How to Find Releuko In Stock Near You (Tools + Tips)

Releuko (filgrastim-ayow) is not a medication you can simply walk into any pharmacy and pick up. As a specialty oncology biosimilar injection, it moves through different distribution channels than standard prescriptions. When your treatment schedule demands timely access, knowing exactly where to look — and which tools to use — can make all the difference.

Step 1: Start With Your Oncologist's Office

Your oncology team is your best first resource. Most oncology clinics and infusion centers use a buy-and-bill model, meaning they purchase Releuko directly from a specialty distributor and administer it during your scheduled visit. If your clinic has Releuko on hand, you may not need to find a pharmacy at all. Call your oncologist's office and ask specifically: "Do you carry Releuko in your office, or do I need to fill this at a pharmacy?"

Step 2: Ask for a Specialty Pharmacy Referral

If you need to fill the prescription yourself, a specialty pharmacy is far more likely to have Releuko than a standard retail pharmacy. Specialty pharmacies have the cold-chain infrastructure, regulatory compliance, and specialty distribution relationships to stock biosimilar injectables. Ask your oncologist for a referral to:

Accredo (Express Scripts Specialty Pharmacy) — one of the largest specialty pharmacies in the U.S.

CVS Specialty — handles oncology biologics with home delivery.

Walgreens Specialty — specialty division separate from retail locations.

Biologics by McKesson — focused on oncology and rare disease biologics.

Step 3: Use medfinder to Search Local Pharmacies

If you need a retail or local pharmacy option, medfinder is a service that calls pharmacies near you to check which ones have your medication in stock. You simply provide your medication name (Releuko), dosage (300 mcg or 480 mcg), and your location. medfinder contacts pharmacies on your behalf and texts you results — eliminating the exhausting cycle of being placed on hold.

Step 4: Check the FDA Drug Shortage Database

Bookmark the FDA Drug Shortage Database and search for filgrastim or Releuko. If a national shortage is declared, the database will show estimated resupply dates and available alternatives. As of 2026, Releuko is not listed as an active shortage, but checking periodically is good practice.

Step 5: Confirm Your Insurance Coverage and Preferred Pharmacy

Before you call pharmacies, confirm which ones are in-network for your insurance plan. Specialty biologics like Releuko often require a specialty pharmacy that has a contract with your insurer. If you use an out-of-network specialty pharmacy, you may face much higher out-of-pocket costs. Call the member services number on your insurance card and ask: "Which specialty pharmacies are in-network for Releuko (filgrastim-ayow)?"

Step 6: Know Your Dosage and NDC Code

When calling pharmacies, be specific about the form and strength you need. Releuko comes in:

300 mcg/0.5 mL single-dose prefilled syringe or vial

480 mcg/0.8 mL single-dose prefilled syringe or vial

Providing the specific strength and form (vial vs. prefilled syringe) helps pharmacy staff give you accurate availability information quickly. Ask about the NDC number on your prescription to avoid any mix-up with other filgrastim products.

Step 7: Talk to Your Doctor About Timing and Alternatives

If Releuko simply cannot be located in time for your scheduled dose, communicate immediately with your oncologist. Missing a G-CSF dose after chemotherapy can have serious consequences. Your doctor may be able to:

Provide the injection directly from their clinic's stock

Switch you temporarily to Zarxio, Nivestym, or Neupogen

Contact the manufacturer (Amneal) for emergency access options

Quick Reference: Where to Look for Releuko

First: Your oncologist's clinic or infusion center

Second: In-network specialty pharmacies (Accredo, CVS Specialty, Walgreens Specialty)

Third: medfinder — calls retail and specialty pharmacies near you to check stock

Last resort: Ask your oncologist to temporarily switch to an available filgrastim product

For more context on why Releuko can be hard to find in the first place, read our article on why Releuko is so hard to find.