It's dangerous to share prescription medication with anyone else.
Frank has a perception medicine for migraines and his wife has a headache.
Frank wants to decide if it's okay to share the medicine.
Frank tells his wife that it's a prescription and thus sharing it could be dangerous.
Frank shares the medicine with his wife to try and help her.
Frank takes his wife to see the doctor and ask if she needs medicine for it too.
Frank runs out of medicine early and the pharmacy thinks he's either abusing or selling it.