Support for general health and digestion Our Brewers’ Yeast contains 100% pure brewers’ yeast, a traditional equine supplement for general health and digestion support. For premium support, we recommend GastriAid for evidence-led total gut health. Clean Sport: Brewers’ Yeast is audited under the BETA NOPS Scheme as suitable for FEI competition. Check local authorities if racing or competing internationally. Please Note: This product is only available in the UK