Specialty Drug
AZTREONAM is a monobactam antibiotic. It is used to improve breathing symptoms in patients with cystic fibrosis (CF) with certain bacteria in their lungs. It will not work for colds, flu, or other viral infections. The lowest GoodRx price for the most common version of Cayston is around $8,492.40, 24% off the average retail price of $11,244.63. Compare monobactam antibiotics.

Cayston Medicare Coverage


Does Medicare cover Cayston?

90% of Medicare Part D and Medicare Advantage plans cover this drug.

How much is my Cayston co-pay with Medicare?

It depends. Which coverage stage are you in? Click on a tab below…

Donut Hole
Post-Donut Hole
Co-Pay Range
$2337 – $9325
In the Deductible co-pay stage, you are responsible for the full cost of your prescriptions. Your Medicare deductible cannot exceed $360 in 2016.
Co-Pay Range
$2057 – $9333
In the Typical co-pay stage, your deductible has been satisfied, and Medicare pays the majority of your drug costs.
Co-Pay Range
$3703 – $4400
In the Donut Hole (also called the Coverage Gap) stage, you’ll pay more for your prescriptions. In 2016, the Donut Hole begins once you’ve spent $3,310 in one year.
Co-Pay Range
$411 – $467
In the Post-Donut Hole (also called Catastrophic Coverage) stage, Medicare will cover most of your drug costs. In 2016, this stage begins once you have spent $4,850.
Want an exact price for your co-pay?

Ways to Save on Cayston

Here are some ways that may lower the cost of your Cayston prescription.

Patient Assistance Program
Call Cayston Access Program to get more information on how they can financially assist you.
Patient Assistance Program
Save at least $5 per month on your prescription.

Find Your Cayston Medicare Co-Pay

Here are average co-pays for some of the most popular Medicare plans. Be sure to add your plan to see your specific co-pay. If a price is shown in red, GoodRx has found discount prices that are lower than your Medicare co-pay.

Average Co-Pay for 1 28-day supply (84 vials) of Cayston 75mg/vial

Medicare Plan Name Average Co-Pay
AARP MedicareRx Preferred (PDP) $3610
AARP MedicareRx Saver Plus (PDP) $2272
AARP MedicareRx Walgreens (PDP) $2208
Aetna Medicare Rx Saver (PDP) $2398
Anthem Blue Cross MedicareRx Plus (PDP) $2868
Anthem MediBlue Essential (HMO) $2694
Cigna-HealthSpring Preferred (HMO) $2590
EnvisionRxPlus (PDP) $2236
Express Scripts Medicare - Choice (PDP) $2240
Express Scripts Medicare - Value (PDP) $2155
First Health Part D Value Plus (PDP) $3002
Humana Enhanced (PDP) $2793
Humana Preferred Rx Plan (PDP) $2116
Humana Walmart Rx Plan (PDP) $2116
Kaiser Permanente Medicare Plus Std w/Part D (AB) (Cost) $2337
MedicareBlue Rx Standard (PDP) $2330
SilverScript Plus (PDP) $3039
Symphonix Value Rx (PDP) $2272
TexanPlus Classic (HMO) $7740
WellCare Classic (PDP) $2343
Don't see your Medicare plan above?

Find and configure your plan to see exact co-pay prices for your meds.

Cayston Medicare Formulary Information & Restrictions

Are there any restrictions on coverage?

Some Medicare plans have restrictions on coverage of Cayston that may include:

Prior Authorization

Most Medicare plans will require you to obtain their authorization before they will provide coverage for this prescription. You’ll need to contact your plan and they may require you to have your health care provider fill out paperwork indicating why you need this prescription. If you do not receive authorization or don’t want to go through this process, you may want to consider using a GoodRx discount instead of Medicare to find the best price for this prescription.

What drug tier is Cayston typically on?

Tier 5

Medicare plans typically list Cayston in Tier 5 of their formulary. Tier 5 drugs are usually non-preferred brand-name drugs. Tier 5 drugs cost more than Tier 1, 2, 3 and 4 drugs.

Does your plan have restrictions?

See discount prices that can save you money when your Medicare plan doesn't work for you.

Medicare prices are provided by the Centers for Medicare and Medicaid Services (CMS). They are accurate as-of July 2018 and the information may be updated. If you encounter any issues, please let us know.
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