Our mastitis bolus Mammitop Small is a slow-release sheep supplement that is developed to prevent the development of clinical mastitis after lambing or in situations with increasing cell count. It has a slow release of 21 days. A trial was conducted at the University of Leon in Spain. 52 sheep received a Mammitop Small bolus and 53 sheep were in the control group. The trial looked at the evolution of milk production, cheese production, somatic cell count, and urea in milk.