Treatment for kennel cough depends on its cause and severity, but it may include rest, supportive care and, in some cases, antibiotics prescribed by your veterinarian.
This guide walks you through exactly what works, when medications are needed and how to help your dog recover comfortably.
What Is Kennel Cough?
Kennel cough is a contagious respiratory infection in dogs, most commonly caused by a combination of bacteria and viruses that irritate the upper airways. The condition gets its name from how easily it spreads in places where dogs are in close contact — boarding facilities, dog parks, grooming salons and veterinary offices are all common settings where exposure can occur.
The most recognizable sign is a persistent, forceful cough that can sound like a honk or a gag. Though alarming to hear, it doesn't always indicate a serious illness. Some dogs may also experience a runny nose, sneezing or mild lethargy alongside the cough.
Bordetella bronchiseptica is one of the most frequently identified bacterial agents involved, though kennel cough can include multiple pathogens at once. Because the underlying cause can vary, your veterinarian is best positioned to evaluate your dog and determine whether any treatment is needed.
What Is the Best Way to Treat Kennel Cough in Dogs?
The best treatment for kennel cough in dogs depends on whether the infection is viral, bacterial or both.
Mild cases often improve with rest and supportive care, while more severe or bacterial cases may require prescription medications like antibiotics or cough suppressants.
Veterinarians typically tailor treatment based on:
- Your dog’s age and overall health
- Severity of symptoms
- Risk of complications (like pneumonia)
When Do Dogs Need Antibiotics for Kennel Cough?
Dogs need antibiotics for kennel cough when a bacterial infection is present or suspected.
While many cases are viral and resolve on their own, antibiotics may be prescribed if:
- Symptoms are severe or worsening
- Your dog is very young, senior or immunocompromised
- There is a risk of secondary bacterial infection
- The cough persists beyond expected recovery time
What Are the Available Antibiotics for Kennel Cough in Dogs?
The most commonly prescribed antibiotics for kennel cough in dogs include:
Here’s how each one works and when it may be used:
#1. Doxycycline
Doxycycline is often the first-line antibiotic for kennel cough because it targets common bacterial causes, such as Bordetella bronchiseptica.
How It Works: Doxycycline inhibits bacterial protein synthesis, targeting bacterial pathogens commonly associated with respiratory infections.
Typical Use:
- First-choice treatment in many cases
- Especially effective against respiratory pathogens
Dosing:
- Determined by your veterinarian based on your dog’s weight and condition
Possible Side Effects:
- Gastrointestinal upset (vomiting, diarrhea)
- Loss of appetite
- Sensitivity if not given with food
#2. Amoxicillin
Amoxicillin may be used when broader bacterial coverage is needed or when doxycycline isn’t appropriate.
How It Works: Amoxicillin interferes with bacterial cell wall formation, targeting susceptible bacteria.
Typical Use:
- Mild to moderate bacterial infections
- Alternative for dogs that cannot take doxycycline
Dosing:
- Determined by your veterinarian based on your dog’s weight and condition
Possible Side Effects:
- Mild digestive upset
- Allergic reactions (rare)
#3. Azithromycin
Azithromycin is sometimes used for resistant infections or specific bacterial strains.
How It Works: It slows bacterial growth by targeting protein production.
Typical Use:
- Cases that don’t respond to first-line antibiotics
- Certain respiratory infections
Dosing:
- Determined by your veterinarian based on your dog’s weight and condition
Possible Side Effects:
- Vomiting or diarrhea
- Temporary appetite changes
What Other Medications Help Treat Kennel Cough?
In addition to antibiotics, veterinarians may prescribe medications to relieve symptoms and improve comfort.
These may include:
- Cough suppressants, which may be considered for symptom management
- Anti-inflammatories, which may be discussed in cases involving airway inflammation
- Bronchodilators in more severe cases
What At-Home Remedies Help Kennel Cough in Dogs?
At-home care plays a big role in recovery, especially for mild cases.
You can support your dog by:
- Encouraging rest and limited activity
- Keeping them well-hydrated
- Offering wet or softened food
- Using steam therapy (humid bathroom air) to soothe airways
These supportive measures are commonly recommended alongside veterinary care.
How Long Does Kennel Cough Take to Go Away?
Most dogs recover from kennel cough within 1-2 weeks, though some cases may last longer.
Recovery time depends on:
- Severity of infection
- Whether treatment is needed
- Your dog’s overall health
Important: If symptoms worsen or persist, veterinary care is essential.
Frequently Asked Questions About Treating Kennel Cough
How Do You Treat Kennel Cough in Dogs Quickly?
The fastest way to treat kennel cough is early veterinary evaluation and appropriate care, which may include antibiotics if bacterial infection is present. Your veterinarian can evaluate whether antibiotics or other medications are appropriate based on the type and severity of infection. Rest and supportive care at home are also an important part of recovery.
Do All Dogs With Kennel Cough Need Antibiotics?
No, many mild cases are viral and resolve without antibiotics. Antibiotics are typically reserved for cases with suspected bacterial involvement, severe symptoms or dogs at higher risk of complications.
What Is the Best Antibiotic for Kennel Cough in Dogs?
Doxycycline is commonly the first choice, but the best option depends on your dog’s specific condition. Your veterinarian will consider your dog's age, health history and the nature of the infection when selecting the most appropriate option.
What Is the Typical Doxycycline Dose for Dogs With Kennel Cough?
Doxycycline dosing for dogs is weight-based and determined by your veterinarian based on your dog's size, age and the severity of the infection. In veterinary practice, it is commonly prescribed once or twice daily, with the specific amount and duration dependent on your dog's individual assessment. Your veterinarian will provide exact dosing instructions along with any relevant precautions, such as giving the medication with food to reduce the risk of gastrointestinal irritation.
Can Kennel Cough Go Away On Its Own?
Yes, mild cases often resolve within 1-2 weeks without medication, though monitoring is important. Your veterinarian can help you determine whether your dog's case warrants treatment or can be managed with rest and supportive care at home.
When Should I Take My Dog to the Veterinarian for Kennel Cough?
You should contact your veterinarian if your dog's symptoms worsen, last longer than expected or are accompanied by fever, lethargy or loss of appetite. Puppies, senior dogs and immunocompromised pets may need earlier evaluation, as they can be more vulnerable to complications.
Is Kennel Cough Contagious?
Yes, kennel cough is highly contagious among dogs and spreads easily through respiratory droplets or shared surfaces like water bowls, toys and bedding. Dogs are typically contagious for about 10–14 days, and transmission to humans is extremely rare. If one of your dogs is infected, contact your veterinarian about next steps for managing exposure to other pets.
How Can You Prevent Kennel Cough From Spreading at Home?
If one dog in your household is infected, separating them from other pets for about 10–14 days is the most effective way to limit spread. During that time, disinfect shared items like water bowls, toys and bedding, and monitor other pets closely for any signs of coughing or respiratory symptoms.
Does Doxycycline Interact With Other Medications?
Doxycycline can interact with certain other medications, so it is important to give your veterinarian a complete picture of everything your dog is currently taking — including any supplements. Your veterinarian will evaluate potential interactions before prescribing and will let you know if any adjustments are needed. Never start or stop a medication without consulting your veterinarian first.
What Should I Do If My Dog Misses a Dose of Doxycycline?
If you miss a dose, give it as soon as you remember — unless it is close to the time of the next scheduled dose, in which case skip the missed dose and continue as normal. Never give two doses at once to make up for a missed one. If you are unsure what to do, contact your veterinarian for guidance.
Key Takeaway
Kennel cough treatment depends on the cause and severity of the infection. Mild cases often resolve with rest and supportive care, while bacterial infections may require prescription antibiotics — typically doxycycline, amoxicillin or azithromycin, depending on your dog's needs. Your veterinarian is the best resource for determining whether medication is appropriate and which option is right for your dog.
