One sachet, one job: the story behind our new dog supplements

We made four new formulas, each with one job, and kept our daily sachet as the foundation. This is why we exist, who is on the box, and what we hold ourselves to.

Why Plentum exists

You notice everything about your dog. The second sniff at a full bowl. The scratch that wasn't there last week. The way they find your feet when the sky gets loud.

We're dog people first. Plentum started as a passion project, built for the dogs who shaped our lives, and the rule was simple: everything we make, we'd give our own.

So we went looking at what was already out there. We kept finding big promises on the front and thin print on the back. Chews held together with binders. Long lists of names with one small total at the bottom. We wanted a label you can read, doses we're willing to print, and honest words about what we know and what we don't.

Our dogs taught us the rest: keep a routine and notice small changes. We try to build the same way, with one clear job, done properly, every day.

• 5 formulasAll vet formulated. One job each.
• Every mg printedEach active and its amount per 2 g sachet, on the box.
• Every lot checkedEach lot ships with its own Certificate of Analysis.

The ritual: tear, pour, stir

7 a.m. They already know the sound. Every Plentum formula comes as the same flat, sealed 2 g sachet. You tear the top, pour it over the food they already eat, and stir. Add a little warm water if your dog likes a gravy.

There's no new bowl, no food switch and no scoop to level. Each sachet is one serving, and bigger dogs get more of them: one to four a day by weight.

The routine is the point. Tomorrow, you do it again.

1. 

   1. Tear. One sealed 2 g sachet, opened on the day you use it.

2. 

   2. Pour. Over the food your dog already eats. No new bowl.

3. 

   3. Stir. Add a splash of warm water if they like a gravy.

Swipe for all three steps.

One sachet, one job

For a while, one sachet was enough. Then dog parents kept asking us the same four questions. What helps a tummy that's off after a food switch? What helps a dog stay settled in a storm? What can I give a dog who scratches every spring? How do I help my dog hold a healthy weight?

Those are four different questions. One formula can't answer all of them well, so we didn't try. We kept Microbiome Care as the everyday foundation and built four focused formulas beside it. Each one has a single job, and its name tells you what that job is. Meet all four on our new formulas page, or read on.

Sachet, chews or scoop?

Dog supplements mostly come in three shapes: soft chews, a tub of powder with a scoop, or a single-serve sachet. Here is how they differ in the ways that matter on a busy morning.

A general comparison of formats, not of any particular brand. Check the label and the serving size of anything you buy.

The dogs on our boxes

Every box carries its own illustrated dog, and no dog ever moves to another formula. They're how you tell the sachets apart at a glance on a busy morning.

• Microbiome Care has a golden dog sitting in the lavender, the steady one, there every day.
• Gut Restore has a corgi flat on its back, belly up. A comfortable tummy looks like that.
• Calming Care has Pip, a spotted pup asleep on a lavender bean bag. Calm, not sedated.
• Itch & Immune Care has Copper, a golden retriever with eyes closed in a breeze full of leaves.
• Metabolic Care has a beagle clearing a log mid-leap, with energy for the walk.

Look closer and you'll find the same paw on a looping line on every box. It ties the range together: same ritual, same standards, a different job.

How we hold ourselves to it

A promise is only useful if you can check it. Here is what ours mean in practice.

• Every lot tested. Each lot has its own Certificate of Analysis. Lots of the four new formulas are tested for Salmonella, E. coli, coliforms, Staphylococcus aureus, molds, dryness and live probiotic count. See the first-lot results.
• Real doses on the label. Every active and its amount in milligrams per 2 g sachet, plus directions by weight and cautions. See the research behind each active.
• Vet formulated. All five formulas, from the foundation to the four new ones.
• No binders. A powder doesn't need a binder to hold a shape. Check the ingredient list on any box.
• Made with care. The four new formulas are made in Canada in an FDA-registered facility, following current Good Manufacturing Practices. Microbiome Care is made in the USA. Every box says “Manufactured for Plentum Inc., New York, NY”.

While the new sachet line ramps up, every sachet is weight-checked on a balance before it goes in a box.

Where a study exists, it studied an ingredient, not a Plentum product, and we say so. We haven't run clinical trials on our own formulas, and we'll never say we have.

The research behind the ingredients

We picked each active for its job, then read what has been published about it. Here is one ingredient per formula: what the studies looked at, what they found, and how the amount in a sachet compares. These are studies of the ingredient, not of a Plentum product, and we say so every time.

Microbiome CareGut RestoreCalming CareItch & Immune CareMetabolic Care

In a 14-day placebo-controlled study in 24 dogs, the oral-health postbiotic used in Microbiome Care was associated with 27% lower breath sulfur compounds than placebo. The study was funded by the ingredient's supplier and tested the ingredient alone, not Plentum.

A second 14-day placebo-controlled study in 24 dogs, at a lower 150 mg dose of the same postbiotic, found breath sulfur compounds 26% lower than placebo on day 14. Supplier-run; tested the ingredient, not Plentum.

Sordillo A et al. Animals 2025, doi:10.3390/ani15111596 · Sordillo A et al. Journal of Veterinary Dentistry 2026, doi:10.1177/08987564261437296

In a 35-day randomized study in 25 healthy kennel dogs, S. boulardii did not change stool scores but was associated with lower fecal markers of gut irritation and stress hormones. Tested the yeast alone, not Plentum.

S. boulardii is one of five strains in the proprietary probiotic blend (L. casei K9-1, L. fermentum K9-2, L. brevis WF-1B, L. reuteri WF-1 and S. boulardii), 10 billion CFU per sachet. The box doesn't print each strain's share, so we don't compare doses.

Meineri G et al. Veterinary Sciences 2022, doi:10.3390/vetsci9080389

In an open-label study in 33 cats, L-theanine tablets were well accepted and owner-rated stress signs fell over 30 days. There was no placebo group and the maker co-authored it; not a dog study and not Plentum.

Calming Care has 200 mg of L-theanine per sachet, with GABA, magnesium and L-tryptophan. Dog research on L-theanine is still limited, and we'd rather tell you that than overstate it.

Dramard V et al. Irish Veterinary Journal 2018, doi:10.1186/s13620-018-0130-4

In a 28-day placebo-controlled study in 30 healthy dogs, the immune-health postbiotic used in Itch & Immune Care was associated with better skin-and-coat scores and lower scores on an itch rating scale than placebo. The supplier funded the study, and it tested the ingredient alone, not Plentum.

The study used 150 mg a day. One Itch & Immune Care sachet has 250 mg of the postbiotic (CIHP), alongside algal DHA, colostrum and quercetin.

Sordillo A et al. Animals 2025, doi:10.3390/ani15142019

In exercising Labrador retrievers, 250 mg/day of L-carnitine was associated with better activity and lower muscle-strain markers. Not a weight-loss study; not Plentum.

In obese pet cats on a supervised weight-loss diet, adding L-carnitine was associated with faster weight loss. Cats, not dogs; diet did most of the work; not Plentum. Metabolic Care has 75 mg per sachet, 75 to 300 mg a day by weight, alongside portion control and exercise.

Varney JL et al. Journal of Nutritional Science 2017, doi:10.1017/jns.2017.4 · Center SA et al. Journal of Veterinary Internal Medicine 2000, doi:10.1892/0891-6640(2000)014<0598:tcameo>2.3.co;2

Ingredient studies, not studies of a Plentum product. Some were funded by the ingredient supplier. Our formulas have not been tested in clinical trials. See every study we track

The foundation: Microbiome Care

Microbiome Care came first, and it stays first. It is the everyday sachet: an oral-health postbiotic, a prebiotic, fish oil and colostrum to support gut and oral health, skin and coat. In our customer survey, about 70% of owners noticed fresher breath. Results vary.

Gut Restore: a settled gut

For food switches, travel and the days a tummy feels off. Gut Restore pairs a proprietary probiotic blend (10 billion CFU, including S. boulardii) with psyllium, slippery elm and organic pumpkin. Its one job: normal bowel function and healthy stool consistency.

Calming Care: calm, not sedated

For storms, car rides, vet visits and time alone. L-theanine, GABA, magnesium and L-tryptophan, with chamomile and a postbiotic, and no melatonin. Its one job: a calm, relaxed demeanor during situational stress, while your dog still feels like themselves.

Itch & Immune Care: comfortable skin and coat

For seasonal scratching and a coat that has lost its shine. A canine immune postbiotic, algal DHA, colostrum and quercetin. Its one job: a normal immune response to environmental and seasonal triggers.

Metabolic Care: a healthy weight, with the plan

For dogs working toward a healthy weight with measured meals and more walks. Acacia fiber, L-carnitine and white kidney bean extract. Its one job: support proper weight management. It sits alongside portion control and exercise. It doesn't replace them.

How to choose

Start with what you're noticing in your dog right now. If you're not sure, our 60-second quiz asks about your dog and points you to a formula and a size.

• One thing on your mind? Pick the formula with that job.
• Two things? A two-formula bundle pairs them, and the total sachets are set by weight.
• Gut Restore and Microbiome Care work best one after the other, not together, so we don't bundle them.
• Your vet comes first. If your dog has a health condition or takes medication, ask before starting anything new.

Which one? Side by side

The four new formulas are on pre-order now and ship by Monday, October 26. For launch, the code LAUNCH25 takes 25% off one-time purchases of the new formulas and bundles until October 25 at 11:59 PM ET. One use per customer, it can't be combined, and discounted orders are final sale.

We'll show every dose and tell you what we know. Your dog's story makes the next formula better.

Your next step

Four steps from here to the first sachet. Take them in order, or jump to the one you need.

1. Answer five quick questions

   Tell us what you notice and your dog’s weight. The finder picks a formula and a size.

   Take the full quiz

2. Open your match

   Each formula page shows the full label, the dose by weight and the price per day. Two things on your mind? Start with a bundle.

   See all five formulasSee bundles

3. Check the research

   Every study we track, ingredient by ingredient, with what it does and doesn’t show.

   Read the research

4. Pre-order with LAUNCH25

   25% off one-time purchases of the four new formulas and bundles until Oct 25, 11:59 PM ET. Pre-orders ship by Mon Oct 26. One use per customer, can’t be combined, and discounted orders are final sale.

   Pre-order the new formulas

When you start a new formula, keep simple notes for the first 12 weeks. Our free checklist shows what to look for, week by week.

Written by the Plentum Editorial Team. Amounts come from the printed Product Facts panels. Plentum makes the products named here. These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.