Key takeaways:
As of May 2026, the list price of Keytruda (pembrolizumab) and Keytruda Qlex is $12,272 when given every 3 weeks and $24,544 when given every 6 weeks.
How much you pay for Keytruda depends on factors such as your treatment schedule and duration, where you receive Keytruda, and whether you have insurance coverage.
There are ways to lower the cost of Keytruda, including manufacturer copay savings cards and patient assistance programs.
Save on related medications
Keytruda (pembrolizumab) is an immunotherapy medication used to treat a growing list of cancer types. You’ll receive Keytruda from a healthcare professional — as an intravenous (IV) infusion or as a subcutaneous (under-the-skin) injection called Keytruda Qlex (pembrolizumab / berahyaluronidase alfa).
The cost of treatment can feel overwhelming, but there are ways to navigate it. Learning how much Keytruda costs and what resources may be available can help you make better-informed decisions about your care.
How much does Keytruda cost without insurance?
As of May 2026, the list price of Keytruda and Keytruda Qlex is $12,272 when given every 3 weeks and $24,544 when given every 6 weeks. Most people don’t pay this amount, since markups, rebates, and discounts can affect the final price. And your total cost also depends on factors such as your treatment schedule and duration, as well as where you receive Keytruda.
Because Keytruda is administered in a medical setting, your overall cost may also include administration or injection fees and facility or clinic charges.
What factors affect the cost of Keytruda?
Several factors can affect how much you’ll pay for Keytruda.
Brand vs. generic availability
Keytruda and Keytruda Qlex are available only as reference (brand-name) medications. As biologics, they may eventually have highly similar versions called biosimilars (the biologic version of a generic).
At this time, there are no FDA-approved biosimilars for Keytruda or Keytruda Qlex available in the U.S.
Dosage and quantity
Your prescribed dose and treatment schedule can significantly affect your total cost. Some people receive Keytruda every 3 weeks, while others receive it every 6 weeks. Treatment duration also varies depending on the type of cancer being treated and how you respond to the treatment.
Location
Where you receive Keytruda can affect how much you pay. Hospital outpatient centers may charge more than independent infusion centers or clinics. Costs can also vary depending on your geographic region.
Insurance coverage
Insurance coverage can make a major difference in your out-of-pocket costs. Depending on your plan, you may still be responsible for deductibles, coinsurance, or copays. Medicare, Medicaid, and commercial insurance plans may all handle coverage differently.
It’s also important to note that Keytruda is often billed under the medical benefit, though some plans may require billing under the pharmacy benefit. This detail can affect how much you pay. Check with your specific plan for details about how Keytruda is billed and covered.
What to do if Keytruda isn’t covered by your insurance
If your insurance doesn’t cover Keytruda, try these options:
Request an exception. Your healthcare team may be able to submit additional documentation showing why Keytruda is medically necessary for you.
File an appeal. If coverage is denied, you have the right to appeal your insurer’s decision.
Talk to your oncology team. Many cancer centers have financial counselors or patient navigators who can help you explore assistance programs.
Check financial assistance programs. Keytruda’s manufacturer and independent charitable foundations offer programs that help eligible people access Keytruda at no charge.
Ask about alternative treatment sites. Receiving treatment at a lower-cost infusion center may reduce some expenses.
Ways to save on Keytruda
Without insurance, Keytruda costs thousands of dollars per infusion or injection. But there are several ways to help reduce your out-of-pocket costs. Here are four to consider.
1. See if you qualify for a copay savings card
If you have commercial insurance that covers Keytruda, you may qualify for the manufacturer’s copay savings card. Through the Merck Co-Pay Assistance Program, you could pay as little as $25 per infusion or injection, with a maximum benefit of $25,000.
To be eligible, you must:
Live in the U.S. (including Puerto Rico)
Have commercial insurance that covers Keytruda
Have a valid prescription for Keytruda or Keytruda Qlex for an FDA-approved use
Not have government-funded insurance, such as Medicare or Medicaid
You and your prescriber will both need to complete the enrollment form, which can be submitted electronically or printed and mailed or faxed. You can also call 1-855-257-3932 to request a form.
2. Check if you’re eligible for a patient assistance program
If you don’t have insurance, or if your plan doesn’t cover Keytruda, you may be eligible for a patient assistance program. For example, the Merck Patient Assistance Program offers the medication at no charge for eligible people.
To qualify, you generally must:
Be a resident of the U.S. or a U.S. territory
Have a valid prescription for Keytruda or Keytruda Qlex from a healthcare professional licensed in the U.S.
Be uninsured, or have insurance that doesn’t cover Keytruda
Meet certain income requirements
As with the copay assistance program, you and your prescriber will need to complete the Merck Access Program enrollment form. You can complete the form online, download a copy to mail or fax, or call 1-855-257-3932 to request a form.
There are also patient assistance programs through independent charitable foundations. These organizations may help cover out-of-pocket costs related to cancer treatment. Eligibility and funding availability can vary throughout the year. Examples include:
3. Tap into your HSA, FSA, or HRA
If you have a health savings account (HSA), flexible spending account (FSA), or health reimbursement arrangement (HRA), you may be able to use those tax-advantaged funds to help pay for eligible Keytruda treatment costs.
Keep in mind that these funds may only be available for a limited time. For example, FSA funds are often “use it or lose it,” meaning they must be used by a deadline, while HSA funds don’t expire and can be used at any time. If you have an HRA, check with your employer about its rules.
4. Ask about payment plans or financial support
Many hospitals, infusion centers, and cancer clinics offer payment plans or financial assistance programs to help make treatment costs more manageable. Depending on your situation, you may be able to spread out payments over time or qualify for reduced-cost care.
Ask to speak with a financial counselor, billing specialist, or social worker at your treatment center. They may be able to help you estimate costs, identify assistance programs, or negotiate medical bills.
The bottom line
As of May 2026, the list price of Keytruda (pembrolizumab) and Keytruda Qlex is $12,272 when given every 3 weeks and $24,544 when given every 6 weeks. How much you pay depends on factors such as where you receive Keytruda, your treatment schedule and duration, and your insurance coverage.
Manufacturer copay savings cards, patient assistance programs, and other financial support tools are available to help make treatment more affordable. Talk to your cancer care team about your options.
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References
CancerCare. (2026). CancerCare Co-Payment Assistance Foundation.
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Keytruda.com. (n.d.). Cost, insurance & financial help for Keytruda. Merck.
Keytruda.com. (n.d.). Cost, insurance & financial help for Keytruda Qlex. Merck.
MerckHelps. (2026). The Merck Patient Assistance Program helps those in need. Merck.
Merck Sharp & Dohme. (2026). Keytruda- pembrolizumab injection, powder, lyophilized, for solution. DailyMed.
The Merck Access Program. (2026). Independent co-pay assistance foundations. Merck.
The Merck Access Program. (2026). Learn more about enrollment: The Merck Access Program. Merck.
The Merck Access Program. (2026). The Merck Co-Pay Assistance Program. Merck.
Patient Access Network Foundation. (2026). We’re here to help with your out-of-pocket costs, and that’s not changing.
Patient Advocate Foundation. (n.d.). We guide patients through complex healthcare challenges.
The Assistance Fund. (2026). Providing people with peace of mind.












