Advanced intestinal support for stronger lifetime performance.
Fed in milk or milk replacer straight after colostrum, Tonisity Rum-Xm Delivers advanced intestinal support. With key nutrients, it drives lifetime performance and calves that are +15 kg heavier by day 160
Highly-palatable isotonic protein solution designed to support intestinal development in calves, kids and lambs
Supports growth and weight gain
Supports intestinal function
Supports digestive development
Encourages feed and water intake
Supports healthy growth and weight gain
Helps young ruminants get off to the right start
Safe for all ruminant breeds
We Feed the Gut FirstFor Stronger, Heavier Calves, Lambs and Goat Kids
Tonisity Rum-Xm is a highly palatable supplement developed by leading veterinarians to be easily incorporated into any feeding routine.
Mixed directly into fresh milk or milk replacer, it delivers targeted intestinal nutrition to support digestive development during the critical early stages of life.
Helping young animals achieve stronger growth performance from the very beginning.
Poor intestinal development costs more than you think.
When young ruminants struggle to absorb nutrients efficiently, the effects ripple through their future performance:
slower growth
delayed weaning
weaker immunity
lifetime productivity
Across any production system, every extra day to reach target weight means higher costs, more labour and lost potential.
That’s why Rum-Xm is ideal for:
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Farmers looking to raise stronger, more resilient youngstock
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Veterinarians aiming to improve outcomes in early-life nutrition
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Units aiming to support feed intake, growth and early-life performance
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Operations seeking more reliable pre-weaning performance
Whether you manage calves, lambs or goat kids, Rum-Xm provides a practical, science-backed solution to support early-life performance from the very first milk feeding.
Speak to a ruminant expert
Let our experts get in touch with you directly to find the best solution for you, tell us a little more about your setup
This is Not a Dream.
These Are Verified On-Farm Results
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Supports Gut Resilience
Calves receiving Tonisity Rum-Xm showed a positive numerical trend towards fewer cases of scour, supporting digestive resilience during the critical early stages of life.
By helping maintain intestinal function, Rum-Xm supports more consistent growth and helps keep calves on track through the pre-weaning period.
Study 25-006-B-P
Designed for All Young Ruminants
Dairy & Beef Calves
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Supports early intestinal development
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Promotes stronger daily growth and condition
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Supports resilience during digestive challenges.
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Supports more uniform growth.
Goat Kids
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Supports healthy growth.
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Supports intestinal development and early growth
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Helps maintain condition during stress periods
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Promotes consistent, reliable performance
Lambs
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Supports digestive development.
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Supports animals during periods of dietary transition
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Encourages steady, healthy growth
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Contributes to more uniform groups
Confidence Backed by Science.
Tonisity is a global animal nutrition company trusted by farmers and veterinarians in more than 60 countries.
Backed by scientific research, Tonisity Rum-Xm delivers advanced intestinal nutrition during the most critical stages of early life, helping support intestinal function, healthy growth and stronger lifetime performance.
Give Every Animal the Strongest Start
Support every milk feeding with targeted intestinal nutrition and help calves, lambs and goat kids build the foundation for lifelong performance.