Bovine somatotropin, or bST, is a natural protein produced in the pituitary glands of all cattle and it helps adult cows produce milk. Milk from cows receiving supplemental bST is unchanged and just as wholesome and nutritious as always - full of calcium, protein, phosphorus and vitamins. In fact, the level of bST in milk remains the same.

Because POSILAC benefits large and small herds alike, it can play a critical role in helping farmers with limited resources here and around the world. The use of supplemental bST allows dairy farmers to produce same amount of milk with fewer resources, thereby providing dairy farmers with additional economic security as well as providing related environmental benefits. We encourage you to explore this web site to learn more about POSILAC.

Supplement lactating dairy cows every 14 days beginning at 57-70 days in milk until end of lactation.  When considering the link between feed efficiency and environmental sustainability, manufacturing process and total environmental costs must be considered.  The label contains full use information including cautions and warnings.  Always read, understand, and follow the label and use directions.