Welcome to Sphynxlair! Connect with Sphynx owners & enthusiasts around the world!


Staff member
Jan 13, 2009
Lysine or L-Lysine can be used to treat upper respiratory problems in your sphynx cat and also help with the symptoms of Feline Herpes. Many Sphynx owners have found Lysine helps in the aid of minor cold symptoms like sneezing, runny eyes and coughing. It's generally sprinkled into the food or given as treats. Lysine can be found in most Nutrition centers or even Walmart. In many cases the cat has contracted a URI (upper respiratory infection) and must be treated with an antibiotic, Clavamox is not always effective for some sphynx cats. Orbax seems to help and many use Doxycline for more severe cases/remedies as it covers a wider spectrum.

Lysine Can Help & Prevent The Following:
  • Feline herpes symptoms
  • Cold sores
  • Fever blisters
  • Upper respiratory infections (URI) symptoms
  • Conjunctivitis (eye discharge, swollen, irritated, red, itchy, dry, cloudy)
  • Squinting
  • Sneezing
  • Sinus congestion or discharge
  • Throat and mouth sores
  • Lethargy
What Is L-Lysine you ask?
L-lysine is an antiviral medication that helps control and treat the feline herpes virus in your Sphynx cat. L-lysine displaces arginine, an amino acid that is necessary for the feline herpes virus to replicate.

What Does L-Lysine Do?
L-lysine reduces the symptoms of a herpes flare-up as well as common cold symptoms in sphynx cats.
L-lysine has been shown to reduce the symptoms of feline herpes, including conjunctivitis, corneal ulcers and congestion. Regular use of L-lysine also reduces viral shedding and mitigates viral flare-ups in cats.

L-Lysine Products
L-lysine can be administered to cats in a various forms, the most common of which is Viralys powder, which can be sprinkled over food. It is also available as Viral gel, Enisyl-F lysine gel and Enisyl-F lysine treats.

Recommended Dosage
Many Sphynx cat owners use Lysine treats or powder the food to boost their Sphynx immune systems. Most people use about 250 mg -500 mg sprinkled over food, 250 mg being the most common for a "maintenance" type dose and 500 mg if your kitty has symptoms of a cold or herpes flare up (see your vet for proper dosage).

See your vet for proper dosage and treatment of this disease.

Sphynx Cat Community

Disclaimer: I am not a vet. See your vet for proper dosage and recommendations.
Last edited: