How to Check If a Pharmacy Has Merilog in Stock

You've got the prescription. Now you need to actually find Merilog at a pharmacy — and if you've ever tried calling around to check stock on a newer medication, you know it can be a frustrating, time-consuming process. The hold times, the transfers, the "let me check... no, we don't carry that."

There's a better way. Here's how to check if a pharmacy has Merilog (Insulin Aspart-szjj) in stock without picking up the phone.

Why Merilog Can Be Tricky to Find

Merilog was FDA-approved in February 2025 and launched by Sanofi in July 2025. As a relatively new biosimilar insulin, not every pharmacy has added it to their regular inventory yet. Pharmacies typically stock medications based on demand, and it takes time for a new product to build a track record of prescriptions in any given area.

On top of that, the insulin market is in a period of transition. Novo Nordisk discontinued its unbranded Insulin Aspart biologic at the end of 2025, and Fiasp pen shortages have continued into early 2026. This shifting landscape means pharmacies are still adjusting their insulin inventories. For more context, read our guide on why Merilog can be hard to find.

How to Check Stock Without Calling

1. Use Medfinder

Medfinder is the fastest way to check pharmacy stock for Merilog. Just enter the medication name, your location, and Medfinder shows you which pharmacies near you have it available — along with pricing information. No account needed. No phone calls. It's specifically designed for situations like this, where you need to find a medication that isn't available everywhere.

2. Check Pharmacy Apps and Websites

Many major pharmacy chains let you check medication availability through their apps or websites:

• CVS — Use the CVS app or cvs.com to check prescription status. You can also transfer prescriptions between locations if one store has Merilog and another doesn't.
• Walgreens — The Walgreens app shows prescription availability and lets you search nearby stores. You can request a transfer if your usual location is out of stock.
• Walmart — Walmart's pharmacy app allows you to check if a medication is available at your local store.
• Rite Aid — Check availability through the Rite Aid pharmacy portal.
• Costco — Costco pharmacies often have competitive insulin pricing. Check availability through their pharmacy page (you don't need a Costco membership to use the pharmacy).

Keep in mind: these tools show whether a pharmacy can fill a prescription, but real-time stock levels aren't always reflected. If the app says a medication is available but you want to be sure, a quick chat through the app may confirm it.

3. Use GoodRx to Compare Prices and Check Availability

GoodRx isn't just a coupon tool — it also shows which pharmacies near you carry a specific medication and what they charge. Search for "Merilog" or "Insulin Aspart-szjj" on GoodRx, enter your zip code, and you'll see a list of pharmacies with prices. If a pharmacy shows a price, it generally means they carry or can order the medication.

4. Try Your Insurance Company's Pharmacy Finder

If you have insurance, your plan's website or app may have a pharmacy finder that shows which in-network pharmacies have specific medications available. This is especially useful for confirming that a pharmacy both has Merilog in stock and accepts your insurance.

5. Send a Prescription to a Mail-Order Pharmacy

If local availability is an issue, consider a mail-order pharmacy. Many insurance plans offer mail-order options (like Express Scripts, CVS Caremark, or OptumRx) that ship medications directly to your home. Mail-order pharmacies often have better access to newer medications since they operate from centralized distribution centers. The downside: it may take a few days to arrive, so plan ahead.

If You Prefer to Call

Sometimes a quick phone call is the most direct route. If you want to call pharmacies to check stock, here are some tips to save time:

• Call the pharmacy directly — Skip the main store number and use the pharmacy-specific line.
• Ask specifically for Merilog — Use the brand name "Merilog" and the generic name "Insulin Aspart-szjj" so the pharmacist can check both.
• Ask if they can order it — If a pharmacy doesn't have it on the shelf but has it in their system, they can often order it from their wholesaler and have it within 1-2 business days.
• Ask about the SoloStar pen vs. vial — Merilog comes in a 10 mL vial and the SoloStar prefilled pen (5 pens per carton). A pharmacy might have one formulation but not the other.

Once You Find It

After you've located a pharmacy with Merilog in stock, here are a few things to do:

• Transfer your prescription — If your prescription was sent to a pharmacy that doesn't carry Merilog, most pharmacies can transfer it to one that does. You can usually request this through the pharmacy's app or by calling.
• Activate your savings — Before you pick it up, make sure you've enrolled in the Sanofi Insulins Valyou Savings Program for a $35 per 30-day supply price, or check for other discount options. Our Merilog savings guide has all the details.
• Confirm the price at the counter — Always ask the pharmacy to run any discount cards or insurance before you pay. Prices can vary significantly between pharmacies.
• Set up auto-refills — Once you've found a pharmacy that reliably stocks Merilog, set up auto-refills so you don't have to go through this process every month.

Final Thoughts

Finding Merilog shouldn't require an afternoon of phone calls. Tools like Medfinder make it easy to check stock at pharmacies near you in seconds. As Merilog becomes more established in 2026, availability should improve — but in the meantime, using the right tools saves you time and frustration.

If you're having trouble finding Merilog at all, our guide on how to find Merilog in stock near you covers even more strategies, including working with your doctor on alternative options if needed.