Bovikalc® is an oral calcium supplement for fresh cows. The product is administered to cows at calving and again 12 hours later. BOVIKALC provides them with the supplemental calcium they need when blood calcium levels are at their lowest. It provides 43 grams of calcium in two forms:Calcium chloride for rapid release; and Calcium sulfate for sustained release. I.V. calcium has its challenges and is a time-consuming way of providing calcium to fresh cows. It also does not provide sustained release. The BOVIKALC bolus formulation dissolves completely within 30 minutes after arriving in the rumen, and the unique coating is gentle on the throat.