Comin-cholin B-complex-Horse is an excellent means to guarantee a balanced digestion. Product Info Comin-cholin B-complex-Horse is an excellent means to guarantee a balanced digestion. It contains a very high dose of vitamin B12, that is necessary for a good absorption of iron. It also contains methionine and choline which are known for their beneficial effect on digestion. The composition as a whole also has a good influence on the coat. Learn More