Cats are curious creatures. They love to explore their surroundings. Sometimes, this curiosity can lead to health problems. One such problem is lungworm infection. Lungworms are parasites that live in the lungs and airways of cats. They can cause serious health issues if left untreated.
As a cat owner, it’s important to know about lungworm medicine. This guide will explain everything you need to know. We’ll cover what lungworms are, how cats get them, symptoms to watch for, and the best treatments available. By the end, you’ll feel confident in protecting your feline friend.
What Are Lungworms?
Understanding the Parasite
Lungworms are small worms that infect the respiratory system. The most common type in cats is Aelurostrongylus abstrusus. These worms live in the lungs and airways. They lay eggs, which hatch into larvae. The larvae are then coughed up, swallowed, and passed in the cat’s feces.
How Do Cats Get Lungworms?
Cats don’t get lungworms from other cats directly. Instead, they get them from eating infected hosts. These hosts can include:
- Slugs and snails (even tiny ones on grass)
- Birds or rodents that have eaten infected slugs
- Frogs or lizards
Outdoor cats are at higher risk. But indoor cats can get infected too. Slugs can sneak into homes, or cats might chew on grass with larvae.
Signs Your Cat May Have Lungworms
Lungworm infections can be mild or severe. Some cats show no symptoms. Others may have serious breathing problems. Here are common signs to watch for:
Mild Symptoms
- Coughing (often mistaken for hairballs)
- Wheezing or noisy breathing
- Sneezing
- Mild lethargy
Severe Symptoms
- Difficulty breathing (rapid or labored breaths)
- Weight loss
- Loss of appetite
- Nasal discharge
- Pneumonia (in extreme cases)
If your cat shows any of these signs, see a vet. Early treatment prevents complications.
Diagnosing Lungworm in Cats
Vets use several methods to diagnose lungworms:
Fecal Test – Checks for larvae in the stool.
X-rays – Shows lung damage or inflammation.
Bronchoscopy – A tiny camera looks inside the airways.
Tracheal Wash – Collects mucus to check for larvae.
If lungworms are found, treatment starts right away.
Best Lungworm Medicines for Cats
Several treatments are effective against lungworms. Some are prescription-only. Others are available over the counter. Below are the most common options.
1. Fenbendazole (Panacur)
How it works: Kills worms by disrupting their metabolism.
Dosage: Given daily for 3–5 days.
Effectiveness: Highly effective against Aelurostrongylus abstrusus.
Side effects: Rare, but some cats may have mild diarrhea.
2. Ivermectin (Heartgard or Injectable Form)
How it works: Paralyses and kills the worms.
Dosage: Single injection or oral dose.
Effectiveness: Works well but not always the first choice for lungworms.
Side effects: High doses can be toxic, so vet supervision is needed.
3. Milbemycin Oxime (Interceptor or Milpro)
How it works: Prevents larvae from developing into adults.
Dosage: Monthly tablet.
Effectiveness: Good for prevention and mild infections.
Side effects: Rare, but some cats may vomit.
4. Moxidectin + Imidacloprid (Advocate Spot-On)
How it works: Applied to the skin, absorbs into the bloodstream.
Dosage: Monthly application.
Effectiveness: Kills lungworms and prevents reinfection.
Side effects: Mild skin irritation possible.
5. Praziquantel + Emodepside (Profender Spot-On)
How it works: Targets multiple parasites, including lungworms.
Dosage: Single application, repeat if needed.
Effectiveness: Broad-spectrum treatment.
Side effects: Rare, but some cats may drool after application.
How to Prevent Lungworm Infections
Prevention is always better than cure. Here’s how to protect your cat:
1. Regular Deworming
Use a monthly parasite prevention product. Advocate® or Milpro® are good choices.
2. Keep Cats Indoors
Reduces exposure to slugs, snails, and infected prey.
3. Remove Slugs from the Garden
Use pet-safe slug pellets or traps.
4. Avoid Raw or Undercooked Meat
Can contain lungworm larvae.
5. Clean Litter Boxes Frequently
Reduces the risk of reinfection.
Natural Remedies: Do They Work?
Some owners prefer natural treatments. However, lungworms are dangerous and need proper medication.
Pumpkin seeds – May help with some worms but not lungworms.
Garlic – Toxic to cats, avoid it.
Herbal dewormers – Not proven effective.
Always consult a vet before trying home remedies.
When to See a Vet
If your cat has:
- Persistent cough
- Trouble breathing
- Unexplained weight loss
…schedule a vet visit immediately.
Conclusion
Lungworms are a hidden danger for cats. They can cause serious respiratory problems if untreated. The good news is that effective medicines are available. Fenbendazole, ivermectin, and spot-on treatments like Advocate® work well.
Prevention is key. Regular deworming and keeping cats indoors help reduce risks. If you suspect an infection, see a vet right away. Early treatment ensures a quick recovery.
Your cat’s health is precious. By staying informed, you can keep them safe from lungworms and other parasites. Always follow your vet’s advice for the best care.
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