Gamunex-C savings card: as little as $0 with commercial insurance

How to pay the least

Ask for the cash price

Gamunex-C

Gamunex-C 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 Gamunex-C’s cash price, and one or two other pharmacies too.
Gamunex-C’s savings card works only with insurance from a job or one you bought.

Free from the maker, if you qualify Gamunex Connexions Patient Assistance Program (PAP). Total household income less than or equal to 400% of the federal poverty level Or call 1-888-694-2686.

See if you qualify

Compare every option

Brand nameGamunex-C

Authorized genericimmune globulin (human)

Regular genericimmune globulin (human)

What you’d pay

Cash priceAsk the pharmacy

Not soldThere isn’t one

Not soldAsk the pharmacy

Same as Gamunex-C?

The original

–

Brand nameThe maker’s card

Gamunex Connexions Copay Assistance Program

Savings card from Grifols

No insuranceNeeds insuranceNo cash price listed.

Insurance · as little as $0

The card takes up to $10,000 a year off your co-pay.

In the maker’s words

“Eligible patients may pay $0 copay for GAMUNEX-C.”

From the maker’s offer on gamunex-c.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 Gamunex-C itself, from the same company, sold without the brand name, and usually for less. For now Gamunex-C is the only choice; its maker’s savings card can lower what you pay.

See the brand name →

Regular genericNot sold

Gamunex-C 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

GAMUNEX-C FlexBag is an immune globulin injection (human), 10% liquid indicated for treatment of:

Primary Humoral Immunodeficiency (PI) in patients 2 years of age and older
Idiopathic Thrombocytopenic Purpura (ITP) in adults and children
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) in adults

Source: the FDA label for Gamunex-C (GRIFOLS USA, LLC), September 28, 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/gamunex-c/