Bausch Health Cos., Inc. engages in the development, manufacture and market of a range of branded, generic and branded generic pharmaceuticals, medical devices and over-the-counter products. The company is headquartered in Laval, Quebec and currently employs 20,700 full-time employees. The Salix segment includes sales in the U.S. of GI products. The International segment includes sales of Bausch + Lomb products and Solta Medical aesthetic medical devices, outside the U.S. and Puerto Rico of branded pharmaceutical products, branded generic pharmaceutical products and OTC products. The Solta Medical segment includes global sales of Solta Medical aesthetic medical devices. The Diversified segment includes sales in the U.S. of pharmaceutical products in the areas of neurology and certain other therapeutic classes, dermatology products, generic pharmaceutical products and dentistry products. The Bausch + Lomb segment includes global sales of Bausch + Lomb Vision Care, Surgical and Pharmaceuticals products. Its drug candidate, Larsucosterol binds to and inhibits the activity of DNA methyltransferases, epigenetic enzymes that are elevated and associated with hypermethylation found in AH patients.