For the prevention of facial eczema in cattle, 251 - 600kg.

A10744 Unrestricted

Active Constituents:
Zinc 116.2g in a 132g bolus. A smooth, shiny, cylindrical, intra-ruminal bolus with one flat and one convex end. Available in trays holding 24 boluses, packed in pairs of 2 x 132g boluses taped together by a paper wrapper that dissolves after administration, allowing the boluses to separate.

Prevention of facial eczema in cattle, between 251kg and 660kg bodyweight.

FIRST DOSE (6 week protection): Using the applicator administer boluses at the beginning of the facial eczema risk period when spore counts begin to rise (mid-January and February in most areas).


Bodyweight Number and Type of Bolus
251-330kg 3 x 132g boluses
331-440kg 4 x 132g boluses
441-550kg 5 x 132g boluses
551-660kg 6 x 132g boluses

Top-up Dosing:
Where there is a prolonged risk of facial eczema, a top up dose can be given after 6 weeks to provide at least 4 weeks' additional protection. The top-up dose is 2 x 132g boluses for all cattle between 251kg and 440kg, or 3 x 132g boluses for all cattle between 441kg and 660kg.
Thereafter, further treatment intervals should be based on faecal zinc concentrations, the level of the facial eczema risk, and veterinary advice.

General Dosing Instructions:
Up to 6 boluses can be administered in a single application. To ensure the safe administration of the boluses:

  1. Ideally, restrain the animal in a cattle crush. Avoid severe restraint, such as gripping the tongue, raising the nose too high or the use of nose clamps, as these interfere with swallowing.
  2. Place the boluses in the special applicator provided with the rounded ends facing outwards. 2, 3, or 4 boluses can be administered in a single application. Where 5 or 6 boluses are to be given, these should be administered in two applications, one involving the dosing of 3 (for a total dose of 5) or 4 boluses (for a total dose of 6) and the other involving the dosing of the remaining 2 boluses.
  3. Administer the boluses slowly and with care, making sure the animal's head and neck are extended and straightened so the applicator in the mouth lines up with the opening in the throat.
  4. The boluses held within the applicator should then be gently introduced into the side of the mouth and over the tongue. When positioned correctly, advance the applicator plunger with steady gentle pressure, once the animal begins to swallow. Only continue administering the boluses while the animal is swallowing. If the head and neck are at the wrong angle the animal will stop swallowing and administration must cease. Administration must only recommence when the head and neck have been repositioned correctly.

Regurgitation of the bolus can occur following administration, but experience has shown that the incidence of this is usually low. Unless damaged, regurgitated boluses can be re-administered. Watch the animal for a few moments following removal of the applicator.
Slight resistance may be felt during the early stages of the positioning of the applicator as the animal uses its tongue to try and prevent the bolus entering the back of the mouth. Always wait until the swallowing reflex is operating before administering the boluses. The swallowing reflex can also be used to assist in the correct positioning of the applicator in the mouth.

Withholding Times:
MILK and MEAT: Nil.

Face-Guard 251-660kg Safety Data Sheet