IAH Sootha Nerves & Stress Paste
- Regular price
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$40.90 - Regular price
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- Sale price
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$40.90
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A high-dose B-vitamin, magnesium and tryptophan paste in a 30g syringe, for horses that become anxious or over-reactive in unfamiliar situations.
When to use it
Picky eating, box walking or fence pacing, sweating up, loose manure, poor concentration, spooky or irritable behaviour, and reluctance to work.
What's in it
B1, B2, B3 and B6 at high dose, plus magnesium and tryptophan. Deficiencies in B-group vitamins, magnesium or tryptophan have been linked to nervousness and hyperexcitability, and supplementing them has been reported to work as a mood stabiliser.
Nervous stress also upsets the gut, disrupting the balance of microflora and letting pathogens get a foothold.
Competition use
Contains no prohibited substances, so it is suitable for racing and competition horses. Always check your own discipline's rules.
A syringe suits a one-off — a float trip, a first outing, the farrier. For an ongoing problem, look at a daily powder instead.
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.

