Feline Leukemia Virus

Symptoms, Causes & Natural Remedies

Feline Leukemia Virus (FeLV) is a viral infection that affects domestic and wild cats worldwide. FeLV is responsible for many health problems in cats, including immune system suppression, anemia, and even cancer. It is estimated that 2-3% of all cats are infected with FeLV worldwide. Most cats can live long, healthy and happy lives with feline leukemia virus, given the right nutritional & environmental support.

In this guide, we will discuss the symptoms, causes, and natural treatments of FeLV, as well as the confusion about this virus being a type of cancer.

Symptoms of Feline Leukemia Virus (FeLV)

The symptoms of FeLV can vary depending on the stage of the disease and the cat’s immune system response. Some cats may not show any signs of illness for several months or even years after infection, while others may develop severe symptoms within a few weeks of infection.

The common symptoms of FeLV include:

  • Loss of appetite and weight loss
  • Lethargy and weakness
  • Enlarged lymph nodes
  • Fever
  • Anemia
  • Respiratory infections
  • Diarrhea and vomiting
  • Skin infections
  • Eye problems, including inflammation and discharge
  • Seizures and other neurological problems
  • Behavioral changes, including aggression and depression

If you notice any of these symptoms in your cat, it is important to take them to the veterinarian for a check-up and testing.

Causes of Feline Leukemia Virus (FeLV)

FeLV is caused by a retrovirus that infects cats. The virus is spread through direct contact with an infected cat’s bodily fluids – such as saliva, urine, and feces. Kittens and senior cats are at a higher risk of infection, as they typically have underdeveloped or suppressed immune systems. 

FeLV is not contagious to humans or other animals, but it is contagious between cats. Cats that live in multi-cat households or in outdoor environments are at a higher risk of infection.

Natural Treatments for Feline Leukemia Virus (FeLV)

There is no known cure for FeLV, but there are natural treatments that can help boost your cat’s immune system and improve their quality of life. Here are some natural treatments for FeLV:

  1. A Healthy Diet: A balanced, fresh food diet can help boost your cat’s immune system and provide them with the necessary nutrients to fight off infections. Feed your cat a species appropriate diet of high-quality protein, vitamins, and minerals.
  2. Immune-Boosting Supplements: There are several natural supplements that can help boost your cat’s immune system, including antioxidant enzymes, vitamins C and E, omega-3 fatty acids, and probiotics.
  3. Herbal Remedies: Several herbs, including echinacea, astragalus, and cat’s claw, have immune-boosting properties and can help fight off infections.
  4. Stress Reduction: Stress can weaken your cat’s immune system, so it is important to create a calm and comfortable environment for your cat. Provide your cat with plenty of mental enrichment, as well as a quiet space to relax – and reduce exposure to loud noises and other stressful stimuli.

Confusion about Feline Leukemia Virus (FeLV) and Cancer

FeLV is often confused with cancer because of the name. While the virus can cause cancerous tumors in cats, it’s not guaranteed that it will. FeLV is a virus, not a type of cancer. FeLV weakens the immune system, making cats more susceptible to infections and diseases, including cancer.


FeLV is a serious viral infection that can cause many health problems in cats, including immune system suppression, anemia, and cancer. If caught in earlier stages, cats with feline leukemia virus can live long, healthy lives just like any other kitty by feeding a quality diet and offering nutritional supplements to boost the immune system.



FeLeuk Kit for Cats

The FeLeuk Kit combines our powerful anti-viral Vira-X with our immunity boosting CATalyst. By simply adding these all-natural liquid formulas to your cat’s diet, you will be giving him/her the best tools needed for a longer and healthier life. This kit provides the essential ingredients needed to naturally and effectively help remedy & prevent FeLV and other viral & immunodeficiency disorders.



Sources & References:
Why Choose to Autoship? (available in US only)
  • Automatically re-order your favorite products on your schedule & save 5%.
  • Easily change the products or shipping date for your upcoming Scheduled Orders.
  • Pause or cancel any time.