Insulin pens under recall over faulty cartridges that could break or crack

Drugmaker Novo Nordisk is recalling NovoPen Echos and NovoPen 5, both insulin delivery devices, over faulty cartridges.

The cartridges "may crack or break if exposed to certain chemicals, like some cleaning agents," the Food and Drug administration said in announcing the recall in the U.S.

Using a broken or cracked cartridge could affect the amount of insulin the pen delivers, and that could lead to high blood sugar levels, the Danish drugmaker said, but a company spokesperson also said they believed the risk was low.