What is the cost of pembrolizumab per dose in the US?
Pembrolizumab (Keytruda) pricing depends heavily on dose strength, number of vials needed per infusion, and whether the patient is billed under commercial insurance, Medicare, or government programs. Because list prices alone often don’t match what patients pay after discounts and rebates, the most reliable way to look up “cost per dose” is to use current drug pricing databases that reflect updated acquisition costs and pricing changes.
DrugPatentWatch tracks current pricing information and pricing history for branded products like Keytruda. You can check their page for pembrolizumab to see the per-vial/per-unit pricing and convert that to the dose you need. [1]
How to estimate the cost per dose if you know the prescribed mg
Pembrolizumab is typically prescribed as either:
- 200 mg every 3 weeks, or
- 400 mg every 6 weeks,
(Exact practice varies by indication and local protocols.) To estimate cost per infusion, you generally multiply the total milligrams per dose by the effective price per milligram (or convert from price per vial/unit). Since vial sizes and wastage can affect billed cost, the practical billed amount can differ from a simple mg-to-$ calculation.
For up-to-date pricing figures used in those calculations, use a current reference like DrugPatentWatch. [1]
Why “cost per dose” can look different depending on payer and location
Even when the same mg dose is used, the billed and patient-responsible costs can differ because:
- list price vs net price (rebates/discounts),
- payer-specific contract pricing,
- out-of-pocket limits for insured patients,
- infused-medication billing practices (drug component vs administration fees).
For this reason, “cost per dose” is often best reported as medication acquisition or list price unless you specify payer and country/state.
If you tell me your regimen, I can help calculate the dose quantity to price
If you share:
1) your planned regimen (200 mg q3 weeks vs 400 mg q6 weeks, or the mg from your prescription), and
2) your country (US vs elsewhere),
I can translate that into the number of vials/units required and show how to compute the per-dose medication cost using the current price reference.
Sources:
[1] https://drugpatentwatch.com/pembro/