Revealing mistake: The man in the motorised wheelchair that Vic talks to is holding an ice cream cone that his dog is licking. It is a fake ice cream cone - none of the ice cream disappears when the dog licks it.
Revealing mistake: After Henry cuts the boy down from the tree, his eyes flicker when he's supposed to be dead (in the closeup of the boy's face).
Answer: This appears to be movie fiction. In real life, a pharmacist could not legally give out confidential patient information without there being a search warrant. Not abiding by confidentiality laws could result in a pharmacist facing legal issues and losing his or her license.
raywest ★