Abstract: A user-interactive computer program provides drug advice. Drugs are grouped according to their clinical and chemical characteristics in a supporting data base. For each drug, a drug database contains detailed information on pharmacokinetics, pharmaco-dynamics and drug-specific details. In response to user interaction with areas displayed on the screen, the computer program obtains pertinent drug interaction information from the database. With the obtained information, the computer program supports display of graphical screen views. Contents of the screen views include symbols for indicating respective drugs, geometrically distinguishing lines for indicating interaction between drugs, and text descriptions of drug information. Further included in the screen views are respective symbols for indicating drug warnings for pregnant or lactating women and sportspersons. Color coding may also be employed in the screen views to indicate degree of effect or warning.