The sale of Walgreens home infusion business to a private equity firm will give Walgreens the chance to double down on the growing market. Announced Jan. 20, Madison Dearborn Partners, a Chicago-based private equity firm, will acquire a 51% majority stake in Walgreens Infusion Services. The firm will take the company private, according to a release. Walgreens entered the home infusion space when it acquired OptionCare for $850 million in 2007. It traded its long-term care pharmacy business for OmniCare’s home infusion business in 2010, making it the largest provider in the space.