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FDA highlights potential health risks to people exposed to altrenogest products for horses or pigs

The FDA is providing this alert because of the nature of the adverse events, some of which have occurred in teenage girls.

Friday 20 July 2018 (1 years 1 months 26 days ago)
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The U.S. Food and Drug Administration is alerting veterinary medical professionals, as well as those who work with horses and pigs, that a synthetic progesterone product commonly used in these animals may cause reproductive system disorders and other adverse effects in people who become exposed to the drug. The FDA is providing this alert because of the nature of the adverse events, some of which have occurred in teenage girls.

Altrenogest belongs to the class of drugs called progestins and is used to suppress estrus (commonly called “heat” or “season”) in mares (female horses), and to synchronize estrus in gilts (young female pigs).

The agency has received 130 reports of accidental human exposure to altrenogest products between October 6, 1987 and May 30, 2018. Some reports described exposures in more than one person. Adverse effects were reported in 137 people, including 115 women and 22 men. Eighteen of the women affected were teenage girls. Some reports have described adverse effects in girls as young as 14 years of age.

Most people became exposed when the drug contacted their skin. Some of these exposures have occurred when people, who did not administer the drug, touched product residue on barn surfaces, equipment, or treated animals.

Reproductive adverse effects reported in women and girls include abnormal or absent menstrual cycles, and in men include decreased libido. Other adverse effects reported after exposure include: headaches, fever, abdominal pain, nausea, diarrhea, vomiting and rashes.

People who should not handle altrenogest products:

  • Women who are or suspect they are pregnant.
  • Anyone with thrombophlebitis or thromboembolic disorders or with a history of these events.
  • Anyone with cerebral-vascular or coronary-artery disease.
  • Women with known or suspected carcinoma of the breast.
  • People with known or suspected estrogen-dependent neoplasia.
  • Women with undiagnosed [unexplained] vaginal bleeding.
  • People with benign or malignant tumors which developed during the use of oral contraceptives or other estrogen-containing products.
  • Anyone with liver dysfunction or disease.

It is essential that people administering altrenogest products take appropriate precautions to prevent exposing themselves or other people to the medication. Product labeling directs the use of impermeable, non-porous protective gloves when handling these drug products. These gloves should be nitrile, butyl, vinyl, polyethylene or neoprene. Disposable latex gloves may not provide adequate protection when handling these drug products. If accidental exposure does occur, it is important to wash away any drug product on skin, eyes, mouth or clothing. If adverse effects become apparent, seek medical care.

Users should be vigilant to ensure that any equipment that comes into contact with the product, as well as any drug product spilled in work areas or on the outside of the container, are adequately cleaned and decontaminated to prevent human exposure. Syringes used for administration should be replaced frequently and disposed of in a secure manner to prevent exposure to the product. The FDA has approved dosing guns for use with Regumate and Matrix. The use of these dosing guns may reduce exposure to people administering these drug products. The dosing guns are specific to the drug products for which they are approved and are not interchangeable with any other drug products. Appropriate protective gloves should always be worn when assembling, disassembling or cleaning these dosing guns or any spilled drug product.

Tuesday July 3, 2018/ FDA/ United States.
https://www.fda.gov

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