Brand-name prescription

Kadcyla

ado-trastuzumab emtansine

Compare your options

Kadcyla 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	KadcylaBrand name	Authorized genericWithout the Kadcyla name	Regular genericado-trastuzumab emtansine
What pharmacies pay	Price not listed	Not sold	Not sold
Same as Kadcyla?	The original	–	–
Ways to save	Maker’s cardas little as $0 a treatmentwith commercial insurance	–	–
With insurance	Your plan’s brand co-pay	–	–

No authorized generic: There isn’t one.

No regular generic: Kadcyla 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 Genentech

Genentech Oncology Co-pay Assistance Program

With commercial insurance

as little as $0 a treatment

No insurance

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

The card pays up to $25,000 a year.

Get it on kadcyla.com

In the maker’s words

“With the Genentech Oncology® Co-pay Assistance Program, eligible patients with commercial insurance could pay as little as $0 per treatment for KADCYLA.”

From the maker’s offer on kadcyla.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 Kadcyla.
“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.