Farnam Weight Builder Weight Support Supplement for Horses, 22.5-lb, 90 Day Supply

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About This Item

Details

  • Nutritionally balanced, high-fat formula helps your horse maintain an optimal weight and body condition.
  • Provides easily digestible calories with no sugar added to safely add calories without the risk of digestive upset.
  • Promotes healthy skin and a glossy coat with omega-3 fatty acids from flaxseed meal and heat-stabilized rice bran.
  • Delivers controlled energy to help horses reach and maintain their performance demands.
  • Palatable, easy-to-feed powder mixes in easily with your horse’s regular grain ration.

Ingredient Information

Feeding Instructions

Support for Every Age and Every Stage

Whether you have a pregnant or nursing mare, a growing foal, or a horse that needs help maintaining weight, Farnam offers a selection of supplements to support their health and keep them strong and thriving at every stage of life.

Calories Without Risk of Digestive Upset

Weight Builder Weight Support supplement supplies extra calories for weight maintenance or performance. Formulated with 50% fat, it provides easily digested calories without the risk of digestive upset associated with feeding extra grain.

Keep Mares in Optimal Body Condition

Mare Plus Gestation & Lactation supplement is designed to help keep pregnant and lactating mares in optimal condition. Formulated with important nutrients, it supports mares and foals through fetal development and during lactation.

Give Foals the Nutrition They Need

Grow Colt Growth & Development supplement supports healthy growth and development in the first years of a foal's life. Formulated with 27 essential vitamins and minerals, it also supports immune health and bone and connective tissue development.

About Farnam

For over 75 years, Farnam has been a leader in equine care. Their mission is to continually strengthen the bond between horses and humans with simple, effective and innovative solutions that help make every moment of your life together better.

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Questions & Answers

8 Customer Questions

Is this safe for a horse with Cushings?

Answer by Chewy • Mar 23, 2021
The Weight Builder Equine Weight Supplement does not have any sugar added to the formula. We always recommend speaking to your veterinarian prior to changing your little one's routine. Your pet's vet is your best ally in managing any existing health conditions and sensitivities.

Can this be fed to a miniature horse? If so, what dosage?

Answer by Chewy • Jul 26, 2024
This supplement is ideal for performance horses, mature horses, underweight horses and seniors.

Will this also help with skin/coat condition?

Answer by Chewy • Mar 17, 2021
This powder supplement contains nutritious fats like omega 3’s to help your horse reach their ideal weight and promote healthy skin and a glossy coat.

How many calories does a serving contain?

Answer by Chewy • Jul 25, 2025
This supplement has a caloric content of 700 kcal/4 oz.
Reviews
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4.6
Rated 4.6 out of 5 stars
68 Ratings
Terms & Conditions

22 Customer Reviews

Rated 5 out of 5 stars
By Susan on Nov 29, 2025

Excellent supplement

I use it mainly to help my horse keep his weight on during the winter. This way I don't have to worry about overfeeding grain.

I use it mainly to help my horse keep his weight on during the winter. This way I don't have to worry about overfeeding grain.

Rated 5 out of 5 stars
By Ashley on Aug 25, 2025

Great product!

Used this product years ago on an older horse and it worked well. Trying it out on my 30 year old and have already noticed a difference in just a few days. Very

Used this product years ago on an older horse and it worked well. Trying it out on my 30 year old and have already noticed a difference in just a few days. Very impressed. Helps that he seems to love it.

Rated 5 out of 5 stars
By Shelley on Jul 31, 2025

Content spilled!

It was a big order and they tried to pack too much in one box so lids popped off and contents were spilled and wasted. But they sent another box right out so it

It was a big order and they tried to pack too much in one box so lids popped off and contents were spilled and wasted. But they sent another box right out so it turned out ok. Thanks!

Rated 5 out of 5 stars
By Mary on Nov 4, 2025

Gains weight

He’s putting on weight with this

He’s putting on weight with this

Rated 5 out of 5 stars
By Janette on Jul 24, 2025

Weight Builder

It works for picky eaters and hard keepers.

It works for picky eaters and hard keepers.

Rated 3 out of 5 stars
By Rhonda on Jan 21, 2025

Economical, but hasn’t helped my elderly gelding fill out

We’ve added this daily to our Senior gelding’s feed for 6 months, but he hasn’t filled out at all, He’s had a thorough check up from our vet, had his teeth floated,

We’ve added this daily to our Senior gelding’s feed for 6 months, but he hasn’t filled out at all, He’s had a thorough check up from our vet, had his teeth floated, & is regularly de-wormed. Probably will try another weight gain additive after this bucket is used up.

Rated 4 out of 5 stars
By Eric on Mar 4, 2025

Horse help

The horses love the taste and adds little bit more in the tank in the cold weather adding to weight staying on

The horses love the taste and adds little bit more in the tank in the cold weather adding to weight staying on

Rated 5 out of 5 stars
By Tonya on Jan 18, 2025

Great product for weight

I have a 29 year old mare who was very thin, started her on this 4 months ago she is doing amazing, highly recommend for senior horses.

I have a 29 year old mare who was very thin, started her on this 4 months ago she is doing amazing, highly recommend for senior horses.

Rated 1 out of 5 stars
By Katie on Dec 22, 2024

Received the item

The shipping packaging was horrible the container inside was opened and all the contents were inside and coming through the damaged areas of the box.

The shipping packaging was horrible the container inside was opened and all the contents were inside and coming through the damaged areas of the box.

Rated 5 out of 5 stars
By Dana on Nov 12, 2024

Weight gain

It’s been a couple weeks so far and my 29 year old gelding is putting on some weight already with this added into his diet. He likes the taste of it too and he is

It’s been a couple weeks so far and my 29 year old gelding is putting on some weight already with this added into his diet. He likes the taste of it too and he is normally picky