Medco

Description
Medco was originally founded as National Pharmacies in 1983. In 1984, after an IPO, National Pharmacies became Medco Containment Services, LLC. In 1990, Medco Containment was acquired by Merck & Co., Inc. and became Merck-Medco. In August 2003, Medco Health Solutions, Inc. became an independent company in one of the largest domestic spin-offs at the time. It has recently been acquired by Express Scripts.