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Brewer's Yeast

A natural supply of B vitamins and amino acids

18 reviews. 4.9 / 5
Trusted Feefo Customer - 01/12/2021 19:14
Quite pricey,  compared to other resellers. So only buy when on special offer.
Trusted Feefo Customer - 28/11/2021 19:18
Good quality product for our horses.
Jacquie - 28/02/2021 11:23
Palatable for the horse!!
Trusted Feefo Customer - 13/08/2020 10:40
I have used this product for a number of years for a mare that had several minor colics and has since had none. Also appears to be effective for my ex racer that more than likely would have suffered ulcers in the past.
robert - 13/08/2020 07:17
great product  that my animal loves
Trusted Feefo Customer - 26/06/2020 12:50
I bought this for my ducklings. It's exactly what I needed to help their growth and to prevent angel wing
Kim - 13/06/2020 20:01
Cheaper than other brewers yeast and this is the one my two gastric prone mares prefer. Helps with symptoms of hind gut problems particularly when spring grass has come through
Sarah - 13/05/2020 21:23
Fantastic product, fantastic service & delivery
Madeline - 18/12/2019 22:52
I've been using Feedmark products for years now and I keep coming back - great quality and value.
MARIA - 02/12/2019 07:55
Barbara - 30/10/2019 12:56
Good quality and price, I also like the option to buy without a plastic tub
MARIA - 23/10/2019 13:24
Suits both my 39 year old cob, my 11 year old miniature and my 5 year old New forest x cob.
Catherine - 10/07/2019 11:40
Good value. Ideal as a natural addition to a diet
Trusted Feefo Customer - 05/06/2019 12:39
Good quality product and sensibly packaged.
Denise - 22/05/2019 17:20
Good quality product horses love it
Trusted Feefo Customer - 27/03/2019 13:20
Great product for my Shetland pony who suffers from sweetitch.
- 15/08/2018 11:38
Excellent products - but this is a stupid survey that requires you to use a minimum of words, must be offputting for a lot of people
Trusted Feefo Customer - 20/02/2018 08:03
I have used this product for a number of years. It has been particularly effective for a mare who was experiencing intermittent mild colic but this has ceased since using brewers yeast.

Nutrition Information

Brewer’s Yeast provides a natural way to supplement your horse’s diet with B Vitamins and amino acids. The amino acid content and prebiotic action makes it an excellent supplement for poor-doers to assist with improving condition, in combination with exercise. Some compounds within Brewer’s Yeast may also support immune function. Commonly, Brewer’s Yeast is also fed to promote relaxation


Brewer's Yeast


Crude protein 40.2%, Crude oils & fats 1.5%, Crude fibre <0.1%, Crude ash 12.1%, Sodium <0.1%

Feeding Guide

Weight of Horse/Pony Amount per day                                
Up to 400kg ½ scoop
Over 400kg 1 scoop
1 level (50ml) scoop of Brewer's Yeast weighs approximately 38g

If you want to supplement your horse's diet with live yeast to aid digestion, feed the friendly bacteria and assist fibre utilisation, look for the EU licensed and scientifically proven Yea-Sacc® in BioPro.

Yea-Sacc® is also included in Original Balancer™ and the all-in-one Performance Range products.

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

Brewer's Yeast is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.