The Amazon Pharmacy home screen is displayed on a laptop in Brooklyn, New York, on Nov. 17, 2020.Gabby Jones | Bloomberg | Getty ImagesAmazon's effort to get customers in the two largest U.S. markets whatever they want on the day of their order has expanded to include prescription drugs.The e-commerce giant said on Tuesday that it's rolling out same-day delivery of prescription medications in New York City and the greater Los Angeles area.The prescriptions are offered via Amazon's online pharmac...