Pet Health

What is immunotherapy (ASIT) for dogs?

Discover how ASIT immunotherapy for dogs offers a safe, effective way to treat allergies by desensitizing their immune system. Learn more about this innovative approach!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
A veterinarian administering immunotherapy treatment to a dog in a clinical setting, showcasing advanced allergy management for pets.

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Is your dog constantly scratching, licking, or dealing with recurrent skin infections? Allergies in dogs can be frustrating and uncomfortable for pets and their owners alike. If you’ve tried everything from special diets to antihistamines with little success, you may have come across a treatment called immunotherapy, also known as allergen-specific immunotherapy (ASIT). But what exactly is it, and how can it help your dog? Let’s break it down in simple, vet-approved terms.

⚠️ What to Watch For

Dogs with allergies often display specific symptoms that can range from mild to severe. Here are some common signs that your dog may be dealing with allergies:

  • Excessive scratching or licking, especially around the paws, ears, or belly
  • Recurrent ear infections
  • Red, irritated, or inflamed skin
  • Hair loss or bald patches
  • Chronic sneezing or nasal discharge
  • Hot spots or sores

If these symptoms persist despite treatment, your dog may have an underlying allergy that could benefit from immunotherapy.

🔍 Possible Causes

Allergies in dogs are caused by an overactive immune system reacting to harmless substances in the environment or diet. These substances, known as allergens, can include:

  • Pollens from grass, trees, or weeds
  • Dust mites
  • Mold spores
  • Flea saliva
  • Certain proteins in food

While avoiding allergens is ideal, it’s not always practical—especially for environmental triggers like pollen or dust. That’s where immunotherapy comes into play.

✅ What You Can Do at Home

While immunotherapy is a long-term solution, there are steps you can take at home to manage your dog’s allergies in the meantime:

  • Keep your dog’s living space clean by vacuuming frequently to reduce dust and pollen buildup.
  • Bathe your dog with hypoallergenic or medicated shampoos to soothe irritated skin and remove allergens from their coat.
  • Wash your dog’s bedding regularly in hot water to kill dust mites and remove allergens.
  • Use flea prevention year-round to avoid flea allergy dermatitis.
  • Work with your vet to identify potential food triggers and switch to a limited-ingredient or hypoallergenic diet if necessary.

These measures can provide temporary relief, but for lasting results, addressing the root cause of your dog’s allergies is key.

💡 When to Call a Vet

If your dog’s symptoms are severe, recurrent, or not improving despite your efforts, it’s time to consult your veterinarian. They can help identify the specific allergens causing your dog’s reactions and discuss whether immunotherapy is a suitable option.

Allergen-specific immunotherapy is a prescription treatment that involves exposing your dog to small, controlled amounts of the allergens they’re sensitive to. Over time, this helps retrain their immune system to tolerate these substances rather than overreacting to them.

🩺 Vet Recommendations

Immunotherapy is often recommended for dogs with moderate to severe allergies that don’t respond well to other treatments. The process typically begins with allergy testing, either through blood tests or intradermal skin testing, to identify the specific allergens affecting your dog. Once the allergens are identified, your vet will formulate a custom treatment plan.

Immunotherapy can be administered in two forms:

  • Injections: Small amounts of allergens are injected under the skin. This method requires regular vet visits or training to administer the injections at home.
  • Oral drops: Allergen extracts are given under the tongue, making this a needle-free option.

Treatment usually starts with a low dose of allergens, which is gradually increased over several months. The goal is to build your dog’s tolerance to the allergens, reducing their symptoms over time.

📋 Care Tips

Starting immunotherapy requires patience and consistency. Here are some tips to help your dog get the most out of this treatment:

  • Stick to the schedule recommended by your vet to ensure the best results.
  • Monitor your dog for any side effects, such as swelling at the injection site or increased itching, and report them to your vet.
  • Combine immunotherapy with other treatments, like antihistamines or omega-3 supplements, to manage symptoms during the initial phase.
  • Be prepared for a long-term commitment—immunotherapy can take 6–12 months to show significant improvement.

While immunotherapy isn’t a quick fix, many pet parents find it to be a game-changer for their dogs’ quality of life.

✅ Do’s and Don’ts

When it comes to immunotherapy, here’s what you should and shouldn’t do:

  • Do follow your vet’s instructions carefully for administering treatment.
  • Do keep a diary of your dog’s symptoms to track their progress.
  • Do combine immunotherapy with other supportive measures like flea prevention and regular grooming.
  • Don’t skip doses or stop treatment without consulting your vet.
  • Don’t expect immediate results—immunotherapy takes time to work.

With proper care and patience, immunotherapy can significantly reduce your dog’s allergy symptoms and improve their overall well-being.

💡 Expert Advice

Allergies can be tough to manage, but you don’t have to go it alone. Immunotherapy offers a long-term solution tailored to your dog’s specific needs. While it requires commitment, the benefits often outweigh the challenges, helping your furry friend live a happier, itch-free life.

If you’re considering immunotherapy for your dog, consult your veterinarian to determine if it’s the right option. They can guide you through the process and provide the support you need to make informed decisions about your dog’s care.

FAQs

Q: Is immunotherapy safe for all dogs?
A: Immunotherapy is generally safe, but it’s not suitable for every dog. Your vet will assess your dog’s health and allergy severity before recommending this treatment.

Q: How long does it take for immunotherapy to work?
A: It can take 6–12 months to see significant improvement. Some dogs may show earlier signs of relief, while others may need more time.

Q: Are there side effects of immunotherapy?
A: Side effects are rare but can include mild swelling at the injection site or temporary increased itching. Severe reactions are uncommon but should be reported to your vet immediately.

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References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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