penetrate deep into tissues, therefore it is not used for injections, but only in external forms – ointments, suppositories, powders, solutions.

The drug is often used for hemorrhoids, stomatitis, anal fissures, irritation of the mucous membranes, itching and as an analgesic component in combined drugs. Its action begins quickly, but has a relatively short duration – usually up to 30-60 minutes.

Anesthesin is well tolerated, but if used excessively or frequently, it can cause irritation, an allergic reaction, or a rare side effect — methemoglobinemia, a condition in which the blood’s ability to carry oxygen decreases. Because of this, it is not recommended for use in large doses, especially in children. The drug is part of many over-the-counter topical products.