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

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

  1. Check eligibility (commercial insurance required)
  2. Complete the enrollment form online (takes ~2 minutes)
  3. Download or print your savings card
  4. Present at pharmacy with your insurance card
Enroll in Merck Co-pay Assistance Program→

Program valid Sept 2025 through Sept 2027.

Merck Patient Assistance Program

  1. Confirm income eligibility (below 400% FPL / ~$undefined/yr for individuals)
  2. Have your prescriber complete and sign the application
  3. Submit by fax, mail, or online
  4. Processing typically takes 1-2 weeks
Download application →Call 1-800-727-5400

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

Opdivo(nivolumab)
Retail: $13,000/mo

Check Your Personal Savings

Enter your insurance type and income to see exactly which programs you qualify for.

Check your savings for Keytruda→