Rumensin 20% Millmix

Rumensin™ (Monensin as monensin sodium)

Tried, Proven, Trusted
Rumensin Max

Rumensin™ (Monensin as monensin sodium)

Tried, Proven, Trusted
Rumensin Capsule

Rumensin™ Capsule (Monensin as monensin sodium)

100-day peace of mind

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Rumensin™ (Monensin as monensin sodium)
Rumensin™ Capsule (Monensin as monensin sodium)

Rumensin Capsule 100-day peace of mind

Advanced technology has led to a 100 day controlled release capsule suitable for situations where daily drenching, reliable water medication or in-feed premix feeding is not possible or desirable.

Suitable for beef and dairy cattle* with a live weight greater than 250kg, Rumensin™ Capsules have a special role as an aid in the control of bloat, in situations like those mentioned above.

*not recommended for Jersey heifers.

Important Safety Information

Always read, understand, and follow label directions.

Withholding Periods



Directions For Use

This product must not be used for growth promotion in cattle intended for human consumption.

For bloat control: Administer one capsule using the Rumensin™ Capsule Applicator. Wait seven days before introducing stock to bloat risk pasture.
CAUTION: Maintain herd observation during severe bloat conditions. As with any bloat treatment, herd observation is still required during bloat challenge periods. If additional protection is required, supplementary treatment may be administered. Cattle weighing in excess of 600kg liveweight may receive a lower than optimal Rumensin dose, and supplementary treatment with additional Rumensin product is strongly advised.

Rumensin Capsule payout data was obtained under a controlled environment where cattle were fed on ryegrass. Animal husbandry practices and bloat control methods should be adjusted when alternative feeding methods are employed.

For increased milk protein production: Administer one capsule using the Rumensin™ Capsule Applicator. Note that milk fat percentage may be reduced but there is no effect on total fat yield.

For control of ketosis: Administer one capsule using the Rumensin™ Capsule Applicator before the start of calving.


DO NOT USE in cattle weighing less than 250 kg.

DO NOT re-treat animals for at least 100 days.

DO NOT USE in Jersey heifers. Treatment with Rumensin™ Capsules has been associated with peritonitis following administration.

Directions for administration

Record the capsule and animal identification numbers before administration. Handle capsules with care. Take extra care when folding capsule wings in cold weather, as the wings may become brittle and can be damaged. Fold the wings down along the capsule body before inserting into the applicator. Place capsule fully in the head of the applicator, non-winged end first.

Restrain the animal using a crush or head bail. Standing to one side, restrain the animal with its head and neck stretched forward and firmly against your side. Grasp the animal with one hand in the corner of its mouth. Introduce the head of the applicator containing the capsule into the animal’s mouth, avoiding the front teeth. Do not use excessive force.

Once the applicator is inside the animal’s mouth, straighten it to avoid the molar teeth. Insert the applicator past the base of the tongue. As the animal swallows, the tongue will come forward and the applicator will move easily over the base of the tongue. Do not use excessive force. Withdraw the applicator slightly and repeat the procedure if resistance is encountered.

Be sure that the head of the applicator is past the base of the tongue. The correct applicator position will be indicated by the animal commencing to swallow. When this occurs, release the capsule from applicator by pressing the plunger. Remove the applicator from the animal’s mouth.

Hold treated cattle in a small paddock or yard for at least half an hour. If early regurgitation occurs, check the capsule number and re-apply to the appropriate animal. If the capsule is damaged, apply a new capsule. Check all animals for signs of capsule lodgement (e.g. coughing, drooling, off-feed and ill-thrift) three to four days after dosing. If lodgement is suspected, call your veterinarian immediately.

Approximately one percent of capsules may be regurgitated within the 100-day pay-period. If regurgitation occurs, administer a new capsule to the animal involved to ensure ongoing control of bloat.


Ingestion of monensin by dogs, horses and other equines may be fatal. Do not allow dogs, horses or other equines access to medicated water containing monensin. Dogs can be attracted to freshly regurgitated capsules, which may contain Rumensin™. In the case of ingestion, contact your veterinarian immediately. Ensure recommended doses are not exceeded. Care must be exercised when feeding concurrently with other antimicrobials.


Registered pursuant to the ACVM Act 1997, No. A9676.
See for registration conditions