Prescription is legal and valid
Confirm all required components present
Confirm prescription not expired (non-controlled valid 12 months, Schedule III-V valid 6 months, Schedule II valid 21 days)
Confirm prescription on valid prescription paper (if hard copy)
Verify medication (medication, strength, dosage form, quantity, directions, and intended use) is appropriate and safe for patient (including age, contraindications, interactions, etc.)