Amazon has launched its own online pharmacy that will allow customers to buy prescription medicines.
Amazon Prime members are eligible for free two-day delivery and discounts of up to 80% on generic medicines and 40% on prescribed brand-name drugs.
Customers need to provide some basic health information, such as whether they are pregnant, as well as date of birth, gender and insurance details.
Some questioned the wisdom of giving health data to a tech corporation.
Doctors can send prescriptions directly to Amazon Pharmacy, currently available in the US only, or patients can request a transfer from their existing retailer.
Amazon, which acquired online pharmacy Pillpack for $753m (£568) in 2018, said health data would remain separate and distinct from that on its retail site and no information would be shared with advertisers without permission, BBC reported.