Why Is Acetic Acid Ear Drops So Hard to Find? [Explained for 2026]

If you've walked into a pharmacy to fill a prescription for acetic acid otic solution and walked out empty-handed, you're not alone. Despite being a relatively simple medication — essentially a precisely buffered acidic solution — acetic acid ear drops can be surprisingly difficult to find at many pharmacies across the country.

In this article, we break down exactly why that is and what you can do about it.

What Is Acetic Acid Otic Solution?

Acetic acid otic solution (2%) is a prescription ear drop used to treat otitis externa — the medical term for an outer ear infection, commonly known as swimmer's ear. It works by making the environment inside the ear canal highly acidic (pH 3), which stops bacteria and fungi from growing.

You may know this medication by its former brand name, VoSol. That brand has been discontinued in the U.S., though generic acetic acid otic solutions remain FDA-approved and are supposed to be commercially available.

Why Is It Hard to Find in 2026?

There are several interconnected reasons why acetic acid ear drops are often out of stock at pharmacies:

1. The VoSol Brand Was Discontinued

VoSol — the original brand-name version of acetic acid otic — was discontinued in the U.S. market. In May 2025, the FDA formally confirmed that VoSol's withdrawal was not for reasons of safety or effectiveness, which opened the door for generic manufacturers to continue producing the drug. However, the loss of the branded product reduced the number of manufacturers in the market, which can create supply inconsistencies.

2. It's a Low-Volume, Low-Margin Drug

Acetic acid otic is inexpensive — retail price is roughly $24 to $40 for a 15 mL bottle, and as low as $14.65 with a GoodRx coupon. This low price point means manufacturers and pharmacies earn very little on each bottle. As a result, pharmacies may not prioritize stocking it, and fewer generic manufacturers may find it worth producing in large volumes.

3. Seasonal Demand Spikes

Swimmer's ear is strongly seasonal. Cases spike sharply in late spring and summer when people spend more time in the water. This demand surge can quickly deplete pharmacy shelves that were never heavily stocked to begin with. If your local pharmacy carries only one or two boxes at a time, a few summer prescriptions can wipe out the supply for days or weeks.

4. Small Market, Few Suppliers

Because newer ear drop medications like Ciprodex (ciprofloxacin/dexamethasone) and ofloxacin otic are often preferred by prescribers for their broader spectrum of activity, acetic acid otic is prescribed less frequently than many other ear drops. This smaller demand means fewer generic manufacturers produce it, and any disruption to a single manufacturer's supply chain can cause widespread shortages at pharmacies.

Is Acetic Acid Otic on the FDA Drug Shortage List?

As of 2026, acetic acid otic solution does not appear on the FDA's official drug shortage list, which means the FDA does not consider it to be in a nationwide shortage. However, "not on the official list" does not always reflect what patients encounter at the pharmacy counter. Localized shortages — where one city or region can't find a drug while another has it in abundance — are very common for low-volume generics like this one.

What Should You Do If Your Pharmacy Is Out?

If the pharmacy you normally use is out of acetic acid otic, here are your best options:

Call around to other pharmacies. Independent pharmacies sometimes carry slower-moving generics that chain pharmacies don't stock.

Use medfinder. medfinder calls pharmacies near you on your behalf and texts you results — saving you hours of phone calls.

Ask your doctor about alternatives. Ofloxacin otic and Ciprodex are commonly stocked alternatives for swimmer's ear. Read our guide to alternatives to acetic acid ear drops for more details.

Ask about the combination product. Hydrocortisone/acetic acid (Acetasol HC) combines acetic acid with hydrocortisone for both infection and inflammation relief. Availability may differ from the plain acetic acid product.

How medfinder Can Help

Instead of calling pharmacy after pharmacy yourself, medfinder does the legwork for you. You tell us your medication, dosage, and location, and medfinder calls nearby pharmacies to check which ones have it in stock. Results are texted directly to you.

medfinder covers all medications — not just common ones — so even a hard-to-find generic like acetic acid otic is within its search scope. Learn more in our guide on how to find acetic acid ear drops in stock near you.

Bottom Line

Acetic acid ear drops are hard to find in 2026 because of brand discontinuation, low profit margins, seasonal demand spikes, and a limited number of generic suppliers. The good news is that this is a localized availability problem — not a safety issue — and with the right tools, you can find a pharmacy that has it in stock.