Vytamyx Equine Microbiome Support (MBS)
- Regular price
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$39.50 - Regular price
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- Sale price
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$39.50
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Vytamyx MBS is a scientifically formulated synbiotic designed to support a balanced gut microbiome as the foundation of overall health and wellbeing in horses.
The equine digestive system relies heavily on microbial fermentation within the hindgut to convert fibre into usable energy and nutrients. Modern management — changes in diet, pasture quality, workload, travel and environment — can all influence microbiome stability. Even small shifts in microbial balance can impact digestive efficiency and overall consistency.
MBS combines targeted probiotic strains with complementary prebiotic substrates, supported by humates and fucoidan-rich kelp, to help maintain a stable gut environment and microbial diversity. A balanced microbiome supports metabolic function, behavioural balance, skin condition and overall resilience — providing a practical, consistent approach to whole-horse wellbeing.
Active Ingredients
- Probiotic Blend (multi-strain beneficial bacteria)
- Prebiotic Complex
- Humates
- Kelp (source of fucoidans)
Directions for Use
- Foals: 5–10mL daily
- Horses and ponies under 500kg: 20–40mL daily
- Horses over 500kg: 40–60mL daily
The Science
Humates, including fulvic and humic acids, and fucoidan-rich marine polysaccharides represent a complementary approach to microbiome support when combined with targeted probiotic strains such as Bacillus subtilis.
Humates contribute to gut environment stability, supporting nutrient interaction and helping maintain conditions that favour beneficial microbial activity. Fulvic acid, in particular, is associated with enhancing mineral transport and supporting the interaction between nutrients and the gut lining.
Fucoidans, derived from brown seaweeds such as Ascophyllum nodosum, provide complex sulphated polysaccharides that act as functional substrates within the gut, supporting microbial diversity and the activity of beneficial populations.
Combined with Bacillus subtilis — a resilient spore-forming probiotic capable of surviving gastric conditions and colonising the hindgut — this creates a synergistic system: the probiotic contributes to microbial balance and enzymatic activity, while humates and fucoidans provide a supportive environment and substrate base. Together this supports the stability, diversity and efficiency of the microbiome, underpinning digestion, nutrient utilisation and overall physiological balance in the horse.
Shipping Info
Shipping & Pickup Information
Flat Rate Shipping via Post Haste (Excludes Feed):
- North Island: $10 (1-2 working days)
- South Island: $20 (2-3 working days)
- Rural Surcharge: +$6 (extra time may apply)
Feed Shipping per bag via Post Haste:
- Central North Island: $14 Per Bag
- Upper North Island: $18 Per Bag
- Lower North Island: $28 Per Bag
- South Island: $55 Per Bag
- Rural Surcharge: +$6 (extra time may apply)
Orders placed before 1 PM are usually shipped the same day.
Pick-up Info
Click & Collect - Tauranga Store
Free 24/7 pickup from our secure after-hours collection box. Email us if you’d like to collect after hours and we’ll send you the instructions.
Try Before You Buy - No Obligation
We keep limited stock in-store, so order online to secure the items you want to try.
At checkout, choose Click & Collect as your delivery method, then Cash on Delivery (COD) as your payment method. You won’t pay anything online.
We’ll bring your items into the store and let you know when they’re ready. Try them on or check them over in person. If they’re not right, leave them with us. No problem at all. If you keep them, pay in store when you pick up.
Excludes saddles.
Returns & Exchanges
No problem! We offer 30-day returns and exchanges on items in new, resalable condition with original packaging. Returns are issued a full store credit, or a refund less a 10% processing & restocking fee. See our full policy.
FAQ
All your questions, answered.


Not sure what rug your horse needs right now? Our free Horse Rug Forecaster checks your local weather and tells you what rug weight your horse needs today, tonight and over the next 3 days. It works anywhere in New Zealand and adjusts for clipped horses and horses that feel the cold.
The thermoneutral zone is the temperature range where the body can maintain its core temperature with little to no extra energy expenditure. Humans need it much warmer, at around 25–30 °C, but for horses it’s much broader at 5–25 °C.
This difference means we should avoid rugging horses based on how cold we feel. Over-rugging can lead to serious health issues, including metabolic problems and thermoregulatory dysfunction.
Tips for Choosing a Winter Rug Weight
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Clipped horses may need a heavier gram fill to stay comfortable.
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Remember: horses warm themselves more easily than they cool down under a rug. If unsure, choose a lighter rug.
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Check your horse regularly to make sure they are neither too hot nor too cold.
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Consider your horse’s age and natural ability to stay warm.
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As a general guide, a healthy unclipped horse with shelter usually doesn't need a winter rug until it feels colder than about 5 °C, but always adjust for your horse’s individual needs.
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Always ensure rugs are waterproof. A wet rug is worse than no rug at all.
This is an indicative guide only. Always take into account factors such as wind chill, your horse’s age, weight, and condition. For advice based on your local forecast, try the Horse Rug Forecaster.

