Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Class III · Low risk Terminated Initiated Apr 21, 2021 (5 years ago)

Acyclovir Tablets

Class III — Low risk. Unlikely to cause harm, but violates FDA regulations.

Why it was recalled

Labeling: Incorrect or Missing Lot and/or Exp Date

Cause type: Labeling / mix-up

Wrong label, wrong strength, mixed-up products, or packaging errors. One of the most dangerous causes - you can end up taking the wrong drug or the wrong dose. All labeling / mix-up recalls.

What was recalled

Acyclovir Tablets, USP, 400 mg, 100 Tablets, Rx Only, Distributed by: Avet Pharmaceuticals Inc., East Brunswick, NJ 08816, NDC 23155-227-01. Packaged in 150 cc white HDPE bottle

Affected NDC 23155-0227-01

Compare with the code on your package — it is the most precise check available.

Drug: Acyclovir

Product details

From the FDA NDC directory, for the product code this recall names. Compare with the label on your package.

ProductStrengthForm & routeLabelerType
Acyclovir
NDC 23155-0227
400 mg/1 Tablet
Oral
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. Rx
Recalling firm
Heritage Pharmaceuticals Inc
NDC code
23155-227-01
Origin
NJ, United States
Initiated by
Voluntary: Firm initiated
FDA recall number
D-0367-2021 · FDA notice

Low risk, still worth a check. Class III means the product is unlikely to cause harm but breaks an FDA rule (often labeling). If your lot matches, your pharmacy will normally swap it; there is no need for alarm. This recall is now terminated, which means the firm has finished removing the affected product; anything on pharmacy shelves today should be unaffected.

Other Acyclovir recalls

See all
Class II · Moderate risk

Acyclovir Sodium Injection

Presence of Particulate Matter: Customer complaint for a dark red, brown and black particulate floating inside vial.

Completed Particulate / foreign matter AuroMedics Pharma LLC NDC 55150-154-10 D-0013-2023

Other recalls by Heritage Pharmaceuticals Inc

All 2021 recalls
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-583-25 D-0112-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-582-01 D-0111-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-581-01 D-0110-2026