Class II U.S. Food and Drug Administration

Acella Pharmaceuticals, LLC Doxycycline Hyclate Tablets, USP 100 mg*, 500-count bottle recall: Failed dissolution specifications: Stability testing found that the lot did

Recall published 1+ years ago

Failed dissolution specifications: Stability testing found that the lot did not meet dissolution specifications.

The hazard: Potency, impurity or stability failure

An out-of-specification result prompted this notice — potency, an impurity, or stability over the shelf life.

What the notice says: Failed dissolution specifications: Stability testing found that the lot did not meet dissolution specifications.

Why it matters: The product failed a specification test: it may contain more or less active ingredient than the label states, carry an impurity, or degrade before its expiry date. A sub-potent dose can leave a condition untreated; a super-potent one can cause an overdose.

Symptoms and when to call a doctor

The risk depends entirely on the drug. For a medicine where dose matters closely — a blood thinner, an anti-epileptic, a thyroid or heart medicine, insulin — talk to your prescriber before changing anything. Seek urgent care if you have symptoms that suggest too much drug, or if the condition the medicine controls starts breaking through.

This page is general information, not medical advice. If you feel unwell, a clinician who can see you is the only person able to judge your case.

Recall details

Recall number
D-0014-2026
Published
October 15, 2025
Risk level
Class II
Status
Ongoing
Issued by
U.S. Food and Drug Administration
Brand
Acella Pharmaceuticals, LLC
Product type
Prescription & OTC drugs
Units affected
4,680 500-count bottles
Distribution
Nationwide
Made in
United States
Lot / code info
Lot #: P24ZLK1, Exp 5/31/2027

Products covered by this recall

Doxycycline Hyclate Tablets, USP 100 mg*, 500-count bottle, Rx Only, Distributed by: Acella Pharmaceuticals, LLC, Alpharetta, GA 30005, NDC 42192-501-05.

Check your product

The notice names 11 codes you can read straight off the package. Type the one printed on yours and the list below narrows to it.

Lot or batch code

Usually ink-stamped near the seam, the cap or the bottom of the pack.

  • P24ZLK1
  • Exp 5
  • 31
  • 2027 — 4
  • 680 500-count bottles

Best-by / use-by date

Printed beside the lot code, not on the price sticker.

  • 31
  • 2027 — 4
  • 680 500-count bottles

NDC number

On the carton and again on the bottle or blister label.

  • 42192-501-05

Package size

Match the net weight or the piece count on the front of the pack.

  • 100 mg
  • 500 count

Codes are lifted verbatim from the FDA — Drug enforcement notice. A code that is missing here may still be covered — the official notice is the complete list.

What to do about Potency

Acella Pharmaceuticals, LLC — An out-of-specification result prompted this notice — potency, an impurity, or stability over the shelf life.

  1. Check the lot number on your pack against the codes listed above before you do anything else.
  2. Report any change in how the medicine is working to FDA MedWatch, which is where most of these signals originate.
  3. Do not stop a prescription on your own. For most conditions an uncertain dose is safer than no dose while you get advice.
  4. Call your prescriber or pharmacist and ask whether to swap the lot, re-test, or change nothing.

What the company owes you

A recalled medicine is the manufacturer’s cost to carry, not yours or your pharmacist’s.

  • The purchase price or co-pay is refundable, and so is the cost of returning the product if they ask you to ship it.
  • Ask the pharmacy to handle the claim where they can — they process recall returns in bulk and it saves you the correspondence.
  • Keep the carton, the leaflet and the pharmacy label together until the claim is closed.
  • Costs beyond the price of the medicine need to go to the company directly, in writing, with the recall number quoted.

Company contact: Acella Pharmaceuticals, LLC — 1880 Mcfarland Pkwy Ste 110, Alpharetta, GA, 30005-1795

The official notice

This page summarises a notice published by U.S. Food and Drug Administration. The agency notice is the authoritative version — read it before you act, and treat it as the final word if anything here looks different.

Open the FDA — Drug enforcement record U.S. Food and Drug Administration recalls

Questions people ask about this recall

Why was Acella Pharmaceuticals, LLC prescription & otc drugs recalled?

Failed dissolution specifications: Stability testing found that the lot did not meet dissolution specifications. Failed dissolution specifications: Stability testing found that the lot did not meet dissolution specifications.

How do I know if I have the recalled product?

Match the codes printed on your package against the notice: lot code P24ZLK1, Exp 5, 31; best-by date 31 or 2027 — 4. If the code on your package is not on that list, your unit is outside the recall.

What should I do with it right now?

Check the lot number on your pack against the codes listed above before you do anything else.

Can I get my money back?

The purchase price or co-pay is refundable, and so is the cost of returning the product if they ask you to ship it.

Where was the recalled product sold?

It was distributed nationwide.

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