text: * Morphine is the prototype of opioid analgesics
  * Propranolol is the prototype of the beta blockers
  * Chlorpromazine is the prototypical phenothiazine antipsychotic
  * Imipramine is the prototypical tricyclic antidepressant, and itself a derivative of chlorpromazine
  * Diazepam is the prototype of the benzodiazepine
  * Diphenhydramine (Benadryl) is the prototype ethanolamine antihistamine
  * Nifedipine is the prototype dihydropyridine calcium channel blocker
  * Chloroquine is the prototypical antimalarial agent
  * Acyclovir is the prototype antiviral agent that is activated by viral thymidine kinase
  * Aspirin is the prototype NSAID