While Eli Lilly's generic insulin has been approved since March, a significant portion of prescription claims are still for its brand-name counterpart, Humalog, according to an analysis from drug price tracker GoodRx.
Generic insulin lispro's list price is more than 65 percent cheaper than Humalog at $265 for a pack of five pens. Still, GoodRx found only 8 percent of prescription fills are for generic insulin lispro, while the majority are still for Humalog.
"This low fill count is likely a result of shortages of the medication in certain areas and spotty insurance coverage," according to GoodRx.
Comparatively, drugmaker Sanofi recently lowered the price of its insulin drug Admelog by 46 percent. It is now more affordable than even generic Humalog.
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