Rumbul cattle bolus contains an alloy of magnesium, copper and aluminium.


Gives effective prevention of grass staggers in dairy cows and suckler calves giving a guarenteed supply of magnesium when it is needed most.

Can be used pre-calving to help boost magnesium intake


Must be administered at least 2-3 days before the onset of the period of risk (e.g. day of turn out). Rumbul bullets take a day or two before starting to release magnesium.


The active life of Rumbul cattle is 28 days


Active Ingredient:  Magnesium


Withdrawal: Meat Nil.  Milk Nil.


Pack Size - 10

Agrimin Rumbul Cattle Bolus

  • Dosage

    2 bullets per head

    Adminstered 2-3 days before the onset of the period of risk

  • Legal Catagory


  • "IMPORTANT - Animal Medicines"

    When purchasing animal medicines such as wormers, that are classified as POM-VPS  (prescription only medicine), it is a legal requirement that you to complete a short form, prior to dispatch, to enable us to correctly prescribe your product.  Failure to fully complete the form may result in a delay of your goods being dispatched.

    One of our Animal Health specialists will contact you if there are any queries. 
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Registered Address   90 The Broadway, Chesham, Buckinghamshire. HP5 1EG