A proven probiotic for digestive support

15 reviews. 5 / 5

92 Days Supply (1.00kg) - €30.99

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Yea-Sacc®

A proven probiotic for digestive support

This scientifically proven live yeast culture stabilises the digestive system and optimises the digestion of fibre and protein. Yea-Sacc® is a good value option for basic digestive support, and is ideal for older horses, those on high fibre diets and those going through management changes.

For the highest level of support for the entire gastrointestinal tract, see Ultimate Ease®.

15 reviews. 5 / 5

Reviews
Technical
FAQ's

Susan - 31/08/2026 20:11

Nearly at the end of my 1st bag of yea-sacc.
My 27yr old mare was getting a lot of colic so decided to try this to help her digestion.
Fingers crossed that so far all has been really good since she’s been having this added to her food.
Have just purchased my 2nd bag to carry on with.
Really happy with product & outcome.
Thank you feedmark.

Rachel - 25/06/2026 10:48

My mare can be picky but ate this with no issues.

Stephanie - 11/03/2026 19:14

Great product for helping my young horses gut settle after he was importsnt from France to the UK.

Felicity - 06/03/2026 07:59

Excellent quality product.
Superb service from Feedmark.

Carol - 20/10/2025 19:35

Excellent product for horses hing gut I use this for a horse who had a history of ulcers and would recommend it

Helen - 02/10/2025 19:34

Great product

Guest - 17/04/2025 17:33

Excellent service and product. Found it on Google whilst searching for products for my horse

Rachel - 25/03/2025 11:17

Great in times of stress or season change. Hard to buy on its own these days.

Jemma - 01/10/2024 20:57

Service is excellent, product came down really quickly & you get a lot for your money, it lasts ages.

Laura - 28/08/2024 11:44

Feeding to my cushings pony who has bad teeth and can no longer eat hay to help with digestion

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Feeding Guide

Weight of Horse/Pony	Amount per day
Up to 400kg	1 ½ scoops
Over 400kg	3 scoops

1 level (5ml) scoop of Yea-Sacc® weighs approximately 4g

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

Yea-Sacc® is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes competition rules.

Nutrition Information

A probiotic live yeast culture for use in horses. Yea-Sacc® has undergone substantial research to confirm its effectiveness. Probiotics supply the horse’s hindgut with an additional supply of beneficial microbes that are essential for efficient fermentation of fibre, and feeding YeaSacc® has been shown to improve digestion of fibre in the diet, enabling the horse to get the most out of their forage.

Composition

Yea-Sacc® live yeast (Saccharomyces cerevisiae CBS 493.94)

Additives

ZOOTECHNICAL ADDITIVES (per kg): Yea-Sacc® live yeast (4a1704 Saccharomyces cerevisiae CBS 493.94) 250,000,000,000cfu.

Analytical

Crude protein 22.2%, Crude oils & fats 2.9%, Crude fibre 5.3%, Crude ash 5.0%, Sodium 0.2%

What is Yea-Sacc®?

Yea-Sacc® is a live yeast derived from the Saccharomyces cerevisiae strain of yeast. It is the only strain of live yeast that is licensed for use in horses.

How does Yea-Sacc® work?

Yea-Sacc® improves the environment in the hindgut by using up oxygen to create a more favourable enviornment for the hindgut microbes. This enhances the activity of the fibre digesting bacteria.

When would I feed Yea-Sacc instead of BioPro®

Yea-Sacc® is a probiotic, a live culture which adds to the 'good' bacteria in the hindgut. It is suitable for all horses, but for those with specific digestive issues it is advisable to feed BioPro® which is a prebiotic and probiotic supplement. Yea-Sacc® is a good value option for horses that require hindgut support.