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Medication Errors Happen to Pets, Too

"A number of the medication errors that occur in the treatment of people are similar to those we are seeing in the treatment of animals," says Linda Kim-Jung, PharmD, an FDA safety reviewer.

Your dog or cat is sick, and you head to the animal hospital. The veterinarian prescribes medications that you hope will make your friend better.

But with pets, as with people, medication errors can happen. Pet owners may mistakenly be given the wrong medicine for any number of reasons.

Prescriptions for pets are sometimes filled in the same pharmacies that serve human patients. Errors can start with something as simple as abbreviations.

"Unclear medical abbreviations are a common cause of the medication errors we find," Linda Kim-Jung, PharmD, a safety reviewer in the Center for Veterinary Medicine's Division of Veterinary Product Safety, says. She explains that, in school, future veterinarians are taught to use abbreviations to save time when writing prescriptions or writing notes in animal patient records.

But there are different systems of abbreviations taught in veterinary and medical schools, and a veterinarian might be more familiar with one than another. Or a pharmacist in a human pharmacy may not be familiar with veterinary abbreviations.

"Poor penmanship can add to the problem, too," Kim-Jung notes. 

For example, after reviewing reports of medication errors with animal drugs, the Center for Veterinary Medicine found that the abbreviation "SID" (once daily) in prescriptions was misinterpreted as "BID" (twice daily) and "QID" (four times daily), resulting in drug overdoses.

Kim-Jung says that transcription errors can occur as a result of misinterpreting problematic abbreviations such as "U" (units) for "0," or "mcg" (microgram) for "mg" (milligram), or when prescriptions are written with leading or trailing zeros.

"So, a 5 mg dose written with the trailing zero as 5.0 mg can be misread as 50 mg, or a 0.5 mg dose written without the leading zero as .5mg can easily be mistaken for 5 mg, potentially resulting in a 10 times overdose if the order is not clearly written," Kim-Jung explains.

In addition, product selection errors can occur because of labels or packaging that looks alike. Similarly, a wrong drug may be dispensed if the drug names look alike when written on a prescription, or if the drug names sound alike during verbal orders.

Moreover, there are numerous opportunities throughout the treatment process for different people to misinterpret or misread what is written or typed on the medication's label.

"Mistakes can happen at the veterinary clinic, but also in the pharmacy which fills the prescription, and at home, when the pet owner gives the animal the meds," Kim-Jung says.

Ask Questions

Kim-Jung suggests a number of things you can do to prevent such an occurrence. "Start by asking good questions," she says, such as:

  • What is the name of the drug? What is it supposed to do?
  • How much of the medication should I give each time?
  • How many times a day should I give it?
  • Should I give it before, during or after meals?
  • How should I store it?
  • What should I do if I forget to give a dose to my pet?
  • Should I finish giving all the medication, even if my pet seems better?
  • Are there reactions I should look for and call you about right away?

And sharing information is a two-way street, Kim-Jung says, especially if you are getting a new prescription or seeing a new veterinarian. Be sure to:

  • Keep a list of drugs that your animal is taking—including over-the-counter products, supplements and prescription drugs—and bring it with you to the veterinary office.
  • Discuss any medications that your animal is allergic to or that have caused problems in the past.
  • Discuss any serious or chronic health conditions that your animal may have.

Finally, there are some simple steps you can take at home to avoid medication errors:

  • Keep pet drugs stored away from human drug products to prevent mix-ups.
  • Keep your animal's medications in their original labeled containers.
  • Do not share the medication for one animal with another animal unless directed by the veterinarian.
  • Do not give human medications to your animal unless directed by the vet.

The Food and Drug Administration encourages veterinarians, pharmacists, and pet owners to report side effects from medications to the drug manufacturer first, whose contact information can usually be found on the product labeling. Manufacturers are required by law to notify the Center for Veterinary Medicine about reports of negative effects.

You can also report medication issues directly to FDA. For a copy of the reporting form and more information on how to report problems, visit fda.gov.

Editor's Note: This information was provided by the FDA.

Want to adopt a rescued dog or cat? Contact Dunedin Doggie Rescue, Suncoast Animal League or Pinellas County Animal Services. Looking for a local veterinarian? Search our directory.

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