Lysine
Also known as: Viralys, Enisyl, Incremin, LLysine Powder-Pure
### Administration Tips * Lysine is easiest to administer by **crushing tablets or emptying capsules** and mixing the powder directly into your cat's wet food. * Adverse stomach effects are very unlikely when given with food. ### What to Expect * Lysine **does not cure** the herpesvirus infection. If effective, it only helps to control it by reducing the severity and frequency of flare-ups. * **Lifetime therapy** may be required to manage chronic infections. > **Important Warning**: If you are purchasing over-the-counter human liquid formulations, **avoid products that contain propylene glycol**, as this can be toxic to cats.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- To prevent or reduce recurrent feline herpesvirus ocular infections
- To prevent or reduce recurrent feline herpesvirus ocular infections
- To prevent or reduce recurrent feline herpesvirus ocular infections
- As adjunctive therapy for feline herpesvirus dermatologic infections
- As adjunctive therapy for feline herpesvirus dermatologic infections
- Feline herpesvirus-1 (FHV-1) infection management
- Feline herpesvirus-1 (FHV-1) infection management
How it is given
Possible side effects
- Abdominal pain
- Diarrhea
- Nausea
- Vomiting
- Diarrhoea (mild, reversible)
Cautions & contraindications
- No specific contraindications noted
- Preparations containing propylene glycol (toxic to cats)
- There are no specific contraindications, but **caution is advised** regarding its clinical utility. Recent evidence suggests it may lack efficacy for FHV-1 and could potentially exacerbate upper respiratory disease in shelter environments. Safety in pregnant animals other than rats has not been established.
Drug interactions
- Arginine: May negate the anti-herpesvirus effects of lysine
- Calcium (oral): Concomitant use may increase calcium absorption from the gut and decrease calcium loss in the urine
Frequently asked questions
What is Lysine used for in pets?
### Administration Tips * Lysine is easiest to administer by **crushing tablets or emptying capsules** and mixing the powder directly into your cat's wet food. * Adverse stomach effects are very unlikely when given with food. ### What to Expect * Lysine **does not cure** the herpesvirus infection. If effective, it only helps to control it by reducing the severity and frequency of flare-ups. * **Lifetime therapy** may be required to manage chronic infections. > **Important Warning**: If you are purchasing over-the-counter human liquid formulations, **avoid products that contain propylene glycol**, as this can be toxic to cats.
Is Lysine safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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