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Breathe or Immune: Airways or Everyday Defenses?
Breathe supports lungs and airways; Immune supports natural defenses. See how these two ImmuBiome formulas differ and which one suits your horse’s season.
- 4.93 from 5,590 reviews
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Both of these show up when the seasons turn, which is why owners so often ask which one they need. Put simply, Breathe is for the horse whose airways feel the dust and pollen, and Immune is for the horse whose whole system takes the hit from travel, crowds and change.
Side by side
| What | Breathe | Immune |
|---|---|---|
| Built for | Healthy lungs and airways, seasonal comfort | Natural defenses and overall resilience |
| Mushrooms | Cordyceps sinensis, Cordyceps militaris, Reishi, Chaga | Turkey Tail, Lion’s Mane |
| Live yeast | None | Saccharomyces yeasts |
| Colostrum | 1,500 mg | 1,500 mg |
| Probiotics | 3 billion CFU | 3 billion CFU |
| Prebiotics | 8,000 mg | 8,000 mg |
| Beta-glucans | 25% minimum | 25% minimum |
Choose Breathe for the dusty barn horse
If your horse lives in an indoor barn over winter, works in a dusty arena, or struggles when pollen counts climb, Breathe is the place to start. Its two Cordyceps species support healthy oxygen use, and Reishi and Chaga support a balanced response in the airways. It leads our Allergy Support collection.
Choose Immune for the horse on the move
Shows, clinics, new barns and new herd mates all ask a lot of a horse’s natural defenses. Immune is built on Turkey Tail and Lion’s Mane with live yeasts, and supports a balanced immune system from the gut out. It leads Immune Support. Our immune system post explains how the gut and immune system work together.
What about both?
The two share the same gut base, so most horses start on one. Owners whose horses travel hard through allergy season sometimes use both; give us a call at 1-888-31-HORSE or ask your vet before you combine them. Whatever you choose, good ventilation and low-dust hay and bedding come first.
Still deciding? Try the Formula Finder or see every tub size on Compare Formulas.
Questions owners ask
What is the difference between Breathe and Immune?
Breathe is built around Cordyceps, Reishi and Chaga for healthy lungs and airways. Immune is built around Turkey Tail, Lion’s Mane and live yeasts for natural defenses. Both carry 1,500 mg of colostrum and 3 billion CFU of probiotics.
Which one should I use for allergy season?
If your horse’s airways are what bother him in dust and pollen season, start with Breathe. If you also want broader support through travel and seasonal change, Immune is the usual second formula.
My horse is coughing. Will Breathe help?
A cough needs your vet first, since it can have many causes. Breathe is everyday nutritional support for healthy airways and isn’t a replacement for anything your vet prescribes.
Shop formulas
Shop Breathe and Immune
Every formula ships free on subscription, and you can return any tub within 30 days, even opened.
Breathe
4.9 (545)
From $69
Cordyceps, Reishi and Chaga with colostrum for healthy lungs and airways in dust and pollen season.
Immune
4.94 (529)
From $69
Turkey Tail, Lion’s Mane, live yeast and colostrum for natural defenses all year.
These statements are about nutritional support only. ImmuBiome supplements are not drugs and don't take the place of veterinary care. Talk with your veterinarian about your horse's specific needs.

