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

You've already driven to two pharmacies this week. Both times, you were told Tamoxifen is out of stock. There has to be a better way — and there is.

While pharmacy inventory data isn't publicly available the way, say, grocery store stock is, there are practical tools and methods that can tell you which pharmacies have Tamoxifen in stock before you leave home. Here's how.

The Problem: Why Can't I Just Check Online?

Pharmacies — whether CVS, Walgreens, Rite Aid, or a local independent — do not publish their real-time drug inventory online. Their internal inventory systems are not connected to any publicly accessible database. Pricing tools like GoodRx show you where a pharmacy dispenses a drug and at what price, but they cannot confirm whether the specific drug is physically in stock at that location right now.

This means the only way to confirm inventory is through direct inquiry — but there are faster ways to do that inquiry than calling each pharmacy yourself.

Option 1: Use medfinder

medfinder is specifically built for this problem. You provide your medication name, dosage, and zip code — and medfinder contacts pharmacies near you to ask whether they have your prescription in stock. Results are texted back to you. This approach turns a 45-minute phone marathon into a 5-minute task.

medfinder covers all medications, not just shortage drugs — so it works for Tamoxifen just as well as it does for drugs actively listed on the FDA shortage database.

Option 2: Use Your Chain Pharmacy's App or Customer Service Line

If you use CVS, Walgreens, or another major chain, their customer service phone line (not the pharmacy counter itself) can sometimes check inventory across nearby branches. The key phrases to use:

• "Can you check if any of your nearby locations have Tamoxifen 20 mg in stock?"
• "I need to transfer my prescription — can you find a branch that has it available today?"

Chain pharmacies can access their own network inventory data internally, even if it's not available to you online. This is often faster than calling individual locations.

Option 3: Call Your Oncologist's Office or Pharmacy Liaison

Many breast cancer centers have a pharmacist or pharmacy liaison on staff who knows which local pharmacies regularly stock Tamoxifen. Your oncology nurse or navigator may also have this knowledge. A quick call to your care team may save you significant time — especially in areas where one or two pharmacies reliably stock Tamoxifen while others frequently run out.

Option 4: Switching to Mail-Order Pharmacy

If stock-out issues are a recurring problem, the most elegant solution is to stop relying on retail pharmacies for your Tamoxifen refills and switch to a mail-order pharmacy. Mail-order pharmacies:

• Maintain larger, more reliable inventory than retail locations
• Deliver 90-day supplies directly to your home
• Often cost less per dose than retail pharmacies, especially for maintenance medications

Ask your insurer about their mail-order benefit. Most commercial plans and Medicare Part D include mail-order coverage for maintenance medications like Tamoxifen.

What to Do If Every Option Fails

In rare cases — particularly in rural areas or during brief supply disruptions — you may not be able to find Tamoxifen at any local pharmacy within a reasonable distance. In this situation:

1. Contact your oncologist the same day. They may have samples or know of a pharmacist contact who can help.
2. Ask your oncologist about a compounding pharmacy. While not a long-term solution, a compounding pharmacy may be able to prepare Tamoxifen for short-term bridging.
3. Do not skip doses without telling your doctor. Even a few missed doses are suboptimal — your care team needs to know so they can help find a solution.

For more strategies on finding Tamoxifen, see our complete guide: How to Find Tamoxifen in Stock Near You (Tools + Tips)