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L-lysine Powder For Cats

L-lysine Powder For Cats


L-lysine Cat Powder provides the amino acids essential for antibody production to promote normal immune system response and help fight infection. 60 Day Supply.
Orders placed before 12pm EST ship same day with free shipping.

Product information

Support your cat’s immune system and respiratory health. This easy-to-use powder supplement contains a generous amount of L-lysine, an amino acid essential for the production of antibodies needed for normal immune system response. Beneficial in helping to manage upper respiratory issues such as conjunctivitis, and other symptoms of feline herpes, our veterinarian-formulated Cat L-lysine Powder is manufactured in Vermont, free of corn, artificial flavors and dyes, and has a great chicken liver taste your kitty will love!


Guaranteed Analysis per 2 scoop (1.20 g) serving:
Crude Protein (min) 60.00%
L-lysine 500 mg
Crude Fat (min) 2.00%
Crude Fiber (min) <0.20%
Moisture (max) 2.10%
Ash (max) 3.49%
Calorie Content:

3695 kcal/kg; 4.43 kcal/1.2 grams

Inactive Ingredients:

Brewers yeast, chicken liver, l-lysine, mixed tocopherols


Two scoops per day, mix with food. 

Shipping and return details

Free Shipping (arrives in 5-8 business days)
All orders are eligible for free shipping! Please note that we only ship to addresses in the lower 48 of United States. We do not ship internationally or to AK/HI at this time.

Expedited Shipping (arrives in 2-3 business days)
Flat rate of $19.99 USD. Orders placed before 3pm EST Monday - Friday (non holidays) ship the same day. In-stock items are normally shipped within 1-2 business days. Expedited and overnight shipping options are not available to Hawaii, Alaska and PO Boxes. We do not ship on holidays.

Hastle-free Returns
We are happy to accept returns of unopened, unexpired products purchased directly from our website within 30 days of purchase. Please note, we DO NOT accept returns of opened or expired products. We also do not accept returns of items purchased from Amazon or other retailers.

Please send your returns using the carrier of your choice to:

Under the Weather Pet (ATTN: Returns)
1360 Marshall Avenue Williston, VT 05495

Please ensure to include your name and order number.

Once your return has been processed, it may take 3 - 10 days for the refund to be posted to your account.
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  • Veterinarian Formulated

    Every product we manufacture has been developed in close collaboration with verterinarians - that means they’re safe, and they work!

  • Manufactured in the USA

    All of our products are manufactured right here in Vermont, USA, always using the highest quality ingredients.

  • Fast and Free Shipping

    Your hands are already full taking care of your furry friend. Save the trips to the store with our fast and free shipping!


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