Oxytetracycline (Oxyject, Bio-Mycin): 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 1,242 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. Death27.9%346 reports
2. Solution, Abnormal[a product quality report, not a sign in an animal]15.1%187 reports
3. Anaphylaxis[sudden severe allergic-type reaction]14.6%181 reports
4. Injection site swelling[swelling where the injection was given]11.2%139 reports
5. Color, Abnormal[a product quality report, not a sign in an animal]10.5%130 reports
6. Lack of efficacy (bacteria) - NOS[the product did not have the expected effect: target not specified]8.8%109 reports
7. Collapse6.8%84 reports
8. Dyspnoea[difficulty breathing]5.2%64 reports
9. Hypersalivation[drooling]4.1%51 reports
10. Unclassifiable adverse event[event that fits no dictionary term]3.2%40 reports
11. Recumbency[lying down and unable or unwilling to rise]3%37 reports
12. Injection site pain[pain where the injection was given]2.9%36 reports
13. Accidental exposure[exposure that was not intended]2.7%33 reports
14. Anorexia[not eating]2.3%28 reports

The list shows 30 of 487 coded signs. A report is not proof that a drug caused a sign. Download all signs (CSV)

Reports by species

• Cattle52%646
• Horse3.4%42
• Dog3.2%40
• Human exposure3.2%40
• Cat2.8%35
• Goat2.2%27

The share is of all 1,242 reports that name oxytetracycline. 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

2026 has the reports that FDA received through Jun 2026. Download the years (CSV)

What the reports record

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

Other pages with this ingredient

A report names a drug by its set of active ingredients. Each set has its own page. The list is in order of name.

• Oxytetracycline, all combinations
• Oxytetracycline + Oxytetracycline Dihydrate
• Oxytetracycline + Polymyxin B Sulfate

Next in the A to Z list

• Orbifloxacin + Posaconazole
• Ormetoprim + Sulfadimethoxine
• Oxfendazole
• Oxibendazole
• Oxytetracycline Dihydrate
• Oxytetracycline Hydrochloride

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 045-143The FDA record of the application for Oxyject.
• Green Book record of NADA 047-278The FDA record of the application for Bio-Mycin, OXY-TET 50.
• Green Book record of NADA 095-143The FDA record of the application for Terramycin 10, Terramycin 30, Terramycin 50, Terramycin 100, Terramycin 200, Terramycin 200 Granular, Terramycin 100MR.
• Green Book record of NADA 097-452The FDA record of the application for Oxyject 100, Status SQ.
• Green Book record of NADA 108-963The FDA record of the application for Medamycin 100, Medamycin.
• Green Book record of NADA 113-232The FDA record of the application for Liquamycin LA-200.
• 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: adverse event reports that FDA received. https://petdrugreports.com/drug/oxytetracycline/ 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 13 reports in the 12 months to June 2026. It received 10 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 1,242 reports received from April 1987 to June 2026, 67.2% are about a safety issue only. 2.2% are about a lack of expected effectiveness, alone or with a safety issue. 30.6% are about a defect of the product or its package.