Walmart's medications are securely packaged in tamper-evident packaging, and customers can track their orders in real time through the Walmart app or website. Walmart has expanded its delivery capabilities, integrating prescription medications and general merchandise into one streamlined single order for delivery.

The new service is already available in six states, and gives the supermarket giant a leg up against struggling drugstores like CVS and Walgreens.

Walmart will start delivering prescriptions to U.S. homes in as little as 30 minutes, a move that’s intended to grab a bigger slice of online spending