BetaCALM provides four active ingredients including Magnesium and Vitamin E to nutritionally support nervous and anxious horses. The specific levels of Magnesium, Vitamin E, Tryptophan and Thiamine may help to actively reduce the stress response during training, travelling and competition. Benefits of BetaCALM: Effective - Nutritionally supports horses exhibiting nervous behaviour due to dietary deficiencies. Balanced - Optimum levels of all key ingredients. Performance - Helps to calm your horse without affecting performance. Easy to use - Top dress your horse's feed.