BESREMi savings card: as little as $0 a month with commercial insurance

How to pay the least

Ask for the cash price

BESREMi

BESREMi is a biologic. Biologics don’t have generics, but some have biosimilars or an unbranded version from the same maker. Ask your pharmacist or prescriber whether one is sold.

Ask your pharmacy for BESREMi’s cash price, and one or two other pharmacies too.
BESREMi’s savings card works only with insurance from a job or one you bought.

Compare every option

Brand nameBESREMi

Authorized genericropeginterferon alfa-2b

Regular genericropeginterferon alfa-2b

What you’d pay

Cash priceAsk the pharmacy

Not soldThere isn’t one

Not soldAsk the pharmacy

Same as BESREMi?

The original

–

Brand nameThe maker’s card

PharmaEssentia SOURCE Copay and Coinsurance Assistance Program

Savings card from PharmaEssentia

No insuranceNeeds insuranceNo cash price listed.

Insurance · as little as $0 a month

Or call 1-800-700-5053. See the offer on pharmaessentiasource.com

In the maker’s words

“Eligible patients can receive BESREMi for as little as $0 per month.”

From the maker’s offer on pharmaessentiasource.com, checked November 2, 2026. Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.

Maker’s card or discount card?

A discount card like GoodRx lowers the pharmacy’s cash price, but for a brand-name drug that price often stays high. Compare it with the maker’s card above. You can usually use one or the other on a fill, not both.

Authorized genericNot sold

There isn’t one. An authorized generic is BESREMi itself, from the same company, sold without the brand name, and usually for less. For now BESREMi is the only choice; its maker’s savings card can lower what you pay.

See the brand name →

Regular genericNot sold

BESREMi is a biologic. Biologics don’t have generics, but some have biosimilars or an unbranded version from the same maker. Ask your pharmacist or prescriber whether one is sold. Generics usually come once the brand’s patents and exclusivity end. Until then, the maker’s savings card is the way to pay less.

See the brand name →

What it’s used for

What the FDA label says

BESREMi is an interferon alfa-2b indicated for:

The treatment of adults with essential thrombocythemia.
The treatment of adults with polycythemia vera.

Source: the FDA label for BESREMi (PharmaEssentia USA), August 25, 2026. Full label on DailyMed

Good to know

“Commercial insurance” means a plan from a job, from the marketplace, or one you buy yourself. A retiree plan that’s part of Medicare counts as Medicare. Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.
Most cards need a sign-up on the maker’s site, and many work only if your plan covers the drug. Then give the card’s details to your pharmacy.
Don’t stop or change a medicine without talking to your pharmacist or prescriber.

Prices checked November 2, 2026. Prices change: confirm with the pharmacy before you fill. drugalt.com/drug/besremi/