Oxytetracycline Hydrochloride (TERRAMYCIN-343, Terramycin): adverse event reports that FDA received

Signs that the reports list

A sign is a coded term from the report. The words in brackets are a plain gloss of the term. The percentage is the share of the 432 reports that list the sign. One report can list more than one sign.

The sign that is in the largest number of the reports comes first.

1. Color, Abnormal[a product quality report, not a sign in an animal]14.8%64 reports
2. Death13.4%58 reports
3. No sign[no clinical sign was reported]9.3%40 reports
4. Granules/Powder, Abnormal8.6%37 reports
5. Lack of efficacy (bacteria) - NOS[the product did not have the expected effect: target not specified]7.9%34 reports
6. Residues in eggs7.6%33 reports
7. Accidental exposure[exposure that was not intended]5.8%25 reports
8. Seal, Abnormal[a product quality report, not a sign in an animal]5.8%25 reports
9. Solution, Abnormal[a product quality report, not a sign in an animal]4.6%20 reports
10. Unclassifiable adverse event[event that fits no dictionary term]4.6%20 reports
11. Odor, Abnormal[a product quality report, not a sign in an animal]4.4%19 reports
12. Containers, Damaged[a product quality report, not a sign in an animal]3.9%17 reports
13. Anaphylaxis[sudden severe allergic-type reaction]3.2%14 reports
14. Residues in meat/offal3.2%14 reports

The list shows 30 of 118 coded signs. A report is not proof that a drug caused a sign. Download all signs (CSV)

Reports by species

• Chicken32.6%141
• Cattle13.7%59
• Human exposure5.8%25
• Other Birds3.9%17
• Other1.9%8
• Sheep1.9%8

The share is of all 432 reports that name oxytetracycline hydrochloride. The other reports give a different species or no species.

Reports for each month, Jul 2021 to Jun 2026

The month is the month in which FDA received the report. Each chart has its own scale. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.

Reports by year

• Dog
• Cat
• Horse
• Other or not given

2022 has the reports that FDA received through Aug 2022. Download the years (CSV)

What the reports record

Each bar is on a scale of 0 to 100%.

Next in the A to Z list

• Oxytetracycline
• Oxytetracycline + Oxytetracycline Dihydrate
• Oxytetracycline + Polymyxin B Sulfate
• Oxytetracycline Dihydrate
• Oxytocin
• Pegbovigrastim
• Penicillin G Benzathine + Penicillin G Procaine
• Penicillin G Procaine

All drugs by active ingredient. Brand names A to Z

FDA pages for this drug

• How to Report Animal Drug and Device Side Effects and Product ProblemsThe FDA page that tells an owner or a veterinarian how to send a report.
• Green Book record of NADA 008-622The FDA record of the application for TERRAMYCIN-343, Terramycin, Terramycin Soluble Powder Concentrate.
• Green Book record of NADA 008-769The FDA record of the application for Liquamycin Injectable, Terramycin Injectable.
• Green Book record of NADA 008-804The FDA record of the application for TM-50, TM-50 D, TM-100, TM-100D.
• Green Book record of NADA 038-200The FDA record of the application for OXY WS.
• Green Book record of NADA 130-435The FDA record of the application for OXYMarine, Oxytet Soluble.
• Green Book record of ANADA 200-026The FDA record of the application for Pennox 343.
• Animal Drugs @ FDAThe search page of the Green Book, the FDA list of approved animal drugs.

The site checked these addresses on 2 Oct 2026. The links open in a new tab.

Cite this page

Pet Drug Reports. Oxytetracycline Hydrochloride: adverse event reports that FDA received. https://petdrugreports.com/drug/oxytetracycline-hydrochloride/ Source: FDA Center for Veterinary Medicine, openFDA Animal and Veterinary adverse event reports, export of 30 Oct 2026. Reports received through 26 Jun 2026.

Where the data come from

Questions about these reports

Which brand are these reports about?

The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand. The Green Book section of this page lists the brand names with this active ingredient.

Do the reports show that the drug caused the signs?

No. FDA states this about the data.

When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event.

The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.

FDA Center for Veterinary Medicine. Source: Adverse Event Reports for Animal Drugs and Devices

How many reports did FDA receive in the latest 12 months?

FDA received no reports in the 12 months to June 2026. It received no reports in the 12 months before. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.

What kinds of report are in the count?

Of the 432 reports received from January 1987 to August 2022, 66.2% are about a safety issue only. 0.9% are about a lack of expected effectiveness, alone or with a safety issue. 32.9% are about a defect of the product or its package.