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

The naltrexone shortage has turned what should be a routine prescription refill into a frustrating game of phone tag. You call one pharmacy — out of stock. You call another — on hold for 20 minutes. You call a third — "try the CVS on Fifth Street."

Here's the truth: there is no perfect real-time inventory system that shows you exactly which pharmacies have naltrexone in stock without any human contact. But there are smarter ways to search that save significant time — including options that call pharmacies for you or aggregate pricing data to give you a starting point.

Option 1: Use medfinder (Calls Pharmacies For You)

The most efficient approach is medfinder.com. medfinder is a service designed specifically for this problem: you provide your medication name, dosage, and location, and medfinder calls pharmacies in your area to check which ones can fill your prescription. You receive the results by text, without spending your morning on hold.

This is particularly valuable during the naltrexone shortage because:

Naltrexone availability changes frequently — what was out of stock last week may be in stock now, and vice versa

Different manufacturers supply different pharmacies — so a broader search yields better results

medfinder searches across pharmacy types — chain, independent, grocery, warehouse club — for a more complete picture

Option 2: Use GoodRx to Identify Active Pharmacies

GoodRx and similar discount platforms don't show real-time inventory, but they do show which pharmacies in your area are pricing naltrexone — which typically means those pharmacies are actively filling it. If a pharmacy appears on GoodRx's price comparison with a current price, it's a good indicator they've had recent supply.

How to use GoodRx as a starting list:

Go to GoodRx.com and search for "naltrexone 50 mg"

Enter your zip code to see nearby pharmacies and their prices

Note which pharmacies appear with prices — these are your priority call list

Call those pharmacies directly (or use medfinder to call for you) to verify current stock before driving over

Option 3: Use Your Pharmacy's App or Website

Some pharmacy chains allow you to check medication availability via their app or website before going in. This is imperfect — the data may not be real-time — but it can save unnecessary trips.

CVS app: You can check prescription status and sometimes availability via the CVS Pharmacy app.

Walgreens app: Walgreens allows you to transfer prescriptions digitally and may show availability status.

Walmart Pharmacy: The Walmart app allows you to check prescription status and initiate refills online.

These apps are better suited for patients who already have a relationship with a specific pharmacy chain. They are less useful for discovering which of many nearby pharmacies has stock.

Option 4: Ask Your Prescriber's Office to Check

Many medical practices have established relationships with specific pharmacies and may be able to e-prescribe to the pharmacy most likely to have stock. Some practices proactively track which local pharmacies are reliably filling naltrexone during the shortage.

When you call your provider's office for a refill, ask: "Which pharmacies in my area are currently stocking naltrexone?" A well-connected care coordinator may save you significant time.

Option 5: Use Mail-Order Pharmacy

Mail-order pharmacies bypass the local shortage problem entirely. Because they source medications centrally and often in bulk, they can sometimes obtain naltrexone when local retail pharmacies cannot. If you're on a stable long-term regimen, switching to a 90-day mail-order supply may be the most reliable solution.

Check with your insurance provider about which mail-order pharmacies are in-network. Many plans offer reduced copays for mail-order supplies.

Option 6: Expand Your Search Radius

If your immediate neighborhood is out of stock, don't give up. The shortage is uneven — one zip code might have no stock while a neighboring town has multiple options. Expanding your pharmacy search radius by 10-20 miles can open up significantly more options.

Also consider pharmacy types you might not normally use:

Independent pharmacies (can source from multiple wholesalers)

Grocery store pharmacies (Kroger, Publix, HEB, Albertsons, Safeway)

Warehouse club pharmacies (Costco, Sam's Club — membership required but often lower prices)

What to Say When You Call a Pharmacy

When you do call (or when medfinder calls on your behalf), be specific:

"Do you currently have naltrexone hydrochloride 50 mg tablets in stock?"

"How many tablets do you have — I need a 30-day supply (30 tablets)?"

"Can you order more from a different manufacturer if you're currently out?"

For more tips on searching for naltrexone during the shortage, see our full guide: How to Find Naltrexone in Stock Near You (Tools + Tips).