Alfalfa is a very nutritious fibre-source that has several positive characteristics against gastric ulcers. At first, the structure promotes chewing. While chewing horses produce saliva which has a neutralizing effect on stomach acid. Additionally, research has shown that the high level of calcium and protein, and the cell structure of alfalfa, provide a buffering effect on stomach acid. So, alfalfa is not bad for the stomach, it even supports a healthy stomach.