You can get Lantus (insulin glargine) for free through Sanofi’s patient assistance program if your household income falls below a specific threshold. Even if you don’t qualify for free insulin, several other paths can bring your cost down to $35 a month or less, depending on your insurance status. Here’s how each option works and who qualifies.
Sanofi’s Free Insulin Program
Sanofi, the company that makes Lantus, runs a program called Sanofi Patient Connection that provides the medication at no cost. To qualify, your annual household income must be at or below 400% of the federal poverty level. For 2026, that means a single person earning up to $63,840 or a family of four earning up to $132,000. You also need to be uninsured or “functionally uninsured,” meaning your plan doesn’t meaningfully cover the drug.
The application is straightforward: download the form from sanofipatientconnection.com, fill in your income and insurance details, and submit it. If approved, you receive your Lantus supply directly at no charge. This is the only option that gets you Lantus completely free, so it’s worth applying first if your income falls within range.
The $35 Monthly Cap From Sanofi
If you don’t qualify for free Lantus, Sanofi offers two savings programs that cap your cost at $35 for a 30-day supply. Which one you use depends on your insurance situation.
If you’re uninsured or not using insurance: The Insulins Valyou Savings Program lets you pay $35 per 30-day supply at the pharmacy. The catch is that you need to fill all your Sanofi insulin prescriptions together at the same time each month. You can’t use this program if you’re on Medicare, Medicaid, VA, TRICARE, or other government insurance.
If you have commercial insurance: The Sanofi Insulins Co-pay Savings Program caps your copay at $35 per 30-day supply, covering up to 10 packs per fill. People with Affordable Care Act marketplace plans can also use this card. The same government insurance exclusions apply: no Medicare, Medicaid, or similar federal or state programs.
Starting January 1, 2026, Sanofi has announced this $35 cap will be available to all Americans regardless of insurance status, including those on Medicare and commercial plans.
Medicare Already Caps Insulin at $35
If you’re on Medicare, you’re already protected by a federal cost cap. Under both Part B and Part D, a one-month supply of any covered insulin product costs no more than $35, with no deductible. A three-month supply caps at $105 total. This applies to everyone on Medicare who takes insulin, including people receiving Extra Help (the low-income subsidy). If you’re on Medicare and paying more than $35 a month for Lantus or its biosimilars, something is wrong with how your claim is being processed, and it’s worth calling your plan.
Cheaper Biosimilar Alternatives
Lantus has two FDA-approved biosimilars that contain the same type of insulin and work the same way in your body, but cost significantly less.
Semglee became the first interchangeable biosimilar for Lantus in 2021. “Interchangeable” means your pharmacist can substitute it for Lantus without needing a new prescription from your doctor, just like switching from a brand-name drug to a generic. A five-pack of Semglee pens has an average wholesale price around $178, compared to about $510 for the same quantity of Lantus pens. A single vial runs roughly $118 versus $340 for Lantus.
Rezvoglar is another biosimilar approved in late 2021, though it doesn’t have interchangeable status. That means your doctor needs to write a prescription specifically for Rezvoglar. It’s still a lower-cost option worth asking about. If you’re currently paying out of pocket for Lantus and don’t qualify for an assistance program, switching to Semglee cuts your cost by roughly 65% at the pharmacy counter.
Community Health Centers and 340B Pricing
Federally Qualified Health Centers (FQHCs) participate in a federal program called 340B, which requires drug manufacturers to sell medications to these clinics at deeply discounted prices. The clinics then pass those savings on to patients. If your household income is at or below 200% of the federal poverty level and you have no insurance, a high deductible, or high cost-sharing for insulin, these centers are required to make insulin available to you at or below the 340B discounted price plus a small administrative fee.
The size of that fee varies by clinic since there’s no set federal limit, but it’s meant to be minimal. To find a community health center near you, search on the Health Resources and Services Administration website (findahealthcenter.hrsa.gov). You don’t need a referral. Walk-in availability varies by location, but most centers accept new patients and offer sliding-scale fees based on income for all their services, not just prescriptions.
State Pharmaceutical Assistance Programs
Nearly every state runs some form of pharmaceutical assistance program, though coverage varies widely. At least 48 states have a program on the books. Some are broad enough to cover insulin for low-income residents, while others focus narrowly on specific conditions like HIV or on specific populations like seniors.
A few examples of programs more likely to help with insulin costs:
- Indiana (HoosierRx): Covers prescription costs for qualifying residents
- Maine (Drugs for the Elderly and Disabled): Assists older adults and people with disabilities
- New York (EPIC): Pharmaceutical coverage for seniors
- Pennsylvania (PACE/PACENET): Covers prescriptions for older residents at different income tiers
- Nevada (Disability Rx and SRx): Two separate programs for different populations
- New Jersey (PAAD): Pharmaceutical assistance for aged and disabled residents
Most state programs that broadly cover prescriptions focus on seniors or people with disabilities. To check what your state offers, search your state’s name along with “pharmaceutical assistance program” or visit the National Conference of State Legislatures database, which tracks every active program.
How to Stack These Options
Your best path depends on your insurance and income. If you’re uninsured and earn under the 400% poverty threshold, apply for Sanofi Patient Connection first since that’s truly free Lantus. While you wait for approval, use the Valyou Savings Program to pay $35 at the pharmacy so you don’t go without insulin.
If you have commercial insurance but your copay is high, activate the Co-pay Savings card to lock in $35 a month. If you’re on Medicare, you’re already capped at $35 by law. And regardless of your situation, ask your doctor or pharmacist about switching to Semglee. If you’re paying anything out of pocket, the lower list price means lower copays, lower coinsurance, and faster progress through any deductible.
If none of these programs fit your situation, a community health center is your safety net. They serve patients regardless of insurance status and are legally obligated to offer discounted insulin to people who need it.