Injectable Thiamine (vitamin B1) supplement. Thiamine plays an important role in the metabolism of carbohydrates, proteins and amino acids, and in energy production for all cells. Thiamine is water soluble so rapidly absorbed and excreted from the body, requiring regular supplementation, particularly in hard working animals where dietary intake may not be sufficient. High doses area also reported to help calm nervous or over-excitable horses. This product can be safely used with all Nature Vet products.