Keytruda (pembrolizumab) — How to Pay Less
Oncology (Immunotherapy) · Last verified 2026-03-22
Current Pricing
Retail Price
$12,500
per month (estimated)
Copay Card Price
$25
per month with commercial insurance
Patient Assistance (PAP)
FREE
if income-eligible
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Discount CardGoodRxGet GoodRx PriceFree coupon — use at any pharmacyDiscount CardSingleCareGet SingleCare PriceFree coupon — accepted at 35,000+ pharmacies
Prices vary by pharmacy and location. These links help you compare current prices. Cost Plus Drugs does not currently carry this medication.
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Find Your Best Savings Option
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Savings Options by Insurance
🏢Commercial Insurance
- Merck Co-pay Assistance Program: Pay as little as $25/mo. (Max annual benefit: $25,000)
🏥Medicare
- 2026 Part D out-of-pocket cap: $2,000/year. Ask about Extra Help/LIS for additional savings.
💵Uninsured / Cash Pay
- Merck Patient Assistance Program: FREE medication if income is below 400% FPL. Call 1-800-727-5400.
- GoodRx, RxSaver, or Amazon Pharmacy discount cards may offer additional savings
How to Enroll
Merck Co-pay Assistance Program
- Check eligibility (commercial insurance required)
- Complete the enrollment form online (takes ~2 minutes)
- Download or print your savings card
- Present at pharmacy with your insurance card
Program valid Sept 2025 through Sept 2027.
Merck Patient Assistance Program
- Confirm income eligibility (below 400% FPL / ~$undefined/yr for individuals)
- Have your prescriber complete and sign the application
- Submit by fax, mail, or online
- Processing typically takes 1-2 weeks
IV infusion; administered in clinic. PAP covers the drug cost.
Key Facts
- Category
- Oncology (Immunotherapy)
- Generic Name
- pembrolizumab
- Dosages
- 200mg IV
- Generic Available
- No (patent expires ~2028)
Other Oncology (Immunotherapy) Medications
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