1- Lipitor- 141 billion
The best-selling product ever is a medicine. It’s called Lipitor and is prescribed to lower LDL or bad cholesterol – in other words, it’s made to prevent a heart disease.
This medicine is classified as a statin. What’s a statin? It’s a class of drug used to reduce the risk of heart-related ailments.
It had over 141 billion items sold. But Lipitor sales have stuck in recent years after its U.S. patent expired in 2011.
When Lipitor lost its patent protection, other cheap similar drugs have surfaced the market.
In 2013, Lipitor sales totaled $2.3 billion, down from $9.6 billion in 2011 according to Pfizer’s 2013 annual report.
Still, since its introduction in 1997, no other drug came close to Lipitor’s commercial success.