Norbrook Calcitrace D3 Bolus

The first and only long acting cattle bolus to offer high levels of calcium together with trace elements, magnesium, phosphate and vitamin D3, which are essential around calving time. It offers the highest level calcium release during the milk fever high risk period of 12-24 hours after calving and has a sustained calcium release for up to 48 hours, outweighing other calcium only bolus products which can only claim 18 hours. Avoid the race against time and reduce the risk of milk fever in dairy herds at calving.