Thyroxine Side Effects In Dogs: Overdose Complications and Treatments

Thyroxine Overdose in Dogs

What is Thyroxine?

  • It is a thyroid hormone supplement
  • The supplement is also known as Levothyroxine
  • It is given to dogs who have hypothyroidism and other thyroid issues
  • Typically, when the supplement is given as it is meant to, there won’t be any thyroxine side effects in dogs.

Thyroxine Side Effects Canine

If thyroxine has not been used properly, dogs will exhibit symptoms like hyperthyroidism. These symptoms include:

  • Abdominal Issues – Pain or diarrhea may happen as a result of increased bowel movements
  • Agitation
  • Changes in Mentation – Dogs may show aggression
  • Confusion
  • Confusion
  • Difficulty Breathing
  • Increased appetite
  • Increased heart rate
  • Insomnia
  • Jitteriness
  • Nausea
  • Palpitations
  • Restlessness – The dog will seem like it cannot stay in one place or in one position for long.
  • Shortness of Breath – Panting
  • Weight loss – This can happen when the dog has been given increased dosages for a long period of time.

Acute cases of thyroxine overdose can cause the following symptoms:

  • Hypoglycemia
  • Heart Failure
  • Coma
  • Fever
  • Adrenal Insufficiency

It is important to treat overdose as soon as possible because if left untreated, it can be fatal for dogs.

Treatment of Thyroxine Overdose

The goal of treatment would be to decrease the amount of thyroxine in the dog’s body.

  • Gastric Lavage – Done to remove any remaining thyroxine in the stomach
  • Activated Charcoal – Helps to absorb the thyroxine in the dog’s intestines
  • Fluid therapy
  • Dialysis

Prevention of Overdose

  • Regulate doses properly – Since thyroxine is a maintenance drug, it is important to make sure that dogs only take the right amounts.

Store Supplements Out of Dog Access – Accidental ingestion can also lead to thyroxine overdose. Store the drug in the right place so that the dog cannot get at it.

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