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Pure Lysine

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Feeding Chart

Daily Serving

Feeding Chart
Dog Weight - lbs Inactive Dog Active Dog Working Dog
Inactive Dog - Less than 30 minutes of vigorous exercise daily
Active Dog - At least 30 minutes of vigorous exercise daily
Working Dog - More than two hours of vigorous exercise daily
This is only a guide. Please consult your veterinarian to determine the perfect feeding amount for your dog.
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Only SmartPaks on AutoShip make you eligible to apply for the FREE ColiCare Program. Colicare is a free program that provides up to $15,000 in colic surgery reimbursement
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Product Overview

Economical form of lysine

Lysine is the protein component most often lacking in horses' diets. Pure Lysine provides a pure and economical form of this nutrient.

Learn More about Pure Lysine

  • 9,099 mg of pure lysine
  • Lysine must be provided in your horse's diet because the body cannot make it on its own

Learn More

Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

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    We take the guesswork out of serving sizes, ensuring your horse gets the right amount, every time. SmartPaks have airtight seals to ensure that your horse always has the freshest supplements available. Your horse is unique and his supplements should be too. Choose from over 230 supplements to get everything he needs, nothing he doesn't. We print your horse's name on every Pak so there are no mix-ups, making feeding time fast, accurate and easy! Unlike most buckets, SmartPaks are made from recycled plastic and can be recycled again! We'll send your SmartPaks on time so you never run out, with total flexibility and no commitment. Plus all SmartPaks over $40 receive free ground shipping.


The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Pure Lysine is rated 4.6 out of 5 by 110.
Rated 5 out of 5 by from 21 Year old TB looks great! My 21 year old TB gelding does fantastic on this! The older he gets, the harder it is to keep him looking good. He is retired from showing now and doesn't work as much as he used to be he really does look good! He's been on this for a year and I don't want to take him off. I wish I took before and after pictures but anyone who is familiar with TB's knows they can be hard to keep weight and muscle on!
Date published: 2023-06-07
Rated 5 out of 5 by from Topline ✅ I bought lysine for topline support and muscle recovery. I have a very sensitive mare with some sore muscles who also happens to have no topline (rescue). One month of this supplement I’m sure isn’t enough to get results. Yet I’ve been very happy with it :).
Date published: 2021-04-27
Rated 4 out of 5 by from One horse ate, one horse hated Bought to supplement lysine levels in another supplement. One horse ate it just fine, the other refused to eat the grain it was in.
Date published: 2020-10-26
Rated 4 out of 5 by from Hoping to see improved muscle It will take a while I'm sure, but i'm hoping the Lysine will increase muscle and support the immune system on my 30 year old gelding. Hope to report back with good news.
Date published: 2018-12-13
Rated 5 out of 5 by from A needed supplement for all my herd [This review was collected as part of a promotion.] I keep my entire herd on lysine, they have orchard grass with a little bit of alfalfa, but it does not provide enough protein. This is a daily supplement for all.
Date published: 2018-09-23
Rated 5 out of 5 by from Great Price! [This review was collected as part of a promotion.] Great price for pure lysine! The horses have eaten it with no issues from day one. I love it supports the immune system and I feel like all my horses have better muscle tone since starting it 3 months ago.
Date published: 2018-08-01
Rated 5 out of 5 by from Steady muscle increase I bought this about a month ago. I have a young Friesian Cross who was really tight and had a problem with muscle development. Since starting this supplement he has been less sore and I've seen improvement in his top line development.
Date published: 2018-02-22
Rated 5 out of 5 by from Visual difference in weeks! My thoroughbred really needed the extra help that this supplement provided to build the muscle in her hind and topline. She hated the taste, but she is a very picky horse in general (hates apples and peppermints, etc.). All I had to do was add a little water into her grain and other smartpak supplements so that it stuck to her grain. The product itself made a huge difference within two weeks. Her hind end is rounder and her topline has filled out more. This, along with an appropriate amount of hay, grain, and consistent work has made her very muscly. Love it!
Date published: 2017-08-31
Rated 4 out of 5 by from Mini horses I use this product on my 2 mini horses to help with shedding and coat luster.
Date published: 2017-07-21
Rated 5 out of 5 by from Pure Lysine My horse has been on this product for the past 8 months because he had scratched his eye and also had a small eyelid bump or blemish of unknown origin. I chose not to do a biopsy so close to his eye, and have been trying this product to see if it made any difference. The blemish is reduced to half its size and the scratch has not scarred or left any residual damage to his eye. I am very pleased with this supplement for eye health and will continue using it. One small scoop on his grain daily and it is very affordable as well!
Date published: 2017-07-20
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