Fevertreat O bolus

Contains two types of calcium release mechanism, fast and medium release, specifically formulated for fresh cows.

Calving increases the risk of hypocalcemia and milk fever. Old-school methods to overcome these challenges were supplementing calcium by injection or orally. Liquid calcium consumption may cause damage to the upper respiratory tract. Calcium injection on the other hand, maintains blood calcium levels merely for short period.

The most proper way to answer these problems is a rapid constant supply of calcium in the blood, which a calcium bolus would provide.




  • Wax coating (release cover) that prevents release of calcium in the mouth and the consequent damages to the upper respiratory system


  • Rapid and continuous release of calcium only in the rumen environment that maintains calcium blood level for 24 to 48 hours


  • Two boluses with a diameter of 2.5 cm and length of 10 cm contain 62 grams pure calcium, which gradually provides calcium


  • Consumption of the bolus maintains the proper level of blood calcium for 24 hours.




The amount of pure calcium in each bolus
Fast-releasing calcium 9/8 g
Medium-release calcium 21/6 g
Total pure calcium 31/4 g










Consumption of bolus for dairy cows without record of Milk fever

With the first sign of calving, feed a bolus in order to maintain the blood calcium level for 12 to 24 hours.

Consumption of bolus for high-risk dairy cows or with a record of milk fever

With the first signs of calving feed the first bolus.

Feed the second bolus 12 to 24 hours after the first bolus. In this case, the proper level of calcium is maintained for 48 hours.

Consumption of bolus for cows with milk fever

After solving the problem of recumbence by injecting calcium supplement under the supervision of the herd veterinarian and getting assured at the normalization of swallowing conditions, a bolus should be fed to the cow and if the herd veterinarian suggests, the second bolus should be fed 12 to 24 hours later.





  • Store in a cool and dry place with temperature less than 25 ° C.
  • Do not use a bolus when milk fever is diagnosed. With milk fever and possible swallowing difficulties, bolus application may lead to animal suffocation.
  • Use a bolus-eating instrument to feed the bolus.