Delivers 500mg of pure L-Lysine per drop for clear eyes, a strong immune system, and a total viral support. With a 97% acceptance rate. No treats, no pills, no drama. (60 ml / 2 fl oz)
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Up to 90% of cats carry feline herpesvirus (FHV-1) — and once they have it, they have it for life. It hides in the nervous system, waiting. Then stress hits. A vet visit. A cold snap. A change in routine. And suddenly your sweet cat is sneezing, eyes are goopy, and they’re struggling to breathe clearly again.
You’ve probably tried lysine before — the treats, the gels, the powders. But here’s what nobody told you: most lysine products fail before they even reach your cat’s system. Chalky treats get refused. Gels get spit out. Powders get sniffed and walked away from.
No consistency = no immune support = another flare-up.
That’s why VitalCats L-Lysine+ Liquid Drops exist — to finally close the gap between trying to help and actually helping.
🛡️ Support Immune Defense During Flare-Ups — L-Lysine helps inhibit viral replication, giving your cat’s immune system the backup it needs when stress tries to reactivate the virus.
👁️ Protect Eyes From Viral Damage — Supports the delicate eye tissue that FHV-1 attacks, helping reduce the watery, crusty, goopy eyes that break your heart.
🤧 Ease Respiratory Comfort — Helps calm the sneezing fits, nasal congestion, and labored breathing that make flare-ups so miserable to watch.
😌 Break the Stress-Flare Cycle — When immune support is consistent (not hit-or-miss), your cat’s system stays stronger, even when life gets stressful.
✅ Pharmaceutical-grade L-Lysine — purity verified by third-party lab testing
✅ Tasteless liquid formula — disappears into wet food, raw, or even water
✅ No fillers, no junk, no sugar — clean support that won’t upset sensitive stomachs
✅ A form picky cats actually take — no more wasted money on refused treats
✅ Precision dropper included — so you always know exactly how much to give
"I recommend VitalCats L-Lysine+ to every cat owner whose pet suffers from sneezing or watery eyes. Feline herpes affects up to 90% of cats, a fact many owners don’t realize. The pure, unadulterated formula of VitalCats gives me the confidence that I’m not sending clients home with a product full of fillers or contaminants. It’s a foundational supplement for feline immune health."
"After 12 years in veterinary practice, I’ve seen countless cases where subtle signs of lysine deficiency like sneezing or goopy eyes are mistaken for normal aging. VitalCats is the only lysine supplement I’ve found that consistently delivers on its promise of purity and efficacy. I trust it for my patients and have seen remarkable turnarounds in their energy and overall vitality. It’s an essential part of my preventative care protocol."
"I started using VitalCats L-Lysine+ with my own senior cat after a herpes virus diagnosis. The purity of the supplement, the precise dosing, and how easily the tasteless liquid mixes into his food made it a clear choice. Now, I recommend it to any client whose cat is on a processed food diet, which is nearly all of them. It’s a simple, effective way to bridge the nutritional gap left by modern cat food manufacturing."
Results You'll Actually See
Use the included dropper to measure 1ml of pure liquid lysine. One squeeze = one serving = one day's worth of immune, eyes, and airway support.
Squeeze the drops over your cat's wet food, raw food, or mix into a homemade meals. It dissolves instantly and is completely tasteless—your cat won't notice a thing.
Feed as usual. Within 3-4 weeks, you'll see much less sneezing, a shinier coat, and clearer eyes. Consistency is key for long-term immune and visual health.
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 90 days for a full refund.
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Yes! VitalCats L-Lysine+ is 100% pure pharmaceutical-grade L-Lysine with no fillers, additives, or artificial ingredients. It's safe for cats of all ages, breeds, and sizes. L-Lysine is an essential amino acid that cats need daily, and any excess is safely excreted through urine. However, if your cat has a pre-existing medical condition or is on medication, we recommend consulting your veterinarian before starting any new supplement.
Most cat owners notice improvements within 3-4 weeks of consistent daily use. You may see increased energy and alertness in the first 1-2 weeks as immune levels begin to normalize. By week 3-4, visible changes like a shinier coat, brighter eyes, and more playful behavior become apparent. For long-term benefits like heart and vision protection, continued daily use is recommended.
Simply mix one dropper (1ml) into your cat's wet food, raw food, or homemade meals once per day. VitalCats is completely tasteless and odorless, so most cats don't even notice it. It dissolves instantly and works best when mixed with moisture-rich foods. If your cat is picky, start with half a dropper and gradually increase to the full dose over a few days.
VitalCats L-Lysine+ is 100% tasteless and odorless, so 99% of cats don't notice it when mixed into their food. If your cat is extremely picky, try mixing it thoroughly into wet food or adding a small amount of tuna juice to mask any texture. We also offer a 60-day money-back guarantee—if your cat refuses it or you don't see results, we'll refund you in full.
L-Lysine is a naturally occurring amino acid and is generally safe to use alongside most medications. However, if your cat is on prescription medication (especially for viral conditions), we recommend consulting your veterinarian before starting VitalCats L-Lysine+. Many vets actually recommend lysine supplementation as part of a comprehensive immune health plan.
In the first 1-2 weeks, you may notice subtle improvements in your cat's energy levels and alertness as their body begins building immune defenses. Some cats become slightly more active or show increased interest in play. By week 3-4, the changes become more visible: shinier coat, brighter eyes, and noticeably more energy. Long-term benefits (immune health, viral protection) build over time with consistent use.
Orders are processed within 1-2 business days and typically arrive within 3-5 business days via standard shipping (USA). We also offer expedited shipping options at checkout. You'll receive a tracking number via email as soon as your order ships. International shipping is available and takes 7-14 business days depending on location.
VitalCats L-Lysine+ is designed for long-term daily use. L-Lysine is an essential amino acid that cats need every day, and most commercial cat foods don't provide enough (especially after cooking). We recommend making VitalCats part of your cat's daily routine for ongoing immune health, eye support, and overall vitality. Many cat owners use it for years to maintain optimal health.
L-Lysine is safe and beneficial for most cats, including those with health issues. In fact, lysine deficiency is linked to viral flare-ups (feline herpes), eye problems, and weakened immunity. If your cat has been diagnosed with a heart condition, vision decline, or low energy, lysine supplementation may help. However, we always recommend consulting your veterinarian before starting any new supplement, especially if your cat has a serious medical condition or is on medication.
Yes! We offer flexible payment options through Shop Pay and Afterpay at checkout. You can split your purchase into 4 interest-free payments, making it easier to invest in your cat's health without the upfront cost. Simply select your preferred payment method during checkout.
We stand behind VitalCats L-Lysine+ with a 60-day money-back guarantee. If you don't see noticeable improvements in your cat's energy, coat quality, or overall health within 60 days, or if your cat refuses to eat it, simply contact us for a full refund—no questions asked. We want you and your cat to be completely satisfied.
