Eli Lilly is announcing 70-percent price cuts on its most commonly prescribed insulin. The move comes as Eli Lilly and other insulin makers face ongoing criticism about high prices driving some diabetics to ration the life-saving drug. Starting in October, the price of a Humalog 100 units vial will be slashed to 66-dollars, down from 274. Lilly also says starting in May, it'll cap out-of-pocket insulin costs at 35-dollars a month for people with insurance.