How to Save Money on Zyflo in 2026: Coupons, Discounts, and Patient Assistance

Zyflo (zileuton) carries one of the highest retail price tags in the asthma medication category. Without a discount program or adequate insurance coverage, a 30-day supply can cost more than $3,000 — making it inaccessible for most patients. But with the right tools, you can reduce that cost to a few hundred dollars or less. Here's everything you need to know about saving money on Zyflo in 2026.

Why Does Zyflo Cost So Much?

Zyflo's high price is partly due to its niche position in the market. While a generic form (zileuton extended-release) exists, the branded Zyflo CR and even the generic carry high list prices due to low prescribing volume and limited market competition. The retail price for Zyflo CR 600 mg (120 tablets, a standard 30-day supply) typically ranges from $2,800 to $4,000 depending on the pharmacy.

Insurance coverage, when available, typically places Zyflo in Tier 3 or Tier 4 of the formulary, requiring prior authorization and resulting in copays that can still run $100-$300/month for patients who get coverage approved. For those without adequate coverage, the full retail price is crushing.

Option 1: GoodRx Coupons

GoodRx is a free-to-use discount card program that negotiates lower prices at participating pharmacies. For Zyflo CR (zileuton ER), GoodRx can reduce the cost of 120 tablets from over $3,000 to approximately $260-$315 — a savings of up to 91%. For the immediate-release Zyflo, prices start higher due to even lower demand.

How to use GoodRx for Zyflo:

Go to GoodRx.com or download the GoodRx app

Search for 'Zyflo CR' or 'zileuton ER', 600 mg, 120 tablets

Enter your ZIP code to see prices at pharmacies near you

Select the best price and show the coupon (printed or digital) to your pharmacist

GoodRx works independently of your insurance. You pay the coupon price directly, without needing insurance approval. In some cases, the GoodRx price is lower than your insurance copay — always compare both.

Option 2: SingleCare

SingleCare is another free prescription savings program offering competitive pricing on zileuton ER. SingleCare prices for a 30-day supply of zileuton ER typically run approximately $319, comparable to GoodRx. Like GoodRx, SingleCare works at most major pharmacy chains and many independent pharmacies.

Some patients find that SingleCare is accepted at pharmacies where GoodRx prices are higher, so it's worth comparing both programs at your preferred pharmacy before purchasing.

Option 3: Insurance With Prior Authorization

Most commercial insurance plans will cover Zyflo, but typically require prior authorization and step therapy (trying cheaper alternatives first). If your doctor has already prescribed Zyflo after you've tried montelukast or ICS, the PA may be straightforward. Once approved, your copay will depend on your plan tier:

Tier 3: Copays typically $50-$100/month (varies by plan)

Tier 4 (specialty): Copays may reach $200-$400/month or be a percentage of the drug cost

Tip: If your insurance copay is higher than the GoodRx/SingleCare price, you can simply use the discount card instead of your insurance. Pharmacies cannot run both simultaneously — choose whichever is cheaper at the time of fill.

Option 4: Medicare Coverage

Medicare Part D covers prescription drugs including Zyflo. The actual coverage depends on your specific Part D plan. Some Medicare Part D plans have copays for Zyflo/zileuton around $317-$320/month — similar to the GoodRx coupon price. If your Medicare copay is higher than $315, using a GoodRx coupon directly may be more cost-effective.

Note: As of 2025, Medicare Part D has a $2,000 annual out-of-pocket cap. For patients who have reached their deductible, zileuton may become fully covered for the remainder of the year.

Option 5: Patient Assistance Programs (PAPs)

Patient assistance programs provide free or low-cost medications to qualifying patients, typically those with low income or inadequate insurance coverage. For Zyflo:

PAN Foundation: May provide financial assistance for qualifying patients on Zyflo. Contact PAN Foundation at panfoundation.org to check eligibility.

NeedyMeds.org: A free database of patient assistance programs. Search for zileuton to find current programs and eligibility criteria.

State pharmaceutical assistance programs: Many states offer drug assistance programs for residents who meet income and insurance eligibility criteria. Check your state health department website for details.

Option 6: Switch to a 90-Day Supply

If your insurance covers Zyflo and you're on a stable, long-term regimen, ask your prescriber to write a 90-day supply prescription for use at a mail-order pharmacy. Mail-order typically offers lower per-dose pricing and avoids the monthly refill hassle. Some insurers require mail-order for maintenance medications after the first 2-3 fills and reduce your copay for doing so.

Quick Comparison: Cost Options for Zyflo CR

Retail (no discount): $2,800–$4,000/month

GoodRx coupon: ~$260–$315/month

SingleCare coupon: ~$320/month

Insurance (Tier 3, with PA): ~$50–$100/month

Patient assistance (qualified): $0 or minimal cost

The Bottom Line

Zyflo's sticker price looks scary, but between GoodRx coupons, SingleCare, insurance coverage with PA, and patient assistance programs, most patients can access zileuton at a manageable cost. Start with GoodRx to get an immediate benchmark price, and compare that against your insurance copay at fill. And if you're still having trouble finding Zyflo at a pharmacy near you, use medfinder to locate which pharmacies in your area have it in stock.

See also: How to Find Zyflo in Stock Near You (Tools + Tips)