Anastrozole Shortage Update: What Patients Need to Know in 2026

Anastrozole is a cornerstone treatment for hormone receptor-positive breast cancer in postmenopausal women. If you're one of the hundreds of thousands of women who rely on it daily, any news about supply disruptions is understandably alarming. Here is the most up-to-date information available on anastrozole availability in 2026 — including what we know, what has happened in the past, and what patients can do today.

Current Anastrozole Supply Status (2026)

As of 2026, the FDA's Drug Shortage Database does not list anastrozole as having an active national shortage in the United States. The drug is produced by multiple FDA-approved generic manufacturers — including Teva, Cipla, Accord Healthcare, Eugia Pharma, and Zydus Pharmaceuticals — which provides meaningful supply chain redundancy compared to single-source drugs.

However, "no national shortage" doesn't mean every pharmacy in every city has it on the shelf. Localized, temporary out-of-stock situations continue to affect individual patients across the country. These tend to resolve within days to a couple of weeks, but they are real and disruptive.

Recent Anastrozole Supply History

In mid-2025, Australia's Therapeutic Goods Administration (TGA) reported that ARIANNA brand anastrozole tablets had entered a "Limited Availability" phase under Australia's national Medicine Shortages Information Initiative. The shortage was projected to resolve by November 2025. While this was an international issue and did not directly cause a U.S. shortage, global manufacturing and ingredient supply chains are interconnected — so international disruptions can occasionally affect U.S. supply.

In the U.S., the broader generic oncology drug supply has faced structural challenges. A 2023 White House report noted a significant shortage of multiple generic cancer drugs due to manufacturing and supply chain issues. While anastrozole itself was not among the most severely impacted drugs, the same systemic pressures apply — thin profit margins, concentrated manufacturing, and complex global ingredient sourcing.

Why Is Generic Anastrozole Sometimes Hard to Get Locally?

The economics of generic drug manufacturing create an inherent tension between low prices and reliable supply. Here's why:

Razor-thin margins: Generic anastrozole can cost as little as $9–$15 for 30 tablets. At these prices, manufacturers have little financial cushion to invest in stockpile redundancy.

Concentrated API sourcing: Active pharmaceutical ingredients (APIs) for many generic drugs are sourced predominantly from facilities in India and China. Disruptions at these facilities — from quality issues, regulatory actions, or logistics delays — can ripple through the supply chain.

Wholesaler allocation: Pharmacies typically don't buy directly from manufacturers — they buy from wholesalers. If a wholesaler has a disruption or allocation issue, multiple pharmacies in a region can go without simultaneously.

How to Protect Yourself as a Patient

Given that localized supply issues can happen even without a national shortage, here are steps every anastrozole patient should take to protect access to their medication:

Refill early. Don't wait until your last few tablets. Refill when you have at least 7–10 days left.

Get 90-day supplies. A 90-day supply means you only need to find and fill your prescription 4 times per year instead of 12. Ask your oncologist to write a 90-day prescription.

Consider mail order. Mail-order pharmacies maintain large stockpiles and can ship 90-day supplies to your door. This dramatically reduces your exposure to local pharmacy stock issues.

Know your backup pharmacies. Identify 2–3 pharmacies in your area that reliably stock anastrozole — including your hospital's outpatient pharmacy and Costco or Walmart, which tend to have strong generic inventory.

Use medfinder when you're stuck. If your pharmacy is out of stock, medfinder calls pharmacies near you to find which ones can fill your anastrozole prescription. This saves the time and stress of calling multiple pharmacies yourself.

What to Do If You Can't Find Anastrozole and You're Running Low

If you've exhausted local options and have fewer than 5 days of medication left, contact your oncologist's office immediately. They can:

Provide samples to bridge the gap

Prescribe a temporary alternative (letrozole or exemestane)

Contact their pharmacy contacts to source anastrozole from a specialty supplier

Initiate a patient assistance program application if cost is also a barrier

Next Steps

Read our guide on how to find anastrozole in stock near you or explore your alternatives to anastrozole if the supply situation in your area persists.