How to Treat Cat Respiratory Infection at Home

How to Treat Cat Respiratory Infection at Home: Supportive Care Guide

Upper respiratory infections (URIs) are extremely common in cats — so common that they're often called "cat colds." While most mild cases can be managed with supportive home care, respiratory infections in cats can escalate quickly, especially in kittens, senior cats, or immunocompromised animals. This guide covers what you can do at home and when veterinary care is essential.

What Is a Cat Respiratory Infection?

Feline upper respiratory infection (URI) is an infection of the nose, throat, and sinuses. It's most commonly caused by:

• Feline herpesvirus (FHV-1): Responsible for approximately 50% of feline URIs. Most cats are exposed as kittens; the virus remains latent and reactivates during stress or illness.
• Feline calicivirus (FCV): Causes approximately 40% of URIs, often with mouth ulcers.
• Chlamydophila felis: Bacterial infection causing primarily eye and nasal symptoms.
• Bordetella bronchiseptica: Bacterial infection, more common in shelter environments.
• Mycoplasma: Often a secondary bacterial infection.

Signs of Respiratory Infection in Cats

• Sneezing (frequent or in bouts)
• Nasal discharge (clear, yellow, or green)
• Eye discharge or conjunctivitis
• Congestion or noisy breathing
• Reduced appetite (cats rely heavily on smell to stimulate appetite)
• Lethargy
• Fever
• Mouth ulcers (calicivirus)
• Drooling
• Coughing (less common)

Supportive Home Care

Most mild URIs in healthy adult cats resolve within 7–10 days with supportive care. The goal is to keep your cat comfortable, maintain hydration and nutrition, and prevent secondary complications.

1. Steam Therapy for Congestion

Steam helps loosen nasal congestion and makes breathing easier. Run a hot shower and sit with your cat in the steamy bathroom for 10–15 minutes, 2–3 times daily. Never apply steam directly to your cat or use a humidifier with essential oils — many are toxic to cats.

2. Keep Nasal and Eye Discharge Cleaned

Discharge crusts around the nose and eyes, causing discomfort and blocking airways. Gently wipe away discharge with a warm, damp cloth several times daily.

For eye discharge, HICC PET Eye Wipes for Dogs & Cats are hypoallergenic, gentle wipes that safely remove eye discharge and crust without irritating sensitive eyes. Use a fresh wipe for each eye.

3. Encourage Eating and Drinking

Congested cats often lose their appetite because they can't smell their food. To encourage eating:

• Warm wet food slightly to enhance aroma
• Offer strong-smelling foods like tuna or sardines in water
• Try different textures — some congested cats prefer pâté over chunks
• Hand-feed if necessary
• Ensure fresh water is always available

A cat that stops eating for more than 24–48 hours is at risk of hepatic lipidosis — contact your vet if appetite loss is significant.

4. Keep Your Cat Warm and Comfortable

Provide a warm, quiet, draft-free resting area. A self-warming cat bed helps maintain body temperature, which supports immune function during illness.

5. Reduce Stress

Stress suppresses immune function and can trigger herpesvirus reactivation. Minimize disruptions to your cat's routine, provide a quiet space, and avoid introducing new pets or major changes during recovery.

6. Support Immune Health

A daily probiotic supports immune function during illness. Premo Pet Probiotic for Cats is a tasteless powder that mixes into food and supports both gut health and immune regulation — particularly helpful during and after antibiotic treatment.

7. Monitor Temperature

Check your cat's temperature daily during illness. Use the iProven Pet Thermometer DTK-117Y for accurate readings. Normal is 100.5–102.5°F. A fever above 104°F requires prompt veterinary attention.

What NOT to Do

• Don't give human cold medications — decongestants, antihistamines, and pain relievers can be toxic to cats
• Don't use essential oil diffusers near your cat — many are toxic to the respiratory system
• Don't ignore worsening symptoms
• Don't allow your cat to become dehydrated

When to See the Vet

Contact your vet if your cat:

• Has difficulty breathing or open-mouth breathing
• Has a fever above 104°F (40°C)
• Stops eating for more than 24–48 hours
• Has thick yellow or green discharge (indicates bacterial infection needing antibiotics)
• Is a kitten, senior, or immunocompromised
• Doesn't improve after 5–7 days of home care
• Is getting worse rather than better
• Has mouth ulcers or significant drooling

Preventing Respiratory Infections

• Keep vaccinations current — the FVRCP vaccine protects against herpesvirus and calicivirus
• Reduce stress, which triggers herpesvirus reactivation
• Quarantine new cats before introducing them to resident cats
• Maintain good hygiene in multi-cat households

Final Thoughts

Most mild cat respiratory infections resolve with supportive home care within 7–10 days. Keep your cat warm, well-nourished, and hydrated, clean discharge regularly, and monitor closely for signs of deterioration. When in doubt, call your vet — early intervention prevents mild infections from becoming serious complications.