MODEL RELEASED. Consultation. A general practice doctor explains a prescription to a male patient. The patient (at left) has the prescription in his hand (at lower centre). The doctor (at right) is explaining the prescription to the patient. On the wall behind the man's head (top left corner) is a sphygmomanometer used for measuring blood pressure. The computer (at upper left) can be used to store the patient's medical records. Prescriptions are instructions to pharmacists to dispense a particular drug in a specific dose. Prescription drugs are available only on the authorisation of a doctor as they may be dangerous or addictive.