Data Mining for Drug Facts

In CACM:  On the use of data mining to determine drug information about drugs  Work out of Stanford University: " ... When people with high blood pressure start taking thiazide diuretics as treatment, they are warned about possible heart-related side effects, including palpitations, fainting, and even sudden death. Patients taking a certain class of antidepressants face similar risks. But what if they are taking both drugs together? Would the bad effects be more likely? No one knew.... "