Financial Assistance for CAYSTON®

Reducing the financial barriers to CAYSTON®

When you are prescribed CAYSTON, you have a number of options to help you access your treatments.


cayston co-pay coupon program

People with private insurance pay no more than $10 per fill. There is no monthly limit, but it is capped at 7 fills per calendar year up to a maximum value of $8000 annually.


ALTERA® co-pay coupon program

People on CAYSTON may be eligible to save up to $430 when they pay a $10 co-pay for purchase of an ALTERA Nebulizer System or ALTERA replacement unit. People are eligible to receive up to 2 per year. Contact Cayston Access Program® (CAP) to use the ALTERA $10 co-pay coupon.


  • Enrolled in the Cayston Access Program
  • Not enrolled in a government healthcare prescription drug program such as Medicare Part D or Medicaid, including the Medicare Part D coverage gap known as the “donut hole”
  • Click here for additional Terms and Conditions

People with government oR private insurance needing extra financial support

independent third-party foundation referrals

For those who do not qualify for the CAYSTON Co-Pay Coupon, the Cayston Access Program (1-877-7CAYSTON) can refer them to available independent third-party foundations such as The HealthWell Foundation, The Assistance Fund, and Patient Services, Inc., including for assistance with the ALTERA Nebulizer.


  • Referral to an independent third-party foundation does not guarantee assistance
  • Foundations are independent from and unaffiliated with Gilead. Those who apply may need to provide additional information to apply for foundation assistance.

People with no insurance or who have been denied coverage for CAYSTON

the cayston patient assistance program

Provides assistance for those who are uninsured or who have been denied coverage for CAYSTON. Those who qualify may also qualify for assistance for additional or replacement parts for their ALTERA Nebulizer System.


  • Meet income requirements
  • No insurance coverage
  • Insured but denied coverage for CAYSTON
Visit My Cayston Community™