drugs are classified in groups at five different levels. the drugs are divided into fourteen main groups ( st level), with pharmacological/therapeutic subgroups ( nd level). the rd and th levels are chemical/pharmacological/therapeutic subgroups and the th level is the chemical substance. the nd, rd...
drugs are classified in groups at five different levels. the drugs are divided into fourteen main groups ( st level), with pharmacological/therapeutic subgroups ( nd level). the rd and th levels are chemical/pharmacological/therapeutic subgroups and the th level is the chemical substance. the nd, rd...