Brand-name prescription

Gamunex-C

immune globulin (human)

Compare your options

Compare	Gamunex-CBrand name	Authorized genericWithout the Gamunex-C name	Regular genericimmune globulin (human)
What pharmacies pay	Price not listed	Not sold	Not sold
Same as Gamunex-C?	The original	–	–
Ways to save	Maker’s cardas little as $0with commercial insurance	–	–
With insurance	Your plan’s brand co-pay	–	–

No authorized generic: There isn’t one.

No regular generic: 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.

Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.

The maker’s savings card

Rx Maker’s savings card Grifols

Gamunex Connexions Copay Assistance Program

With commercial insurance

as little as $0

No insurance

This card needs commercial insurance. The maker doesn’t list a cash price on this page.

The card pays up to $10,000 a year.

Get it on gamunex-c.com

In the maker’s words

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

From the maker’s offer on gamunex-c.com, checked September 25, 2026. What you pay depends on your plan. Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.

Before you use a discount card

Discount cards like GoodRx take money off the pharmacy’s cash price. For a brand-name drug, that price is often still high. With commercial insurance, Gamunex-C’s own card may bring it to as little as $0.

Look up the discount-card price, then compare it with this estimate. You can use a maker’s card or a discount card, but usually not both on the same fill.

Good to know

There’s no authorized generic of Gamunex-C.
“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.