Brookby Herbs
Immune Booster Plus for Horses — Natural Immune & Respiratory Support
Immune Booster Plus for Horses — Natural Immune & Respiratory Support
Easy to add to food or water
🔒 100% money-back guarantee
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NZ delivery from $8.50. Free urban delivery over $150. Rural surcharge applies.
✔ Trusted by NZ horse & dog owners for over 25 years
"I'm absolutely thrilled and impressed with the results of Brookby Herbs products. I wouldn't have believed it was possible." M.Wickham.
Immune Booster Plus is a natural, alcohol-free herbal extract for horses needing extra immune and respiratory support. It is especially useful during winter, seasonal changes, or times when your horse is run down, coughing, snotty, or recovering from a bug.
Made in New Zealand in an organic cider vinegar base, this traditional herbal blend contains echinacea, garlic, marshmallow, mullein, rosehips, kelp, Siberian ginseng and yarrow to support healthy immunity, clear airways and everyday vitality.
What customers tell us
One customer told us that after using Immune Booster Plus, her horse’s snotty nose and cough improved within a few days. She said, ‘Thanks for a fantastic product that truly does work wonders. "
May support:
- Respiratory comfort
- Coughing and throat irritation
- Recovery after seasonal bugs
- Stamina and vitality
- Horses during winter or seasonal changes
Key herbs in Immune Booster Plus
Echinacea
Traditionally used to support immune function.
Garlic
Traditionally used to support respiratory and immune health.
Marshmallow and Mullein
Traditionally used to soothe the throat and support clear airways.
Rosehips and Kelp
Naturally rich in nutrients, including vitamin C and minerals.
Siberian Ginseng
Traditionally used to support stamina, resilience and vitality.
Yarrow
Traditionally used in herbal formulas for seasonal wellness support.
Which size should I choose?
500ml — good for trying the product or smaller horses.
1 litre — best everyday value for regular use. At 20ml daily, a 1 litre bottle lasts around 50 days.
5 litre — best for multiple horses or long-term seasonal support.
Feeding guide
Up to 13.2hh: 5–10ml daily
13.2hh–15.2hh: 20ml daily
15.2hh and over: 30ml daily
Mix daily with feed or syringe directly into the mouth. The dose may be given once daily or split between feeds.
Shake well before use. Store in a cool place away from direct sunlight.
A 1 litre bottle will give you 50 days dosage at 20 mls daily
- NZ made
- Alcohol-free
- Organic cider vinegar base
- Trusted by horse owners for over 25 years
- 100% money-back guarantee
- Flat NZ shipping $8.50
"I wanted to give you some feedback on your Immune Booster Plus which I purchased for my horse. After two days of treatment, his rather disgusting snotty nose had totally cleared, and another two days following this, his cough has gone too. Thanks for a fantastic product that truly does work wonders. I will be recommending it to everyone. Thanks again Jackie- my horse is happy/ I am happy" . Regards Nicki Taylor
"Recently one of my horses developed the most awful cough. I was hoping it would just right itself but after a week he was really no better so I bought the herbal Immune Booster plus and within 4 days he was better.Thanks for your great products"
Penny
I brought the Immune Booster Plus as suggested for my horses cough and cold.
I did think about the vet as it seemed to be getting worse, but after a couple of days with the herbs it's just about cleared up. Thanks so much, will be recommending your products."
Cheers, Colleen
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Frequently asked questions
Can I give Immune Booster Plus to my horse every day?
Yes. It can be given daily as part of your horse’s seasonal immune support routine.
Is Immune Booster Plus alcohol-free?
Yes. It is made in an organic cider vinegar base and contains no alcohol.
When should I use Immune Booster Plus?
It is commonly used during winter, seasonal changes, after your horse has been run down, or when extra immune and respiratory support is needed.
Can I use it for a coughing horse?
Immune Booster Plus contains herbs traditionally used to support respiratory comfort and soothe the throat. If your horse has a persistent, severe, or worsening cough, contact your vet.
How long will a 1 litre bottle last?
At 20ml per day, a 1 litre bottle lasts approximately 50 days.
