How to Check Insulin Degludec Stock Without Picking Up the Phone

You've got your prescription for Insulin Degludec (Tresiba), but when you go to fill it, your pharmacy says they're out of stock. Sound familiar? With intermittent supply issues affecting Tresiba in 2025–2026, this has become a frustrating reality for many patients.

The last thing you want to do is call pharmacy after pharmacy asking the same question. Here's how to check stock online and save yourself time and stress.

Why Is Insulin Degludec Hard to Find?

Tresiba has experienced periodic supply constraints due to high demand, manufacturing capacity limitations, and formulary shifts. The $35 insulin cap under the Inflation Reduction Act has increased utilization, and the U-200 formulation has been especially hard to find at times. For the full picture, read our breakdown of why Insulin Degludec is hard to find.

How to Check Stock Without Calling

1. Use Medfinder

Medfinder is built specifically for this — finding medications that are in stock near you. Just search for Insulin Degludec or Tresiba, enter your ZIP code, and see which pharmacies currently have it available. It's free and doesn't require an account.

This is the fastest way to avoid the phone-tag game with pharmacies.

2. Check Pharmacy Apps and Websites

Several major pharmacy chains let you check stock or start a transfer through their apps:

• CVS app — You can search for a medication and see if it's available at nearby locations. Use the "Transfer Prescription" feature to move your Rx to a store that has it.
• Walgreens app — Check prescription status and availability. You can also request a transfer between Walgreens locations.
• Walmart Pharmacy — The Walmart app shows medication pricing and allows you to search nearby stores.
• Rite Aid, Costco, and others — Most major chains have online pharmacy portals where you can manage and transfer prescriptions.

Keep in mind that these apps may not always show real-time stock for all medications. If the app says it's available, it's worth confirming at checkout or with a quick message through the app's chat feature.

3. Use GoodRx to Compare and Locate

GoodRx shows pricing at pharmacies near you and often indicates availability. While it's primarily a coupon tool, seeing active pricing at a location is a reasonable signal that the pharmacy carries the medication. You can also use GoodRx to find the best price on Insulin Degludec.

4. Contact Your Insurance's Mail-Order Pharmacy

If you're on a maintenance medication like Tresiba, your insurance plan may offer a mail-order pharmacy option. Mail-order pharmacies often have better stock of specialty medications and can deliver a 90-day supply directly to your door. Check with your insurer — many offer this at a lower copay than retail.

5. Try Independent and Specialty Pharmacies

Don't overlook independent pharmacies. They sometimes have stock when the big chains don't, and they're often more willing to special-order medications for you. Specialty pharmacies that focus on diabetes supplies may also be a good option.

If You Prefer to Call

Sometimes a phone call is still the fastest route. Here are some tips:

• Call early in the morning — Pharmacies are less busy and staff have more time to check stock.
• Ask about both formulations — Tresiba comes in U-100 and U-200. If one is out of stock, the other may be available (though the doses differ, so check with your doctor).
• Ask when they expect the next shipment — Pharmacies receive deliveries on regular schedules. If they're temporarily out, they may have it within a day or two.
• Ask if they can special-order it — Many pharmacies can order Tresiba from their wholesaler with next-day delivery.

Once You Find It

When you locate a pharmacy with Insulin Degludec in stock:

• Transfer your prescription — Your new pharmacy can usually handle the transfer with just a phone call to your old pharmacy. You can also ask your doctor to send a new prescription electronically.
• Ask about auto-refills — Once you find a reliable pharmacy, set up automatic refills so you don't have to scramble each month.
• Stock up if possible — If your insurance allows a 90-day supply, take advantage of it. This gives you a buffer against future stock issues.
• Check your savings options — Before you pay, make sure you're using the Tresiba savings card or the Novo Nordisk Insulin Value Program ($35 for cash-paying patients). Medicare patients benefit from the $35/month cap under the Inflation Reduction Act.

Final Thoughts

Finding Insulin Degludec in stock shouldn't be a second job. Tools like Medfinder take the guesswork out of the process, and pharmacy apps make transfers easier than ever. If you're dealing with ongoing availability issues, talk to your doctor about whether alternative basal insulins might work as a backup plan.