As deaths involving prescription drugs increase, who is supplying demand on the streets?
Melvyn Bragg examines the role of narcotics and stimulants in the history of medicine.
Sunil Shaunak argues that pharmaceuticals could, and should, build social capital.
The "scandal" that has left up to 1.5 million people addicted to prescription drugs.
Why are patients given unnecessary medical treatments? Should doctors just say no?