Classified according to origin Table 14.2 The Origin of Some Common drug Origin Dr Biological effect Natural product Caffeine Nerve stimulant eserpine Hypertension reducer Vincristine Anticancer agent Penicilline Antibiotic Morphine analgesic Chemical derivative of natural Prednisone Antirheumatic roduct Ampicillin Antibiotic LSD Hallucinogenic Chloroquinine Antimalarial Ethynodiol Contraceptive diacetate S onthe tic Ⅴ alium Antidepressant Benadryl Antihistamine Allobarbital Sedative-hypnoti Phencyclidine Veterinary anesthetic methadone analgesicClassified according to origin Table 14.2 The Origin of Some Common Drug Origin Drug Biological Effect Natural product Caffeine Reserpine Vincristine Penicilline Morphine Nerve stimulant Hypertension reducer Anticancer agent Antibiotic analgesic Chemical derivative of natural product Prednisone Ampicillin LSD Chloroquinine Ethynodiol diacetate Antirheumatic Antibiotic Hallucinogenic Antimalarial Contraceptive Synthetic Valium Benadryl Allobarbital Phencyclidine methadone Antidepressant Antihistamine Sedative-hypnotic Veterinary anesthetic analgesic