Brand-name prescription

Prolastin-C Liquid

alpha1-proteinase inhibitor (human)

Compare your options

Prolastin-C Liquid is given by a doctor or nurse and billed by the clinic, not a pharmacy. Your care team and your insurance decide which product you get, so ask them what you’d pay.

Compare	Prolastin-C LiquidBrand name	Authorized genericWithout the Prolastin-C Liquid name	Regular genericalpha1-proteinase inhibitor (human)
What pharmacies pay	Price not listed	Not sold	Not sold
Same as Prolastin-C Liquid?	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: Prolastin-C Liquid 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

PROLASTIN DIRECT Assist 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 prolastin.com

In the maker’s words

“PROLASTIN-C LIQUID is covered by 90%+ of health plans nationwide and those that have commercial insurance may qualify for a $0 copay through the PROLASTIN DIRECT Assist Program.”

From the maker’s offer on prolastin.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.

Good to know

There’s no authorized generic of Prolastin-C Liquid.
“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 the clinic’s billing office.
Don’t stop or change a medicine without talking to your pharmacist or prescriber.