How to pay less for Keytruda
There’s no generic yet. Start with the Merck programs below, matched to how you pay.
Your options, by how you pay
| If you have | Start here |
|---|---|
| No insurance | Apply to Merck Patient Assistance Program. Free drug if you meet income limits. Also compare the maker’s cash price and TrumpRx.gov. |
| Job or marketplace plan | A copay card from the official Keytruda website can cut your copay. If your plan denies it, Merck Patient Assistance Program may still help. |
| Medicare | Given in a clinic, so it’s usually billed under Part B. A Medigap plan or a charity foundation can help with your share. Copay cards can’t be used with Medicare. |
| Medicaid | Usually covered for a small copay or none. If it’s denied, your doctor can request prior authorization or suggest a covered alternative. |
The maker’s assistance program
Merck Patient Assistance Program helps people who can’t afford Merck medications. Eligibility depends on income and coverage, and your doctor usually signs part of the application.
What to gather before you apply
- Your prescription, or your doctor’s contact details
- Proof of income: last year’s tax return or recent pay stubs
- Your insurance card, or a denial letter if coverage was refused
- Photo ID and proof of U.S. residency
Need your doctor’s help or appealing a denial? Use our free letter templates.
Common questions
Is there a generic for Keytruda?
Not as of October 2026. Keytruda (pembrolizumab) is sold only as a brand-name drug, so the maker’s programs are the main way to lower its cost.
How can I get Keytruda for free or at a lower cost?
Merck Patient Assistance Program may provide it free if you meet income limits; your doctor signs part of the application. With private insurance, a copay card from the official Keytruda website can lower your copay.
Does Medicare cover Keytruda?
Keytruda is given in a clinic, so Medicare usually covers it under Part B rather than a drug plan. Given in a clinic, so it’s usually billed under Part B. A Medigap plan or a charity foundation can help with your share. Copay cards can’t be used with Medicare.
Other cancer medications
Prices and program rules change. Check the official source before you apply. This page explains cost options only and is not medical advice.
Get a heads-up when prices change
One short email when a new generic, price cap or program could lower what you pay. No spam, no selling your address.