Closan pharmaceutical products

Closan is a brand name typically associated with veterinary or human pharmaceutical products, most notably Closantel, an anthelmintic agent used to treat parasitic worm infections. The brand and its variants are produced by several pharmaceutical manufacturers worldwide depending on the specific registration in a given market.

Historically, the development of Closantel molecules is linked to Janssen Pharmaceutica, a company founded in Belgium. Today, products under the name Closan or containing Closantel are manufactured in multiple locations, including India, China, and various European countries, to serve local livestock and medical markets. Large multinational veterinary health companies and generic pharmaceutical manufacturers often manage the distribution and local production rights.