GGround it
Boost™
Start here. Boost for the first 90 days to get your dog’s gut ready.
$109.00 $109.00 / bag
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Learn moreThe GROW System
The gut is like a garden. Fermented foods make it GROW.
Four unique powder formulas, four jobs. Use one, layer a few, or grow the whole garden over time.
Mix and match
Every powder has a place in your dog's gut garden.
Start with a reset, keep the gains, and support the system along the way. Pick the bags you want and the saving grows with the bundle.
RRoot it
Sustain™
Keeps the good bacteria going once you’ve Boosted for 90 days.
$69.00 $69.00 / bag
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Learn moreOOptimize it
Youthful Grasses & Sprouts™
Recommended: add it to Boost and Sustain for maximum benefits and results.
$59.00 $59.00 / bag
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Learn moreWWork the soil
Fiber & Fortifier™
The fiber side of the bowl: 13 whole foods that replace the pumpkin, the apple pectin and the chopping.
$46.00 $46.00 / bag
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Learn moreBuild your bundle
Mix and match the powders. The more bags you add, the more you save.
1 bag
—
Most popular2 bags
10% off
3 bags
15% off
Best value4+ bags
20% off
“This is the single most important upgrade to dog food in over 25 years.”
30-Day Taste Guarantee on your first order of any product. Made in small batches in the USA.
The GROW system
Build your dog's gut garden
Your dog’s gut is like a garden. For it to thrive, the good microbes living there need a healthy place to put down roots. Otherwise they just pass through and never do their job. That’s the problem with most gut supplements.
Gussy’s Gut® is different. Our fermented superfoods are pre-digested, so the nutrients are broken down and ready for your dog to actually absorb. Fed consistently, they help build the kind of healthy garden where good microbes settle in and stay.
Each of our powders does a different job in that garden. Use one, layer a few, or grow the whole thing over time.
What the letters mean
G · R · O · W
- yard
G · Ground it · Boost™
Boost™Plant the garden. 18 fermented superfoods for the first 90 days, so the good microbes have somewhere to settle.
- grass
R · Root it · Sustain™
Sustain™Keep it growing. The everyday blend after the first 90 days: nine fermented plants, each in a higher concentration.
- wb_sunny
O · Optimize it · Youthful Grasses & Sprouts™
Youthful Grasses & Sprouts™Feed the soil. Four grasses and three sprouts, sprouted and fermented, for dogs that eat grass or need extra vitality. The only blend for cats too.
- agriculture
W · Work the soil · Fiber & Fortifier™
Fiber & Fortifier™Tend the bed. 13 whole-food plants, 10+ distinct fibers, for firmer, easier poops and a fortified bowl. Not fermented, by design.
Why 90 days
Cell turnover takes time. So does a microbiome. Three things happen, in order, when you feed it every day.
-
Days 1–30 · Detox
Supports the body's natural detox pathways as the gut adjusts to fermented whole foods. Start low and go slow in week one, then feed the full dose every day.
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Days 30–60 · Inflammation
Supports a healthy inflammatory response as the good microbes settle in. This is when many owners first notice the lawn, the coat or the energy.
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Days 60–90 · Integrity
Supports the integrity of the gut lining as its tight junctions tighten. Judge the results here, not before. If you're not willing to give it 90 days, this product may not be right for you.
Mix and match
Rotate through the year.
Remember, this is just food that is fermented. It is as safe as eating kimchi or a really good sauerkraut, made from many superfoods. It's hard to get it wrong.
Use one, two or all four
Most owners start with Boost™. Add Youthful Grasses & Sprouts™ for grass and poop eaters, and move to Sustain™ after the first 90 days.
Rotate for variety
Just as you might rotate proteins, rotating the powders gives a wider spread of plants and prebiotic fiber over the year.
The more bags, the more you save
The 90-Day Reset sizes the bags to your dog and takes 30% off every delivery (40% over 100 lb), with free shipping on subscriptions.
Sourcing
From organic farms to your dog
We know where our ingredients come from: organic and regenerative farms we’ve worked with for years. Most supplement brands can’t tell you that. We can, and we’ll show you.
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? Guts change slowly. Stools often shift first, and skin and coat take longer, so we ask you to wait until day 90 to judge it.
4.8
14,500+ Happy Customers
Your dog's 90-Day Gut Reset
Boost™ sized to your dog's weight, delivered every 90 days.
- 18 Fermented Superfoods
- 100-Day Guarantee
Click here for ingredients
Cabbage*, Cauliflower*, Broccoli*, Cilantro*, Parsley*, Kale*, Collard Greens*, Dandelion Root*, Jerusalem Artichoke (Sunchoke) Inulin*, Turmeric*, Beet*, Ginger*, Papaya*, Alfalfa Grass*, Wild Blueberry*, Oregano*, Milk Thistle Seed*, Decaffeinated Green Tea Leaf Extract*
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.
Questions
GROW questions
Short answers, written by the people who make it. Still stuck? Ask us on the contact page.
Which product do I start with?
Boost™. It's the G in GROW: the ground you plant everything else in. Feed it for the first 90 days, then move to Sustain™ to keep the garden going. Youthful Grasses & Sprouts™ adds variety alongside either, and Fiber & Fortifier™ tends the soil with whole-food fiber.
How do I get better results?
Add a second powder. Each formula brings a different set of plants, so two or three together broaden the range of nutrients and prebiotic fiber your dog gets every day. Most owners start with Boost™. Youthful Grasses & Sprouts™ is the add-on for grass and poop eaters.
Fermented or non-fermented: what's the difference?
Boost™, Sustain™ and Youthful Grasses & Sprouts™ are fermented and work in the upper gut. Fiber & Fortifier™ isn't fermented; it adds whole-food fiber and works further down, closer to the colon. Together they cover more of the tract.
Why 90 days?
Cell turnover takes time. The microbiome shifts gradually, and nutrients need time to be absorbed before you can see the difference. Most dietary changes, for people too, need about 90 days to show. Feed it every day, without a break, then judge. If you're not willing to give it 90 days, this product may not be right for you.
How much do I feed?
1 teaspoon per 20 lb of body weight, once a day, for every powder. Sustain™ is ½ teaspoon per 20 lb; Fiber & Fortifier™ is 1 teaspoon to 1 tablespoon per 20 lb, depending on how much fiber your dog needs. Mix it into food with a splash of water, never dry, and never cook it.
Can it replace my dog's probiotic?
Many owners do, unless the probiotic was prescribed by their vet. Check with your vet before stopping anything they recommended.
Does it treat a condition?
No. Gussy's Gut® supports gut health; it isn't a treatment for disease and we don't make those claims. Please talk to your vet before starting, especially if your dog has a diagnosed condition.
What is the 30-Day Taste Guarantee?
Returns are welcome for a 100% refund, including shipping, within 30 days of your first order, limited to one pack with at least 50% unused. That's the whole policy. If your first order has several packs, one is eligible, so we suggest starting with one. Fewer than 1% of dogs have ever needed it.
Trusted by the vets who know
Hear it from the veterinarians
Integrative and raw-feeding vets on why they recommend fermented whole foods for the dogs in their care.
Dr. Ian Billinghurst
Father of Raw Feeding
“I start every gut recovery program with fermented foods”
Dr. Steve Marsden
Holistic Vet
“Fermentation is super important if you want to heal a leaky gut”
Dr. PJ Broadfoot
Holistic Vet
“Gussy's Gut Provides the nutrients that dogs need”
Dr. Coward
Holistic Vet
“Gussy's Gut mimics what animals have been eating for 20,000 years”
Dr. Nick Thompson
Holistic Vet
“Fermented vegetables supercharge the gut”
Dr. Eva
Holistic Vet
“I recommend this to all of my clients and they love Gussy's Gut”
Dr. Cathy
Holistic Vet
“Give it 60-90 days to feed the bacteria to fix the gut”
Dr. Matt
Holistic Vet
“The only way pets can get these nutrients is through the fermentation process”
GusGut notes from Rob, Gus & Dr. B.
Feeding tips, new batches, and the occasional Gus update. No spam.
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