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FDA Animal Drug Safety Communication: Micotil 300 User Safety Alert

FDA Animal Drug Safety Communication: Micotil 300 User Safety Alert

9/12/2017 2:23:00 PM/Categories: Popular Posts, General News, Livestock, National News

September 11, 2017

The U.S. Food and Drug Administration is alerting cattle and sheep owners, farmworkers, veterinarians, physicians, emergency medical technicians, and other health care providers about the potential hazards to people exposed to the animal drug Micotil 300 (tilmicosin). Micotil 300 is a prescription injectable antibiotic used to treat respiratory disease in cattle and sheep.

Since its approval in 1992, there have been more than 2,200 adverse event reports involving people exposed to Micotil 300. These include multiple reports of injury, including death, in people following injection of Micotil 300. Other routes of exposure, including by mouth or skin, have also led to injury. Most of the reported human exposures were accidental and many cases required medical attention. While the circumstances remain unclear in some cases, there have been 25 reports involving human death. Although a majority of the deaths were due to intentional self administration of the drug, some deaths were reported following accidental injection.

People exposed to Micotil 300 should immediately seek medical care. There is no antidote for Micotil 300. This drug has been shown to have toxic effects on the human heart. In some cases of exposure, people required hospitalization and prolonged medical care; some people have died despite receiving medical care. Injections in people of less than 0.5 ml (1/10 teaspoon) have been associated with pain and bleeding at the injection site, while larger volumes have been associated with nausea, dizziness, rapid heart rate, and death.

Elanco Animal Health, a subsidiary of Eli Lilly and Company, distributes Micotil 300 and has made efforts to warn and educate people about the human health risks associated with this product and to provide training to users and veterinarians on safe handling and use of Micotil 300. Elanco is currently working in consultation with the FDA to further address this issue.

It is crucial that every person who handles Micotil 300 has been appropriately trained to use the drug safely, and understands the risks to people handling this drug. Livestock environments can be unpredictable and potentially hazardous. This can increase the risk of accidental exposure to Micotil 300. The prescribing information for Micotil 300 includes important information for users in a section called SAFE HANDLING PRACTICES WHEN USING MICOTIL® 300 TILMICOSIN INJECTION.

FDA encourages you to report any adverse events in people associated with the use of Micotil 300. Human adverse experiences should be reported to Rocky Mountain Poison and Drug Center (RMPDC) at 1-800-722-0987 or Elanco Animal Health at 1-800-428-4441. For information about adverse drug experience reporting for animal drugs, contact FDA at 1-888-FDA-VETS or online at https://www.fda.gov/AnimalVeterinary/SafetyHealth/ReportaProblem/ucm055305.htm.

The labeling for Micotil 300 (NADA 140-929) contains the following boxed warnings presented in English and Spanish:

Human Warnings: Not for human use. Injection of this drug in humans has been associated with fatalities. Keep out of reach of children. Do not use in automatically powered syringes. Exercise extreme caution to avoid accidental self-injection. In case of human injection, consult a physician immediately and apply ice or cold pack to injection site while avoiding direct contact with the skin. Emergency medical telephone numbers are 1-800-722-0987 or 1-800-428-4441. Avoid contact with eyes.


Note To The Physician: The cardiovascular system is the target of toxicity and should be monitored closely. Cardiovascular toxicity may be due to calcium channel blockade. In dogs, administration of intravenous calcium offset Micotil-induced tachycardia and negative inotropy (decreased contractility). Dobutamine partially offset the negative inotropic effects induced by Micotil in dogs. β-adrenergic antagonists, such as propranolol, exacerbated the negative inotropy of Micotil in dogs. Epinephrine potentiated lethality of Micotil in pigs. This antibiotic persists in tissues for several days.

Contact FDA

240-402-7002
240-276-9115 FAX
Issued by: FDA, Center for Veterinary Medicine

7519 Standish Place, HFV-1

Rockville, MD 20855
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