How to Check If a Pharmacy Has Releuko in Stock (Without Calling)

Checking pharmacy inventory for Releuko (filgrastim-ayow) is trickier than for most medications. Because it's a specialty oncology injectable, it's not stocked at most retail pharmacies — and even pharmacies that do carry it may not update their online systems accurately. Here's how to check availability effectively without spending hours on hold.

Why Online Pharmacy Inventory Tools Don't Work for Releuko

Most major pharmacy chains (CVS, Walgreens, Rite Aid) have online tools or apps that let customers check stock for common medications. However, these tools are typically built for oral retail medications — tablets, capsules, and similar products. They often cannot accurately reflect specialty injectable inventory for several reasons:

Releuko is stored in refrigerated specialty bays, not standard pharmacy shelves

Most retail pharmacy locations simply don't stock it at all

Specialty pharmacies (which do carry it) often don't have real-time online inventory tools for the public

Inventory changes daily based on orders, returns, and expiration management

Method 1: Use medfinder (Fastest Option)

medfinder is a service specifically built for situations like this. Instead of you calling pharmacy after pharmacy, medfinder calls pharmacies near you to check which ones have Releuko in stock and can fill your prescription. Here's how it works:

Provide your medication (Releuko / filgrastim-ayow), dosage (300 mcg or 480 mcg), and your location

medfinder contacts pharmacies in your area on your behalf

You receive a text with the results — which pharmacies have it and can fill your prescription

This is particularly valuable for Releuko because finding it requires calling specialty pharmacies, oncology clinics, and potentially multiple retail locations — a process that can easily take 2–3 hours on your own. Visit medfinder.com to get started.

Method 2: Ask Your Oncologist's Office

Your oncology team likely has established relationships with specialty distributors and knows which local pharmacies or infusion centers carry Releuko. Before calling any pharmacy yourself, call your oncologist's office and ask: "Can your team tell me which specialty pharmacy near me has Releuko in stock?" Many oncology practices have a patient navigator or financial counselor who manages these logistics daily.

Method 3: Call Specialty Pharmacies Directly

If you're making calls yourself, focus on specialty pharmacies rather than retail chains. These are most likely to stock Releuko:

Accredo (1-800-803-2523) — Express Scripts specialty pharmacy, national coverage

CVS Specialty — Nationwide network, handles oncology biologics

Walgreens Specialty — Different from standard Walgreens retail; handles specialty injectables

Biologics by McKesson — Focused on oncology and rare disease biologics with nationwide reach

Method 4: Contact Amneal Pharmaceuticals

Amneal Pharmaceuticals (the distributor of Releuko) may be able to direct you to pharmacies and distributors that currently carry the product. Your oncologist's office can contact Amneal's specialty pharmacy team directly, which is often faster than a patient calling independently.

What to Say When You Call a Pharmacy About Releuko

When calling a pharmacy to check Releuko availability, be specific. Say:

"I need to fill a prescription for Releuko (filgrastim-ayow), [300 mcg/0.5 mL or 480 mcg/0.8 mL] single-dose [vial or prefilled syringe]. Do you currently carry this product and can you fill a prescription for [number] units?"

Providing the exact strength, form, and quantity helps the pharmacist check their inventory accurately and prevents you from being incorrectly told the product is unavailable.

Proactive Planning: Check Availability 5–7 Days Early

Don't wait until the day you need your dose to check availability. For patients receiving Releuko as part of a recurring chemotherapy cycle, check availability 5–7 days before your next scheduled dose. This gives your oncology team or specialty pharmacy time to order the product if it needs to be specially procured. For more background on why Releuko can be hard to find, see our article on why Releuko is so hard to find.