Lantus (
insulin glargine) is used to treat type 1 and 
type 2 diabetes. Lantus is a long-acting type of 
insulin, which works by helping to regulate blood sugar levels. The most common form of Lantus is carton of 3ml solostar pens. Lantus is also available as a vial. Lantus is also available as a biosimilar. Biosimilars are biologic drugs that are similar to the original medication with no meaningful differences in effectiveness or safety. The currently approved biosimliars for Lantus are 
rezvoglar (insulin glargine-aglr) and 
semglee (insulin glargine-yfgn). Lantus may be covered by your Medicare or insurance plan, but some pharmacy coupons or cash prices could help offset the cost.
Get Lantus for as low as $35.00, which is 92% off the average retail price of $425.01 for the most common version, by using a GoodRx coupon.