How Long Does It Take for Allergies to Leave Dogs System?

How Long Does It Take for Allergies to Leave Dogs System?

Having a pet with allergies can be a difficult and challenging situation. Luckily, dogs experience many of the same allergies humans do, so treatments and management techniques to reduce the symptoms of allergies and provide long-term relief are available. But how long does it take for pet allergies to leave a dog’s system?

What Causes Allergies in Dogs?

The cause of allergies in dogs is similar to what causes allergies in humans. Allergens can enter your pet’s body and trigger an inflammatory, allergic reaction. Common allergens in pets are food, pollen and dust mites, as well as certain environments. Some dogs may have more than one allergy.

How Long Does it Take for Allergies to Leave?

The time frame for when allergies will improve or be eliminated entirely can vary depending on the pet’s individual situation and the type of treatment they receive.

  • Treating Allergies – The length of relief depends on how effectively you treat your pet’s allergic reaction. Allergies can be treated through a combination of diet, medication, and lifestyle changes. Most times, if allergies can be controlled, symptoms should subside. Depending on the severity of the allergy, this can take anywhere from a couple of weeks to a few months.
  • Limiting Allergens – If you can limit your pet’s exposure to allergens, they may have relief sooner. Allergens can be found in the food, environment and even household items. If you are able to reduce or avoid contact with the allergens, your pet’s symptoms may improve faster.
  • Immunotherapy – This can be an effective treatment for some pets, and the results can begin to show after a few weeks. Depending on the individual pet’s situation, the symptoms may even be resolved within a few months.


The length of time for allergies to leave a pet’s system can vary. It all depends on the individual, the severity of the allergies, and what treatment options you use. With proper treatment and management, allergies can be controlled, and relief can occur in a few weeks to a few months.

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