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Each bolus also has an acidifying effect, much like a DCAD diet has, which helps the cow to mobilise her own calcium reserves. The bolus dissolves in the rumen within 30 minutes and helps to raise blood calcium levels over a prolonged period of time. 

Bovikalc®  is to be used in dairy cows at risk of developing milk fever, especially in high yielding, older dairy cows and those individuals at increased risk. Convenient with proven efficacy, that's the beauty of Bovikalc®. For reduction of the risk of milk fever:

  • 1st bolus at the first sign of parturition
  • 2nd bolus immediately after calving


Note: If necessary, give 1 or 2 additional boluses at 12–15-hour intervals


For supplementation following calcium injection:

  • 1st bolus 2–3 hours after calcium injection
  • 2nd bolus 12–15 hours later


Provided that cows can raise their head and are starting to eat and drink. Bovikalc® must not be given to cows with clinical signs of milk fever as the swallowing reflex may be impaired. Do not give the bolus to a down cow (paresis). Only administer using the Bovikalc® branded applicator. It is recommended that a veterinary surgeon or nutritional expert’s advice is sought before use.

  •  1. McArtand Oetzel. J Dairy Sci. 2015;98:7408.