Evidence-Based Remedies for Heartworm in Dogs

Modified on Jan 08, 2025 | Deirdre Layne

Heartworm is a parasitic infection caused by the mosquito-borne roundworm Dirofilaria immitis. This serious condition primarily affects the heart and lungs of dogs, leading to severe complications if left untreated. Prevention is key, as heartworm treatment is costly and involves significant risks.

Proven Natural Remedies and Supplements

The following natural options are based on research and anecdotal evidence from veterinary practitioners and pet owners. These remedies focus on prevention, immune system support, and supplementary treatment for dogs undergoing conventional therapy.

1. Diatomaceous Earth (DE)

Food-grade diatomaceous earth is an effective, natural way to eliminate internal parasites in dogs. While not a direct cure for heartworm, DE can help reduce other parasites that may weaken your dog’s immune system.

Usage: Add 1 teaspoon of food-grade DE per 25 lbs of body weight to your dog's food daily. Ensure plenty of fresh water is available.

2. Coenzyme Q10 (CoQ10)

CoQ10 is a powerful antioxidant that supports heart health, which is crucial for dogs undergoing heartworm treatment or at risk of infection.

Usage: Administer 1 mg of CoQ10 per pound of body weight daily. For a 50-pound dog, use a 50 mg capsule or liquid equivalent.

3. Hawthorn (Crataegus spp.)

Hawthorn is a heart-strengthening herb commonly used in dogs with heart conditions. It supports circulation, reduces inflammation, and enhances cardiac function.

Usage: Use a hawthorn extract formulated for pets. Follow the dosage instructions provided by the manufacturer or consult your veterinarian.

4. Omega-3 Fatty Acids

Omega-3 supplements, like fish oil, promote overall cardiovascular health and reduce inflammation, which is beneficial for dogs at risk of or recovering from heartworm infection.

Usage: Provide 1000 mg of fish oil for every 30 pounds of body weight daily. Choose a high-quality, mercury-free product.

5. HWF (Heartworm Free)

HWF is a natural blend of herbs to support a dog’s cardiovascular health and immune response. It’s commonly used as a preventive measure or in conjunction with veterinary-approved treatments.

Usage: Follow the manufacturer’s instructions for dosage. Typically, this liquid supplement is given orally on food.

6. Milk Thistle (Silybum marianum)

Milk thistle supports liver function, essential for dogs undergoing heartworm treatment due to the stress of medications on the liver.

Usage: Provide 1/4 teaspoon of powdered milk thistle seed per 20 pounds of body weight daily. For liquid extracts, consult your veterinarian for the proper dosage.

Prevention Tips

Preventing heartworm is far easier than treating it. Here are some actionable tips:

  • Limit mosquito exposure by keeping your dog indoors during peak mosquito activity (dawn and dusk).
  • Use natural mosquito repellents, such as sprays containing neem or eucalyptus oil, safe for dogs.
  • Maintain a healthy diet rich in vitamins and minerals to boost your dog’s immune system.
  • Consider routine testing for heartworm as part of your dog’s annual veterinary check-up.

When to Seek Veterinary Care

While natural remedies can be effective, heartworm is a serious condition requiring professional care. If your dog is diagnosed with heartworm, work with your veterinarian to develop a treatment plan. Natural remedies can complement conventional treatments but should not replace them entirely.

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