Read more "From 2010 to 2015, the price of Lantus (made by Sanofi) went up by 168 percent; the price of Levemir (made by Novo Nordisk) rose by 169 percent; and the price of Humulin R U-500 (made by Eli Lilly) soared by 325 percent," Lipska wrote in February for the New York Times.