New Plavix Warning: Lack of Effect in Many People
The anti-clotting drug Plavix will get a new "black box" label warning that normal doses don't work for 2% to 14% of patients.

How to Treat Kids' Hard-to-Control Asthma
What's the next step when a child's controller drugs fail to prevent asthma attacks? Different kids do best with different step-up treatments, an NIH-funded study finds.