--- product_id: 267367101 title: "Pet Health, L-Lysine Supplement, Powder, Formulated for Cats, NASC Certified, 8-Ounce" brand: "now" price: "€ 45.35" currency: EUR in_stock: true reviews_count: 13 category: "Now" url: https://www.desertcart.hr/products/267367101-pet-health-l-lysine-supplement-powder-formulated-for-cats-nasc store_origin: HR region: Croatia --- # Vet-recommended formula NASC certified quality Immune system booster Pet Health, L-Lysine Supplement, Powder, Formulated for Cats, NASC Certified, 8-Ounce **Brand:** now **Price:** € 45.35 **Availability:** ✅ In Stock ## Summary > 🐾 Elevate your cat’s health game with vet-trusted, NASC-certified L-Lysine! ## Quick Answers - **What is this?** Pet Health, L-Lysine Supplement, Powder, Formulated for Cats, NASC Certified, 8-Ounce by now - **How much does it cost?** € 45.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/267367101-pet-health-l-lysine-supplement-powder-formulated-for-cats-nasc) ## Best For - now enthusiasts ## Why This Product - Trusted now brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure & Potent Powder:** Unflavored, easy-to-administer powder perfect for picky eaters and multi-cat homes. - • **Vet-Approved Wellness:** Endorsed by Dr. Barbara Royal, ensuring trusted care for your feline friend. - • **Family-Owned Excellence:** Crafted in the USA by a trusted family business since 1968, blending tradition with innovation. - • **NASC Certified Integrity:** Backed by the National Animal Supplement Council for guaranteed quality and safety. - • **Immune Defense Powerhouse:** Supports your cat’s natural defenses for year-round vitality. ## Overview NOW Pet Health L-Lysine Powder is a premium, NASC-certified supplement formulated specifically for cats to support immune, respiratory, and ocular health. Recommended by veterinarian Dr. Barbara Royal, this unflavored powder is easy to administer and ideal for cats 6 months and older, making it a top choice for proactive pet parents seeking trusted, high-quality care. ## Description Veterinarian Recommended NOW® Pets L-Lysine Powder helps support a healthy immune system, normal respiratory health, and also helps to maintain ocular health. NOW® Pets L-Lysine Powder is recommended by renowned veterinarian Dr. Barbara Royal, DVM, CVA, founder of the Royal Treatment Veterinary Center. For use in Cats only. Perfect for multi-cat households and boarding. Review: Good product - Easy to administer in pet food Review: ممتاز - ممتاز ويقوي مناعة القطط خاصة للزكام المتكرر ## Features - IMMUNE SYSTEM SUPPORT FOR CATS: NOW Pets L-Lysine Powder helps support a healthy immune system, normal respiratory health, and also helps to maintain ocular health - VETERINARIAN RECOMMENDED: NOW Pets L-Lysine Powder is recommended by renowned veterinarian Dr. Barbara Royal, DVM, CVA, founder of the Royal Treatment Veterinary Center - NASC CERTIFIED: NOW Pets has been certified by the National Animal Supplement Council (NASC), an organization that protects and enhances the integrity of the animal health product industry by promoting the well-being of non-human food chain animals that are given animal health supplements by their - NOW Pets premium pet supplements are formulated and manufactured with the same attention to quality and detail NOW puts into their supplements intended for humans, from the sourcing of top-quality ingredients to finished product testing - Packaged in the USA by a family owned and operated company since 1968 - Give to your cat during or after mealtime. For cats 6 months or older 1/8 teaspoon twice daily and kittens under 6 months give 1/16 teaspoon twice daily. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B016WG7UF8 | | Active Ingredients | L-Lysine Hydrochloride - 276 mg | | Best Sellers Rank | #4,528 in Pet Supplies ( See Top 100 in Pet Supplies ) #131 in Cat Health Supplies | | Brand | NOW | | Brand Name | NOW | | Customer Reviews | 4.5 out of 5 stars 3,478 Reviews | | Flavor | Unflavored | | Flavour | Unflavored | | Global Trade Identification Number | 00733739044501 | | Item Form | Powder | | Item Type Name | Herbal/Mineral Supplements | | Item Weight | 0.64 Pounds | | Item form | Powder | | Item weight | 0.64 Pounds | | Manufacturer | NOW Sports - Nutrition and Wellness | | Manufacturer Part Number | 4450 | | Model Number | 4450 | | Number of Items | 1 | | Product Benefits | Healthy Immune System | | Product benefits | Healthy Immune System | | Specific Uses For Product | Heart | | Target Species | Cat | | UPC | 733739044501 | | Unit Count | 8 Ounce | | Volume | 0.62 Milliliters | ## Product Details - **Active Ingredients:** L-Lysine Hydrochloride - 276 mg - **Brand:** NOW - **Flavour:** Unflavored - **Item form:** Powder - **Item weight:** 0.64 Pounds ## Images ![Pet Health, L-Lysine Supplement, Powder, Formulated for Cats, NASC Certified, 8-Ounce - Image 1](https://m.media-amazon.com/images/I/71XDv3QInAL.jpg) ## Questions & Answers **Q: Amazon needs to show the label's ingredients so is it pure L-Lysine no fillers or additives? Thank you.** A: No fillers or additives, so it is pure L-Lysine. And to be honest when I bought the flavored powder L-Lysine made specifically for cats (different brand)- I was able to see a white powder in jar and a few streaks of tan powder- it didn't stay mixed well and the tan powder was the added flavoring. This product is white granules. I mix it in with canned food- the added flavorings I was paying A LOT extra for was never needed and I was so glad when I switched to buying from Now brands, definitely a money saver. **Q: Why does directions say twice weekly? I thought twice daily.** A: Directions say--cats 6 months and older-1/8 teaspoon twice weekly. Kittens 6 months and younger -1/16 teaspoon twice weekly.. My cat was not eating for three days and would hide under the bed. After two days of this stuff he started to come around. Now hes back to his old self. I gave him a pinch twicw a day the first week because he was so bad, now im going with the directions. Good luck,,,cap **Q: How to the feed ration?** A: I just mix it in with the cat's food.These are the manufacturer directions:* For cats 6 months or older 1/8 teaspoon twice daily* For kittens under 6 months 1/16 teaspoon twice daily **Q: Why does this product have a california proposition 65 warning?** A: California does not include pet products in Prop 65. NOW does not add this warning, but some resellers add a warning for all products sold to California businesses or residents to assure compliance with that unique law in case manufacturers aren’t testing heavy metals; NOW does this testing. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by N***M on 17 February 2023* Easy to administer in pet food ### ⭐⭐⭐⭐⭐ ممتاز *by E***L on 20 September 2025* ممتاز ويقوي مناعة القطط خاصة للزكام المتكرر ### ⭐⭐⭐⭐ Good *by M***Z on 12 December 2025* Good Product ## Frequently Bought Together - NOW Foods Pet Health, L-Lysine Supplement, Powder, Formulated for Cats, NASC Certified, 8-Ounce - Purina Pro Plan Veterinary Supplements FortiFlora Cat Probiotic Supplement for Cats with Diarrhea - 30 ct. Box - Nutramax Laboratories Cosequin Joint Health Supplement for Cats - With Glucosamine and Chondroitin, 80 Capsules --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/267367101-pet-health-l-lysine-supplement-powder-formulated-for-cats-nasc](https://www.desertcart.hr/products/267367101-pet-health-l-lysine-supplement-powder-formulated-for-cats-nasc) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-11-04*