Giant Pharmacy is a full-service drug store inside the Giant supermarket on Rockville Pike. It fills prescriptions, refills and processes insurance claims seven days a week. And you can do the grocery shopping while you wait. It can also transfer prescriptions from other pharmacies. You can also make use of all of its services online. Giant pharmacies offer name brand and generic drugs, flu shots, free prescription flavoring and answers any and all questions. This includes keeping your drug history on file to avoid problems with drug interactions. All major insurance drug plans accepted including Medicare Part D.