Sanofi cuts U.S. list price of Lantus®, its most-prescribed insulin, by 78% and caps out-of-pocket Lantus costs at $35 for all patients with commercial insurance Paris, March 16, 2023. Sanofi announces that it will cut the list price of Lantus (insulin glargine injection) 100 Units/mL, its most widely prescribed insulin in the U.S., by 78 percent. The company also will establish a $35 cap on out-of-pocket costs for Lantus for all patients with commercial insurance, underscoring its...