Search for articles or Rx savings
Key takeaways
Lantus Solostar is the brand name of a long-acting basal insulin in a prefilled injection pen.
Without insurance or other prescription assistance programs, Lantus Solostar can cost an average of $84 per 3 mL of 100 units/mL pen.
Many commercial insurance and Medicare plans cover Lantus Solostar, but coverage and copays vary depending on the plan.
There are ways to reduce the cost, including switching to other insulin glargine products, using SingleCare discount coupons, and comparing pharmacy prices to find the lowest price.
Lantus Solostar (insulin glargine) is a brand-name long-acting insulin pen prescribed to manage blood sugar in adults and children with Type 1 diabetes and adults with Type 2 diabetes. Lantus costs about $84 per 300-unit prefilled injection pen, but monthly costs depend on the dosage prescribed. People without insurance have several options to reduce the price significantly.
How much does Lantus Solostar cost without insurance?
The average retail price of Lantus SoloStar without insurance is $84 for one 3 mL of 100 units/mL pen, which totals 300 units of long-acting insulin. At a dosage of ten units per day, that’s about a month’s worth of medication. Long-acting insulin is typically administered once a day, and the number of units injected varies according to the patient’s individual need to manage blood sugar levels. But at the maximum dosage of 80 units per day, Lantus SoloStar’s cost is closer to $680 per month. The annual cost of Lantus SoloStar may range from $1,000 to nearly $8,000 for individuals paying completely out of pocket, depending on their daily dose.
For patients using long-acting insulin, there are limited options to save money. The only options are insulin glargine, insulin glargine biosimilars, and insulin degludec. Patients can switch to a generic long-acting insulin, but the savings may not be significant.
Insulin glargine biosimilars are the lowest-priced long-acting insulin products. These are insulin glargine drugs that are not completely identical to insulin glargine, but the differences do not alter their effectiveness or side effects. They are interchangeable with insulin glargine. One generic biosimilar, Semglee (insulin glargine-ygfn), has a retail price about 50% lower than either Lantus or insulin glargine SoloStar. The lowest-price insulin glargine biosimilar is Rezvoglar (insulin glargine-aglr). Before switching to another insulin glargine injection, ask your healthcare provider for medical advice.
| Compare Lantus Solostar prices to related drugs | |||
|---|---|---|---|
| Drug name | Price without insurance of brand-name drug | SingleCare price | Savings options |
| Lantus Solostar (insulin glargine) | $84 per 1, 1.5 mL of 300 units/mL solution pen injector | $21 for 1, 1.5 mL of 300 units/mL of generic Lantus Solostar pen at Kroger | See latest prices |
| Generic Lantus SoloStar (insulin glargine SoloStar) | $87 per 1, 3 mL of 100 units/mL solution pen injector | $60 for 1, 3 mL of 100 units/mL of generic Lantus Solostar pen at Kroger | See latest prices |
| Rezvoglar KwikPen (insulin glargine-aglr) | $29 per 1, 3 mL of 100 units/mL pen | $20 for 1, 3 mL of 100 units/mL pen of brand-name Rezvoglar KwikPen at Kroger | See latest prices |
| Semglee (insulin glargine-ygfn) | $110 per 1, 3 mL of 100 units/mL pen | $20 for 1, 3 mL of 100 units/mL pen of generic Semglee at Kroger | See latest prices |
| Tresiba Flextouch
(insulin degludec) |
$144 per 1, 3 mL pen-injector of 100 units/mL solution | $37 per 1, 3 mL pen-injector of 100 units/mL solution of brand-name Tresiba Flextouch at Kroger | See latest prices |
| Basaglar KwikPen (insulin glargine) | $94 per 1, 3 mL of 100 units/mL pen | $54 for 1, 3 mL of 100 units/mL brand-name Basaglar KwikPen at Kroger | See latest prices |
| Toujeo Solostar (insulin glargine) | $177 per 1, 1.5 mL of 300 units/mL solution pen injector | $58 per 1, 1.5 mL of 300 units/mL solution pen injector
of brand-name Toujeo Solostar at Kroger |
See latest prices |
Prescription drug prices often change. These are the most accurate medication prices available at the time of publication in ZIP code 23666, as of November 4, 2025. The listed price, without insurance, refers to the price of brand-name drugs (unless otherwise specified). The listed SingleCare price references the price of generic drugs if available. Click the link under “Savings options” to see the latest drug prices.
Is Lantus Solostar covered by insurance?
Most commercial health insurance plans cover the injectable Lantus SoloStar. About 70% of Medicare patients are covered. Medicaid coverage varies by state. Some insurance plans place Lantus SoloStar in higher copay tiers, so the out-of-pocket cost varies significantly between different insurance plans. However, both Medicare Part B and Medicare Part D place a $35 cap on a one-month supply of any covered insulin.
How to get Lantus Solostar without insurance
Insulin therapy can be financially challenging without insurance coverage, but it is a necessary and life-saving treatment. Sanofi offers a copay card/patient assistance program for eligible patients, which can help cap the cost of a 30-day supply of Sanofi insulins. However, not everyone can meet the purchasing and eligibility requirements. Fortunately, there are more certain ways to save money on needed insulin treatment even without insurance. The first place to start is with a SingleCare savings card.
1. Get free Lantus Solostar coupons
After getting a SingleCare discount card for free, you can access SingleCare coupons to get Lantus Solostar for as little as $21 per 3 mL of 100 unit/mL pen. You can use SingleCare’s savings program even if you have insurance or Medicare, but you can’t use the coupons on top of your coverage. When using SingleCare discounts, make sure to sign up for SingleCare’s bonus savings loyalty program. Each time you get a SingleCare discount, you earn additional savings on future drug or refill purchases.
2. Switch to other long-acting insulins
FDA-approved insulin glargine biosimilars are the lowest-cost alternatives to Lantus SoloStar treatment. For uninsured patients, all of these can be purchased at a significant discount using SingleCare discount coupons. For insured patients, some plans may cover one medication more than another, and this can change from year to year. Before switching insulin products, ask a healthcare professional for medical advice.
RELATED: Lantus Solostar alternatives
3. Compare prices
Every pharmacy sets its own rates, so if the prices at your usual pharmacy seem high, you might be able to find lower prices by checking with others nearby. A quick call to a few different pharmacies could result in significant savings over time.
Lea este artículo en español aquí.
- Lantus, Sanofi
- Lantus HCP, Sanofi