This non-heating oil for energy and mobility is high in fish Omega 3 & 6 essential oils (strictly speaking it is only suitable for carnivores as we do not often see horses fishing!) but it has been used for many years as an additive to equine feeds. Any oil helps lubricate the joints of veterans of any species and Cod Liver Oil also promotes a sleek coat and healthy skin as well as nutritional support for bones and hooves. Quality: Pegasus Health Cod Liver Oil is 100% pure and contains no heavy metals, it is important to find out if a cheaper version does. Feeding: 10 to 20ml (20ml is about 1 tablespoon) per 100kg bodyweight (16.2hh is about 500kg) best divided between 2 feeds daily. Feed the lower rate for general maintenance and the higher for pregnant or lactating mares, breeding stallions, young stock and very hard working animals (eg. racehorses & highly competitive animals) 1Lt will last a general maintenance 500kg horse about 20 days and a high category 500kg horse about 10 days.