Broken down before the bowl.
Two weeks of fermentation breaks down tough plant cell walls, so less arrives in the lower gut undigested.
Formulated with Dr. Ian Billinghurst
Shop by concern · Gas & gurgling
My dog clears the room.
Gas and gurgling are what an unsettled gut sounds like. Here's a gentle place to start.
- 14,500+ Happy Customers
- 18 fermented superfoods
- 30-Day Taste Guarantee
From our blog: Why Is My Dog So Gassy? What the Gut Is Telling You →
Funny until it isn't.
It's the after-dinner fog. The gurgling you can hear from across the couch. You laugh, open a window, and wonder if he's comfortable.
Gas is common. It's also one of the clearest signs of how the gut is handling food, and often the first thing owners notice changing.
Sound familiar?
- Gas after most meals
- Loud gurgling, especially in the morning
- Grass eating on walks
- Stools that don't look quite right
Where the gas comes from
Gas is a normal by-product of digestion, but a lot of it usually points at a gut working harder than it should. When food reaches the lower gut without being fully broken down, the microbes there go to work on it, and gas is what they make. The more undigested food that arrives, the more you notice.
Pace matters as much as the plan. Fiber and fermented foods build a steadier gut, but added too fast they can cause gas of their own, so we start at a quarter dose. Rich table scraps, sudden food switches and a dog who inhales dinner are worth ruling out too.
Where to start
Your starting point
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Step 1
Boost™
Ground it.
Why it helps here: Gas is what the lower gut makes from food that arrived undigested. Boost™'s 18 superfoods are fermented for two weeks, so the cabbage, kale, broccoli and cauliflower arrive already broken down, and the dandelion, sunchoke, ginger and papaya in the blend feed the microbes that keep digestion moving. Less undigested food reaching the lower gut, less gas.
¼ tsp mixed with water, building to 1 tsp per 20 lb over two weeks.
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Step 2 · with Boost™
Fiber & Fortifier™
Work the soil.
Why it helps here: Why more fiber might help speed things up: pumpkin, apple fiber and chicory root move food through at a steadier pace, so less of it sits in the lower gut fermenting into gas. Add it alongside Boost™ once the quarter-dose start is behind you.
Add it in week 3. Start at 1 tsp per 20 lb and adjust.
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Optional
Youthful Grasses & Sprouts™
Optimize it.
Why it helps here: Seven fermented young greens: wheatgrass, barley grass, oat grass and alfalfa grass, plus broccoli, alfalfa and cabbage sprouts. Chlorophyll-rich plant variety the gut community can use, fed with Boost™ for a steadier, quieter gut.
Add it at week 4, 1 tsp per 20 lb.
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After 90 days
Sustain™
Root it.
Why it helps here: The everyday blend keeps the same fermented foundation in the bowl after the Reset, so the gut isn't starting over.
See Sustain™ →
What to expect over 90 days
Every dog is different. If you see blood in the stool, stop and call your vet.
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Weeks 1–2 · Ease in.
Boost™ at a quarter dose, building up slowly. Fermented food added too fast can make gas of its own, so this is the one place not to hurry.
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Weeks 3–6 · Boost™ + Fiber & Fortifier™.
Full dose of Boost™, and Fiber & Fortifier™ goes in to keep food moving. This is when most owners notice the after-dinner fog thinning and the gurgling quieting down.
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Weeks 7–12 · Quieter evenings.
Used together, the two keep less undigested food reaching the lower gut. Gassy nights become the exception, not the routine.
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Day 90 · Look back, then decide.
Compare with week one. For most dogs the room stays fresh now. Many owners move to Sustain™ and keep Fiber & Fortifier™ in the bowl.
Real dogs, real results
How it's helped other dogs
Reviews from owners who started where you are, straight from our review app. We've opened it on this concern; pick All to read everything.
Browse by topic
No reviews on this one yet.
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Coat
Lindsay "It's been life changing"
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Itching
Diana "Healthy gut microbiome equals healthy skin microbiome"
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Poop Eating
Veronica "Her poop eating has definitely decreased"
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Energy Levels
Becky "Her energy levels are crazy!"
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energy levels
Tracey "He was happier, his entire demenour changed"
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Stool Quality
David "I immediately noticed stronger consistency with stool quality"
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Stool Quality
Dana "His poop is consistently good"
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Grass Eating
Emma "She hasn't eaten grass in months now"
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Grass Eating
Lauren "I gave it a week and they stopped eating grass"
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Itching
Theresa "She's not scratching anymore!"
Formulated with Dr. Ian Billinghurst, B.V.Sc.Veterinary surgeon · Creator of the B.A.R.F. diet · Author of four books on natural pet nutrition
Why 90 days? Gas often eases in the first weeks, but the gut community that keeps it quiet takes months to settle in. Give it the full 90 before you judge it.
14,500+ Happy Customers
Turn your dog's gas around
Your dog's 90-Day Gut Reset
Boost™ sized to your dog's weight, delivered every 90 days.
- 18 Fermented Superfoods
- 100-Day Guarantee
A quieter gut takes a season, not a weekend. Tell us the weight and we'll send the right number of 7.5 oz bags of Boost™ for 90 days, every 90 days, with Fiber & Fortifier™ as the add-on that keeps food moving.
We ask for 90 consistent days before you judge it. If you're not willing to give it 90 days, this may not be right for you.
GutAbles® treats
Reward them, and treat their gut between meals.
Every reward is a chance to keep the gut going. GutAbles® are one animal protein, a blend of Gussy's Gut® fermented organic superfoods and organic Manuka honey, dehydrated and never cooked, baked or extruded.
They work alongside the powder in the bowl, so the gut support carries on between meals, one treat at a time.
- Dehydrated, never baked
- One protein + fermented superfoods
- Organic Manuka honey
- For dogs
Awarded the 2025/2026 Treat List by Susan Thixton. See the list
How Gussy's helps
The science, in plain words
Variety, not one strain.
Fermentation creates probiotics and postbiotics from 18 different superfoods. A varied gut community tends to be a steadier one.
Eased in, on purpose.
We start at a quarter dose. The gut adjusts to new foods over days, not hours.
Read the research
These studies explain the mechanisms. None of them tested Gussy's Gut® products.
Our Chief Veterinary Advisor & Formulator
Dr. Ian Billinghurst
“This is the single most important upgrade to dog food in over 25 years.”
Dr. Ian Billinghurst, Chief Veterinary Advisor & Formulator
- Veterinary surgeon
- Creator of the B.A.R.F. diet
- Author of four books on natural pet nutrition
- Founder of the Billinghurst Institute
- Decades of species-appropriate nutrition work
Wild canines got their plants already broken down, from their prey's stomach or from food they buried and came back to. Dr. Billinghurst and Rob built Boost™ around that idea.
Meet Dr. Billinghurst →Questions
Common questions
Won't vegetables make gas worse?
Raw vegetables can, because dogs don't break plant cell walls down well. Boost™'s vegetables are fermented for two weeks first. Start low anyway, so the gut can adjust.
Should I switch foods?
You don't have to. Boost™ goes over whatever your dog already eats: kibble, canned, gently cooked or raw.
When should I call the vet?
If gas comes with vomiting, a swollen or hard belly, pacing or obvious discomfort, call your vet right away. A hard, swollen belly is an emergency.
Bloat vs. an upset stomach →
How do I give it?
Mix about 1 teaspoon per 20 lb of body weight into your dog's food with a splash of water, once a day. Never serve the powder dry. Start with a quarter of the dose and build up over one to two weeks. Don't cook it; heat breaks down what fermentation built.
What if my dog won't eat it?
Stir it into something they love with a strong smell, like fish oil, tuna water, plain yogurt, kefir or coconut milk. If they still won't eat it, the 30-Day Taste Guarantee covers your first pack (see below).
What's the 30-Day Taste Guarantee?
If you're a new customer and your dog won't eat it, the first package you buy of any product gets a no-questions-asked refund, including shipping. Return it within 30 days of delivery with at least 50% still in the package. If your first order has more than one pack, only one pack can be returned, so we suggest starting with one.
Read the full guarantee →
A calmer gut, a fresher living room.
Start Boost™ low and slow, sized to your dog for 90 days, with Fiber & Fortifier™ as the add-on.
