Young calves do not have a functioning rumen until approximately 12 weeks of age. Revive Neo Formula provides a specific blend of natural and beneficial bacteria for this stage of development. It contains a blend of over 6 billion beneficial probiotic bacteria, along with enzymes and a specific type of concentrated yeast. Revive Neo Formula is designed to establish and maintain a healthy gut microflora, ensuring a vigorous line of defence, and ultimately stronger, better doing animals. After all, you just can't beat a strong start in life!