Top 9 Lysine Powder for Cats – L-Lysine Nutritional Supplements

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1. Alpha Paw


Alpha Paw Lysine for Cats, Human Grade All Natural Immune System Support, Helps Maintain Eye & Respiratory Health, Best L-lysine Powder Supplement, Made in The USA, 750mg Per Serving, 8oz

Alpha Paw #ad - Our powder is tasteless and odorless, so your cat won't even know it's there - Every Time. Money back guarantee - we strive to earn your complete satisfaction. Made in the usa - all of our cat health care products are carefully crafted in the USA in a GMP-complaint facility.

No added flavors. 100% pure lysine - 750 mg of human grade l-lysine per scoop ensures you are giving your cat almost twice as much per serving as the leading brand - See results faster with a superior supplement! A fresh approach - our human grade lysine is an essential amino acid for your cat's overall health. Skip the prescription medicine and try an all natural approach to healing.

That’s why we always offer a 30-day no-questions-asked money back guarantee. Treats feline herpesvirus symptoms - our l-lysine powder helps to treat symptoms such as sneezing, runny eyes, and upper respiratory infection associated with the herpes virus. We pride ourselves on offering you the best, without fail. We want you to be 100% satisfied with your purchase - every time.
BrandAlpha Paw #ad
ManufacturerAlpha Paw #ad
Weight0.5 Pounds

2. Now Foods


Amino Acid, Supports Collagen Synthesis*, 1-Pound, NOW Supplements, L-Lysine L-Lysine Hydrochloride Powder

Now Foods #ad - Healthy Immune Function*. Supports Collagen Synthesis*. Serving size: 1/4 level teaspoon / Contains 822 servings per container. Essential Amino Acid. Pure Powder.
BrandNow Foods #ad
ManufacturerNOW Foods #ad
Height4 Inches
Length6 Inches
Weight0.21 Pounds
Width5 Inches
Part Number0240

3. Best Naturals


100% Pure, Best Naturals Lysine Powder, 1 Pound

Best Naturals #ad - All best naturals products are manufactured in accordance with Good Manufacturing Practices GMP, among the highest standards in the world. Lysine is an essential building block for all protein which is particularly important to the proper growth and development of children. Supports production of collagen and tissue maintenance -- Important for balanced nutrition and health. Lysine plays an essential part in the production of carnitine, an amino acid which helps convert fatty acids into energy. Supports immune System --Supports Calcium Absorption.
BrandBest Naturals #ad
ManufacturerBest Naturals #ad
Weight1 Pounds
Part Number817716014579

4. Thomas Labs


Thomas Pet Felo Lysine, 12 Ounces, Powder, L-Lysine Supplement for Cats, Lysine for Cats

Thomas Labs #ad - Supports healthy eye function and respiratory health. Supports normal recovery in cats. Formulated to support a cat’s immune system and overall health. Promotes immune-enhancing effects. Promotes the production of antibodies and enzymes.
BrandThomas Labs #ad
ManufacturerThomas Labs #ad
Part Number110-3760-P02

5. NaturVet


NaturVet – L-Lysine Immune Support for Cats, 60 Soft Chews – Plus Antioxidants – Supports Immune System, Respiratory & Eye Health – 30 Day Supply

NaturVet #ad - Can be used daily for cats over the age of 12 weeks. L-lysine is an essential amino acid that supports a healthy respiratory system, immune system, and eye health functions. Wheat free, cgmp compliant, NASC, Manufactured in the USA. Specially formulated for cats that are responsive to L-Lysine. L-lysine immune support soft Chews help provide daily support for your cat’s immune system and overall eye health. Tasty soft chews that taste like a treat, packaged with a resealable cup to ensure freshness.
BrandNaturVet #ad
ManufacturerGarmon Corp. / NaturVet #ad

6. Nutricost


Non-GMO, Gluten Free, Nutricost L-Lysine Powder 1KG 2.2lbs, Pure L-Lysine

Nutricost #ad - Manufactured in a gmP Compliant, FDA Registered Facility. 1, 000 servings of pure, Premium L-Lysine Powder. 1 gram of l-lysine Powder Per Serving Scoop Included. Essential Amino Acid. Non-gmo, gluten free, 3rd Party Tested.
BrandNutricost #ad
ManufacturerNutricost #ad
Weight2.2 Pounds
Part NumberNC-LLYS-1KG

7. NutraBio


NutraBio L-Lysine Powder, 500 Grams

NutraBio #ad - Lysine helps maintain lean body mass, nitrogen balance, and supports recovery. This product is also certified kosher, is non-GMO, gluten free, hypoallergenic, and suitable for vegetarians.

No fillers or manufacturing excipients here. Collagen production - lysine is crucial for the formation of collagen, a major part of the body's connective tissues and may help the body absorb calcium. Essential amino acid - lysine is an essential amino acid, meaning it must be obtained through diet or with supplements. Without compromise – nutrabio’s l-lysine hcl provides 1000mg of pure lysine per serving.

Healthy immune system – lysine may reduce cold sores and other symptoms of herpes simplex according to some studies. Amino acid precursor - lysine acts as a precursor for several amino acids, including L-Citrulline needed for normal protein metabolism and L-carnitine needed for fat metabolism.
BrandNutraBio #ad
ManufacturerNutraBio Labs, Inc. #ad
Height1.57 Inches
Length3.15 Inches
Weight1.1 Pounds
Width2.36 Inches
Part Number23281



3.5oz, Maple-Flavored Lysine Gel for Cats and Kittens, Tomlyn Immune Support Daily L-Lysine Supplement

TOMLYN #ad - Cats love our tasty maple-flavored gel; easy to dose and administer, simply add to paws and/or nose. Helps manage common feline health issues; sneezing, squinting and watery, runny nose, inflamed eyes. One tsp daily provides the veterinarian-recommended amount of lysine for cats; half tsp for kittens. L-lysine supplement for cats; supports normal eye function, respiratory health, strong immune system. 50+ servings per tube; Lysine provides immune support for respiratory issues for as long as needed.
BrandTOMLYN #ad
ManufacturerVétoquinol USA OTC #ad
Height7.25 Inches
Length1.5 Inches
Weight0.35 Pounds
Width0.36 Inches
Part Number450522
Warranty100% Money Back Gaurantee

9. Nature's Life


Nature's Life L-lysine Powder 435 Mg, 200 Gram

Nature's Life #ad - Provides nutrition to support healthy immune system. Supports efficient utilization of low-lysine protein foods. Essential amino acid supplement. 100% natural and vegetarian. Manufactured as per GMP standards.
BrandNature's Life #ad
ManufacturerChiropractors Buying Group #ad
Height3.5 Inches
Length3.63 Inches
Weight0.56 Pounds
Width3.63 Inches
Part Number6069990