Vivaldis EasyPill L-Lysine Cat | L-Lysine HCl Complementary Feed | Feline Herpesvirus FHV-1 Respiratory & Immune Support | 30 Palatable Pellets

For use in cats. Administer as directed. Keep out of reach of children. Store in a cool, dry place away from direct sunlight; keep container tightly sealed after use.

Vivaldis EasyPill L-Lysine Cat — L-Lysine HCl Complementary Feed (30 Palatable Pellets)

Vivaldis EasyPill L-Lysine Cat is a patented French complementary feed delivering L-Lysine Hydrochloride (L-Lysine HCl) in 30 highly palatable pellets for cats. Developed by EasyPill (Enjoy Care) with patented innovation and manufactured in France, EasyPill L-Lysine Cat supports feline respiratory health and immune function — primarily indicated for cats affected by or at risk of Feline Herpesvirus Type 1 (FHV-1) infection and associated upper respiratory tract disease including sneezing, nasal discharge, conjunctivitis, and ocular discharge. The highly palatable pellet format ensures voluntary, stress-free daily supplementation for cats of all breeds and ages.

Key Ingredient & Mechanism

• L-Lysine Hydrochloride (L-Lysine HCl) — per pellet (confirm dose from label): L-Lysine is an essential amino acid — cats as obligate carnivores cannot synthesise Lysine de novo and must obtain it from diet or supplementation; the primary veterinary indication for L-Lysine supplementation in cats is management of Feline Herpesvirus Type 1 (FHV-1, Feline Rhinotracheitis Virus) — the most prevalent cause of feline upper respiratory tract disease; mechanism: (1) arginine antagonism — FHV-1, like all alpha-herpesviruses, is an obligate intracellular pathogen requiring the amino acid arginine for viral replication; L-Lysine and arginine share the cationic amino acid transporter CAT-1 (SLC7A1, y⁺ transport system) for intestinal absorption and cellular uptake; supplemental L-Lysine competitively inhibits arginine uptake at both the intestinal epithelial level (reducing dietary arginine absorption) and at the cellular level (reducing intracellular arginine availability for FHV-1 replication machinery); (2) reduced viral replication and shedding — intracellular arginine depletion impairs FHV-1 nucleocapsid protein synthesis, viral DNA packaging, and mature virion assembly, reducing viral particle production and oronasal viral shedding; this reduces the frequency and severity of FHV-1 clinical flare-ups triggered by stress, corticosteroid administration, or concurrent illness; (3) immune support — L-Lysine supports lymphocyte proliferation, immunoglobulin (IgG, IgA, IgM) production, and T-cell mediated immune responses; it also contributes to collagen synthesis (Lysyl hydroxylase-mediated hydroxylation of procollagen Lysine residues to hydroxylysine, required for stable collagen triple helix crosslinking), supporting respiratory mucosal epithelial integrity; (4) HCl salt formulation advantage — L-Lysine HCl is the most bioavailable and stable form of L-Lysine; the hydrochloride salt improves solubility, palatability, and GI absorption compared to free base L-Lysine; (5) note on arginine balance in cats — cats have an absolute dietary arginine requirement (near-absent pyrroline-5-carboxylate synthase activity makes de novo arginine synthesis physiologically impossible in cats; arginine deficiency causes rapid hyperammonaemia and can be fatal); L-Lysine supplementation at recommended doses for FHV-1 management is calibrated to competitively reduce arginine availability to the virus without causing clinically significant arginine deficiency at label-recommended doses; do not exceed recommended doses without veterinary guidance

Therapeutic Class

• Veterinary amino acid complementary feed — L-Lysine HCl — feline herpesvirus FHV-1 management, respiratory health, immune support — cats all breeds and ages — patented French innovation, Made in France

Indications

• Feline Herpesvirus Type 1 (FHV-1) management — reduction of sneezing, nasal discharge, conjunctivitis, ocular discharge, and corneal ulceration
• Feline upper respiratory tract infection (URI) immune and mucosal support
• Prevention of FHV-1 recurrence during stress events — boarding, rehoming, new pet introduction, seasonal change
• Daily respiratory wellness maintenance for FHV-1-positive cats
• Adjunct to antiviral therapy (famciclovir) under veterinary supervision

Dosage & Administration

• Confirm dose per pellet and daily dose from product label
• Offer directly as a treat or alongside food; 30 palatable pellets per pack
• Or as directed by a veterinarian

Safety Information

• L-Lysine HCl is generally well tolerated in cats at recommended doses; mild GI upset is uncommon
• Use at label-recommended doses; very high Lysine supplementation without veterinary guidance is not recommended
• Store in a cool, dry place; keep container tightly sealed after use
• Keep out of reach of children; Made in France