Example implementations relate to a drug dispenser. For example, a dispenser may include a processor in communication with a server accessible to a doctor capable of prescribing a drug to a patient and a pharmacist capable of providing the drug to the patient. The processor may receive instructions relating to administration of the drug to the patient. The instructions may specify a timing and an amount of the drug to be administered and an identity of the patient. The dispenser may include a timer to provide a notification based on the timing specified in the instructions and an identifier mechanism to determine an identity of a person attempting to access the drug. The processor may provide the amount of the drug based on the instructions if the identity of the person is the identity of the patient.
