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

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.

How to pay the least

Given by your care team

Billed by the clinic

Prolastin-C Liquid is given by a doctor or nurse, not picked up at a pharmacy.

Ask your care team or your plan what you’d pay before your visit.

Compare every option

Brand nameProlastin-C Liquid

Authorized genericalpha1-proteinase inhibitor (human)

Regular genericalpha1-proteinase inhibitor (human)

What you’d pay

Cash priceAsk the pharmacy

Not soldThere isn’t one

Not soldAsk the pharmacy

Same as the brand?

The original

–

Brand nameThe maker’s card

PROLASTIN DIRECT Assist 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.

Or call 1-888-474-3657.

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 November 2, 2026. Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.

Authorized genericNot sold

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

See the brand name →

Regular genericNot sold

This medicine 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

Emphysema from inherited alpha-1 antitrypsin deficiency

What the FDA label says

PROLASTIN®-C LIQUID is an Alpha1-Proteinase Inhibitor (Human) (Alpha1-PI) indicated for chronic augmentation and maintenance therapy in adults with clinical evidence of emphysema due to severe hereditary deficiency of Alpha1-PI (alpha1-antitrypsin deficiency).

Limitations of Use:

The effect of augmentation therapy with any Alpha1-PI, including PROLASTIN-C LIQUID, on pulmonary exacerbations and on the progression of emphysema in Alpha1-PI deficiency has not been conclusively demonstrated in randomized, controlled clinical trials.
Clinical data demonstrating the long-term effects of chronic augmentation or maintenance therapy with PROLASTIN-C LIQUID are not available.
PROLASTIN-C LIQUID is not indicated as therapy for lung disease in patients in whom severe Alpha1-PI deficiency has not been established.

Source: the FDA label for Prolastin-C Liquid (GRIFOLS USA, LLC), July 5, 2022. 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 the clinic’s billing office.
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/prolastin-c-liquid/