Shares of drug retailers such as CVS Health Corp (NYSE: CVS) and Walgreens Boots Alliance Inc. (NASDAQ: WBA) fell in the mid-day trading Tuesday following the news.

Consumers in Chicago, Atlanta and Denver can now get health and wellness and convenience products from Walgreens delivered to them via DoorDash.

Shares of Walgreens fell 8% and have plunged nearly 35% this year.