Russ Altman: What really happens when you mix medications?
https://www.ted.com/talks/russ_altman_what_really_happens_when_you_mix_medications

If you take two different medications for two different reasons, here's a sobering thought: your doctor may not fully understand what happens when they're combined, because drug interactions are incredibly hard to study. In this fascinating and accessible talk, Russ Altman shows how doctors are studying unexpected drug interactions using a surprising resource: search engine queries.