The problem with most dog probiotics isn't the bacteria
It's that you can't tell what you bought. Most labels say 'probiotic blend' and stop there — no strain, no CFU count, nothing you could look up if you wanted to.
So you end up stacking. A probiotic for the gut, a fish oil for the coat, maybe a joint chew. Three tubs, three costs, and no way to attribute a change to any one of them.
And nobody tells you what timeframe to expect, so you're left guessing whether four weeks of nothing means it isn't working or means you haven't waited long enough.
If you want something faster than that, we'd rather tell you now than take your money and hope.
Choose your dog's size
Each pack is a one-month supply at the dose for that weight.
Your first 30 days, mapped out. Every order comes with an introduction schedule, a dosing chart for your dog's weight, and a note at day 21 asking what you've noticed. You're not left to work it out.
Reason 01
We name the strain. Most don't.
LactoSpore® — Bacillus coagulans — at 6 billion CFU per scoop, both printed on the pack. Go and read the label on what you're currently giving. If it says 'probiotic blend' and nothing else, you have no idea what you're buying or how much of it.
Reason 02
A spore, not a bacterium in a jar
Bacillus coagulans is spore-forming. The organism stays encased until conditions activate it, which is why it's shelf stable, needs no refrigeration, and survives a warm delivery van in February. Most refrigerated probiotics can't say that.
Reason 03
Then eleven more actives, all with quantities
Ashwagandha 25mg · Biotin 7.5mg · Boswellia serrata 55mg · Cordyceps militaris 100mg · Flaxseed 550mg · Kelp 300mg · L-theanine 30mg · MSM 200mg · Nutritional yeast 500mg · Vitamin E 20mg · Zinc 50mg. Every number disclosed. No proprietary blend.
Reason 04
Human grade, made in Australia
Produced in a human-food-grade facility here, not a pet-feed line. It contains nothing we wouldn't eat ourselves — and we have.
Reason 05
You're not left to work it out
A 30-day onboarding plan comes with every first order: how to introduce it to a suspicious dog, the dose for your dog's weight, and a prompt at day 21 asking what you've noticed. Switching supplements is where most people give up. We'd rather you didn't.
What you're giving now, and what's in this
Composition and terms only. We're not going to tell you what either product does to your dog.
Yes — LactoSpore®
Rarely
No
Yes — 6 billion per scoop
Sometimes
No
No — spore-forming
Often
No
11
0–2
Varies, undisclosed
Yes
No
No
Yes
Varies
No
Australia
Varies
Varies
90 days
Varies
Return to store
20–30%
Typically 5–10%
—
Free
Varies
—
What owners actually wrote
Chosen for what they describe and when, not for enthusiasm. Including one that isn't a rave.
Claire T. · Golden Retriever
He used to have diarrhea for a couple of days afterwards but since starting Marlo I've noticed his stomach handles it much better and his stools are overall better too, plus his breath seems much fresher.
N.L. · Japanese Spitz & French Bulldog
I have noticed their breath is much nicer and they are not licking their paws as much.
Stefan · four dogs
I was buying each dog separate supplements which was getting expensive and time consuming. The probiotic in this works better than anything I've used before.
Kylie · two large dogs
Happy with the product, but very expensive. I have 2 large dogs and I need 3 scoops each day.
Straight answers
How long before I'd know?
On the gut side, owners in our reviews most often described noticing something between days 10 and 21. Other areas take longer. If you need to see something inside a fortnight, we'd rather you knew that before ordering.
I'm already giving a probiotic — do I stop?
Yes, otherwise you won't know which product is responsible for anything. Finish what's open if you'd rather not waste it, then switch cleanly. The onboarding plan covers the changeover.
Eleven other ingredients sounds like it does nothing well
Fair challenge. Every quantity is on the label precisely so you can check it against what you'd buy separately — the probiotic is at 6 billion CFU, not a token sprinkle. Compare the numbers rather than taking our word for it.
It's more expensive than what I'm giving now
Against a single-strain probiotic, yes. Against a probiotic plus the other supplements you'd need to match the label, most people find it isn't. Work it out on your own stack — we'd rather you did the sum than trusted ours.
My dog is fussy
It's chicken flavoured and plant-based, so it suits dogs with a chicken allergy. Start at half a dose mixed through food. If they still refuse it, the guarantee covers you.
Can I pause or cancel?
Any time, from your account, no charge and no phone call.
Who is this not for?
A dog with a diagnosed condition should be seen by a vet — talk to them before adding anything. And if you want a visible change in under a fortnight, the timeline above is the honest answer and this probably isn't the right buy for you.
The strain is named. The dose is printed. The label has nothing hidden on it.
Pick your dog's size, pick a term, and we'll walk you through the first 30 days.
Free shipping · 90-day money-back guarantee · Pause anytime