Zarxio Shortage Update: What Patients Need to Know in 2026

Zarxio in 2026: What's the Current Situation?

If you or a loved one depends on Zarxio (filgrastim-sndz) as part of cancer treatment, you've probably been affected by supply problems over the past few years. The shortage of G-CSF medications — including Zarxio — has been one of the most persistent drug shortages in the United States.

In this update, we'll cover where things stand in 2026: whether Zarxio is still in shortage, what's driving the problem, how much it costs, what alternatives are available, and how to find it in stock.

Is Zarxio Still in Shortage?

As of early 2026, Zarxio availability remains inconsistent. The FDA's drug shortage database has listed filgrastim products intermittently since 2022, and while there have been periods of improvement, supply has not fully stabilized.

What this means for patients:

• Some pharmacies have Zarxio in stock while others nearby do not
• Availability can change from day to day
• Specialty pharmacies and hospital pharmacies tend to have more reliable supply than retail chains
• Some regions of the country are more affected than others

The shortage is not unique to Zarxio. Other filgrastim products and G-CSF medications have also been affected, making it harder to find alternatives in some cases.

Why Is Zarxio Hard to Find?

The reasons behind the Zarxio shortage haven't changed much from previous years. Here's a quick summary:

Manufacturing Complexity

Zarxio is a biologic medication produced from living cells. The manufacturing process requires specialized facilities, strict quality controls, and long production timelines. Any disruption — contamination, equipment failure, regulatory issues — can delay entire batches by weeks or months.

Limited Producers

Only a few companies worldwide manufacture filgrastim products. When one manufacturer has a problem, the others can't easily absorb the extra demand. This creates a fragile supply chain.

Rising Demand

More cancer patients are receiving chemotherapy regimens that require G-CSF support. The aging population and expanded access to cancer treatment have increased overall demand for medications like Zarxio.

Distribution Bottlenecks

Zarxio must be stored and shipped under refrigeration. Cold chain logistics add complexity, and distribution isn't always even — some wholesalers and regions may receive more supply than others.

For a deeper dive, read our article on why Zarxio is so hard to find.

How Much Does Zarxio Cost in 2026?

The cost of Zarxio depends on your insurance, the pharmacy, and the specific formulation you need:

• Cash price (no insurance): $250 to $450 per 480 mcg prefilled syringe
• Full treatment course: A typical chemotherapy cycle may require 7 to 14 daily injections, bringing the total cost to $2,500 to $6,000+ per cycle without insurance
• With insurance: Most commercial insurance and Medicare Part B cover Zarxio. Your out-of-pocket cost will depend on your plan, but copays typically range from $0 to $100 per fill with good coverage

Zarxio is generally 40% to 50% cheaper than brand-name Neupogen, which is one reason it's become a preferred choice for insurers and patients alike.

If cost is a barrier, check out our guide on how to save money on Zarxio in 2026.

New Options and Developments

The biosimilar market for G-CSF medications has been growing, which may help ease the supply crunch over time:

• Additional filgrastim biosimilars have entered or are entering the market, increasing the total manufacturing capacity for short-acting G-CSF products
• Pegfilgrastim biosimilars like Udenyca and Fylnetra offer long-acting alternatives that require only one injection per chemo cycle
• Specialty pharmacy networks have expanded their oncology medication distribution capabilities
• Hospital buying groups have negotiated dedicated supply agreements to help ensure availability for their patients

While these developments are promising, they haven't fully resolved the shortage yet. Patients should continue to plan ahead and use all available tools to find their medication.

How to Find Zarxio in Stock

Here are your best options for finding Zarxio right now:

1. Use Medfinder

Medfinder lets you search for pharmacies with Zarxio in stock near your location. It's free and updated in real time. This is the fastest way to check availability without making dozens of phone calls.

2. Contact Specialty Pharmacies

Specialty pharmacies that serve oncology patients often maintain more reliable Zarxio supply. Ask your oncologist's office for a recommendation, or search for specialty pharmacies on Medfinder.

3. Ask Your Oncologist's Office

Many cancer centers have their own pharmacy or can administer Zarxio on-site. Your oncologist's office may also have contacts at specialty pharmacies or distributors who can help locate available supply.

4. Plan Ahead

Don't wait until the day after chemotherapy to start looking for Zarxio. As soon as your treatment schedule is set, begin checking availability. Starting your search 3 to 5 days early gives you time to explore options if your first-choice pharmacy is out of stock.

For more detailed tips, read our guide on how to find Zarxio in stock near you.

Final Thoughts

The Zarxio shortage in 2026 remains a challenge, but the situation is slowly improving as more biosimilar options enter the market and supply chains adapt. In the meantime, patients should stay proactive: use tools like Medfinder, work closely with your oncologist, and don't hesitate to ask about alternatives if Zarxio isn't available.

Your health shouldn't depend on luck. With the right strategy and resources, you can get the G-CSF treatment you need — even during a shortage.