ProPublica

Citing the risk of liver damage from overdosing on the popular pain medication, Health Canada announced it will review changes to labels, the creation of an educational awareness campaign and possible revisions to dosage recommendations.

The dangers of the widely used Coumadin have drawn relatively little scrutiny, perhaps because the drug has clear benefits. Still, improper use has caused some patients incalculable suffering and, in some cases, greatly hastened deaths.

Recent federal research suggests that a significant percentage of asthma patients begin using Advair inappropriately, taking on what the drug’s label describes as an increased “risk of asthma-related death” from one of its two ingredients.