How to Find Pyridostigmine in Stock Near You (Tools + Tips)

For many patients with myasthenia gravis, running out of Pyridostigmine isn't an inconvenience — it's a medical crisis. Muscle weakness can worsen rapidly without consistent dosing, and the extended-release 180 mg formulation in particular has been in short supply at many pharmacies since 2024.

The good news: there are specific, actionable strategies that can help you find Pyridostigmine in stock without spending your entire afternoon on hold with pharmacies. Here's a step-by-step guide to locating your medication.

Step 1: Know Exactly What You're Looking For

Before you start calling pharmacies, be precise about what you need. Pharmacists can search their inventory more efficiently when you give them the exact product details. Know these three things:

Drug name: Pyridostigmine Bromide (the generic name), or Mestinon (brand name)

Strength and form: 60 mg immediate-release tablet, 180 mg extended-release tablet, or 60 mg/5 mL oral solution

Quantity needed: Your full prescription quantity, or whether you'd accept a partial fill

Step 2: Use medfinder to Search Pharmacies Near You

The most efficient approach is to use medfinder.com. Instead of calling dozens of pharmacies yourself, medfinder contacts pharmacies in your area to check which ones have your specific formulation in stock, then texts you the results. This saves hours of frustrating hold times and busy signals.

This approach is especially valuable for Pyridostigmine ER, where availability can vary widely between pharmacies that are just a few miles apart.

Step 3: Call Independent Pharmacies First

Independent and compounding pharmacies often use different wholesale distributors than major chains like CVS, Walgreens, or Rite Aid. This matters because different distributors have access to different manufacturers' stock. A shortage at one wholesaler doesn't necessarily mean a shortage at another.

When you call, be direct: 'Do you currently have Pyridostigmine Bromide 180 mg extended-release tablets in stock? If not, do you know when you'll receive more?' A good pharmacist will also check their wholesaler's current availability for you.

Step 4: Try Mail-Order Pharmacies

Mail-order pharmacies source from national wholesale networks and may have access to formulations that local retail pharmacies don't. Consider:

Amazon Pharmacy: Often competitive on pricing and has good availability for many generic medications.

Express Scripts / CVS Caremark: If your insurance uses these PBMs, check whether your plan's mail-order option has better availability.

Costco Pharmacy: Costco pharmacies tend to have strong generic inventory and some of the lowest base prices in the market.

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Step 5: Ask About Partial Fills

If a pharmacy has 15 of your 30-tablet prescription, ask if they can fill a partial supply now and the rest when stock arrives. Most pharmacies can do this, and it ensures you don't run out while waiting for a full supply to become available. Your pharmacist can flag the remainder of the prescription so you can pick it up later.

Step 6: Refill Early — Don't Wait Until You're Out

Most insurance plans allow you to refill a prescription 7–10 days before your current supply runs out. For a medication that can be difficult to find, always refill as early as your plan allows. This gives you a buffer in case you need to call multiple pharmacies or wait for a back order.

If you're on a 90-day supply cycle, consider asking your doctor whether your situation warrants more frequent (30-day) refills during the shortage to maintain flexibility.

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Step 7: Talk to Your Doctor About Formulation Flexibility

If the 180 mg ER tablets are simply unavailable in your area, ask your neurologist whether you can temporarily use the 60 mg immediate-release tablets instead. The IR tablets are generally easier to find. Your doctor can adjust your prescription and advise on a dosing schedule that provides similar coverage.

Do not make this switch on your own without medical guidance. Pyridostigmine dosing is highly individualized, and changes can affect your myasthenia gravis symptom control.

Step 8: Check Prices at Multiple Pharmacies

If you find multiple pharmacies that have Pyridostigmine in stock, compare prices before you fill. The cost of generic Pyridostigmine IR 60 mg can vary from about $26 with a GoodRx coupon to over $100 cash at some pharmacies. Use GoodRx, SingleCare, or RxSaver to compare prices at pharmacies in your area before you commit.

What to Do If You Still Can't Find It

If you've tried multiple pharmacies and still can't find Pyridostigmine ER in stock, let your neurologist know. They may be able to write a letter of medical necessity to your insurer to cover the brand-name Mestinon Timespan at a lower cost, or discuss whether any alternative medications might be appropriate for your situation.

For background on why this shortage is happening, read our explainer on why Pyridostigmine is so hard to find in 2026.