Viralys Powder for Cats

Vetoquinol Viralys Daily L-Lysine Powder for Cats and Kittens – 100g

(Fish Flavored Immune Supplement)

What Is Vetoquinol Viralys L-Lysine Powder for Cats?

Vetoquinol Viralys Powder is a veterinary-formulated oral L-Lysine supplement specifically designed to support feline immune system health, respiratory function, and eye comfort. Ideal for cats and kittens aged 6 weeks and older, this palatable fish & poultry-flavored powder helps manage common symptoms associated with feline herpesvirus (FHV-1) — a major cause of upper respiratory infections and eye inflammation in felines.

The product contains L-Lysine Hydrochloride, an essential amino acid known to inhibit the replication of FHV-1, while also helping to maintain a strong immune response and reduce viral flare-ups in multi-cat households or shelter environments.

What Are the Benefits of Viralys L-Lysine Powder for Cats?

Viralys Powder offers both preventive and supportive care for cats prone to feline respiratory and ocular issues:

Immune System & Respiratory Health

• Supports a healthy immune response to viral infections
• Helps manage FHV-1 symptoms such as sneezing, nasal discharge, and conjunctivitis
• Reduces frequency and severity of flare-ups in stressed or immunocompromised cats

Ocular Comfort

• Promotes normal eye function by supporting conjunctival and corneal health
• Assists with reducing eye discharge and inflammation due to viral infections

Highly Palatable Formula

• Fish & poultry flavor enhances taste and improves compliance, especially in picky eaters
• Can be easily mixed into wet or dry food without affecting texture

Vet-Recommended L-Lysine Supplement

• Backed by veterinarians as a daily immune support supplement
• Ideal for long-term use in adult cats and kittens (6 weeks and older)

Dosage and Administration

Always consult your veterinarian for exact dosage instructions depending on your pet's condition.

• Kittens under 6 months: 250 mg (approx. ½ scoop) twice daily
• Cats over 6 months: 500 mg (approx. 1 scoop) twice daily
• Mix powder with food or feed directly.
• For best results, administer consistently and monitor for signs of improvement.

What Are the Ingredients in Vetoquinol Viralys Powder?

Active Ingredient:

Inactive Ingredients:

• Brewer’s Dried Yeast, Hydrolyzed Vegetable and Animal Gelatin, Poultry Liver Enzymatic Hydrolysate, Fish Liver Hydrolysate, Sodium Acid Pyrophosphate, Sodium Benzoate

L-Lysine Hydrochloride: A bioavailable form of lysine, an essential amino acid that helps block arginine — a key element needed by FHV-1 to replicate.

Are There Any Side Effects of L-Lysine for Cats?

Viralys L-Lysine is generally well tolerated. However, mild side effects may include:

• Vomiting or decreased appetite if taken on an empty stomach
• Gastrointestinal upset in sensitive cats

Discontinue use if adverse reactions occur and consult your veterinarian.

What Are the Warnings or Precautions?

• Not tested for use in pregnant or breeding animals
• Keep out of reach of children and pets
• Store in a cool, dry place
• Not intended to treat or cure disease; formulated to support immune health

Shipping & Returns

Shipping Policy: HardyPaw offer all types of shipping options (Ground, Express, Priority, International) depending on the urgency of the product requirements. To know about our shipping policy in detail, click here.

Refund policy: If you face any issue with our product and want to return it, read our refund policy carefully.

Vetoquinol Viralys Powder FAQs

What is Vetoquinol Viralys Powder used for?

Viralys Powder supports immune health in cats and kittens, especially those affected by feline herpesvirus (FHV-1). It helps manage respiratory and eye-related symptoms.

How long can cats stay on L-Lysine powder?

L-Lysine is safe for long-term daily use. Many cats with chronic FHV-1 benefit from consistent supplementation to reduce flare-ups.

Is this safe for kittens under 6 months?

Yes, kittens over 6 weeks of age can safely take Viralys Powder. Use a reduced dose (½ scoop twice daily) as recommended.

Can I mix this with wet food?

Yes! Viralys is designed to be mixed into food. Its fish and poultry flavor makes it palatable even for finicky cats.

Does L-Lysine cure feline herpesvirus?

No. L-Lysine does not cure FHV-1 but helps manage the symptoms and reduce the frequency of flare-ups by supporting the immune system.

High Authority Medical References:

• Feline Herpesvirus 
• L-Lysine for Cats 
• Amino Acids in Feline Diets
• Upper Respiratory Infections in Cats