Trial Size Microbiome Booster | Gut & Immune Support for Cats & Dogs

$8.00

Healthy gut support — made easy to try. The Trial Size Microbiome Booster Postbiotic delivers the same science-backed, human-grade formula as our full-size product, in a convenient 8-gram pouch with 20 servings for cats or small dogs. It’s an easy, low-pressure way to support digestion, immune health, and overall well-being.

Estimated Standard Delivery: Feb 15 - Feb 21

Microbiologist-formulated & human-grade

Supports digestion, mood and immunity

100% concentrated fermented goodness - shelf-stable, zero fillers

Learn more about our certifications

What it Does

Microbiome Booster supports the following:

Digestive health and nutrient absorption

Strengthens immune response and reduces inflammation

Balanced mood and emotional support through the gut-brain connection

Safe for kittens, adults, and senior pets

Works beautifully with probiotics or on its own

Why Try the Trial Size?

Low-commitment, high benefit — 20 servings to test results before going full-size

Add-on friendly — a simple upgrade to your Trial or Basic Kit order

Gentle and effective — microbiologist-formulated for all life stages

No refrigeration needed — shelf-stable and travel-ready

Easy to Use - Sprinkle or mix into food with no strong smell or taste

No Fillers - Human-grade ingredients with full transparency

What Makes it Special

All the benefits of probiotics - with faster, more stable results.

 

Unlike probiotics, postbiotics deliver benefits directly — no refrigeration, no survival concerns, and no guesswork. Microbiome Booster is shelf-stable, easy to use, and pairs seamlessly with homemade, raw, or commercial diets. 

 

Made from human-grade fermented cultures of four beneficial bacteria species, it’s gentle enough for kittens and powerful enough to support senior cats daily.

Ingredients

Microbiome Booster contains a broad range of metabolites fermented from the following lactic acid bacteria:

 

Bifidobacterium animalis ssp. lactis, Lactobacillus acidophilus,Propionibacterium freudenreichii ssp. shermanii, and Streptococcus thermophilius cultures

Shipping

$4.95 Flat Rate Standard Shipping for all orders under $45 

Free Standard Shipping on all orders $45 and up

Express Shipping is available on any order for $9.95

For more information, please see our Shipping Policy page.

Return Policy

We do not offer refunds on Trial Size Superior Feline products. We only charge a minimal amount so you can easily and affordably see if your pet will like the product before committing to a full-size product purchase. This also helps us keep prices affordable for customers and reduces unnecessary waste and expenses.

 

Please view the details of our Policy here: Return/Refund Policy

Product Information

Title

About 70% of the immune system resides in the gut, and research continues to show how gut balance affects everything from skin health and inflammation to stress response and energy levels.

 

When the gut microbiome is supported, your pet can better digest and absorb nutrients, maintain a strong immune response, and produce mood-regulating neurotransmitters like serotonin and dopamine. When it’s disrupted — due to stress, poor diet, antibiotics, or inflammation — signs such as digestive upset, dull fur, fatigue, or changes in appetite and behavior may appear.

 

Our Microbiome Booster Postbiotic helps support a healthy gut environment by delivering beneficial compounds — not live bacteria — that encourage balance and resilience from the inside out.

How to Use

Title

1 serving = 1 level scoop (⅛ tsp)

Using the included measuring scoop, sprinkle the powder on top of or mix into food:

For Cats & Small Dogs under 30 lbs:

Once per day (1 serving)

For Dogs over 30 lbs: 

Twice per day (2 servings)

Title

Picky Eater Tip: 

Blend 1 scoop of Microbiome Booster with 1 tsp of water and a half stick of Churu (or other licky stick) and make a tasty soup for kitty to lap up!

Prebiotics, Probiotics and Postbiotics - Explained

This simple guide breaks down how prebiotics, probiotics, and postbiotics work — and why postbiotics can be especially effective for cats.

Title

Prebiotics, probiotics, and postbiotics each play a different role in your pet’s gut health. This simple, science-backed breakdown shows how they work, why the gut-immune connection matters, and which option may be the most effective for cats and dogs.

FAQs

Title

Simple answers to common Microbiome Booster questions

What’s the difference between a probiotic and a postbiotic?

Probiotics are live bacteria that support digestive health — but they need the right environment to thrive.

 

Postbiotics are the beneficial nutrients and metabolites that those bacteria produce. They deliver faster, more consistent results and don’t require refrigeration.

 

Together, postbiotics and probiotics can work synergistically for maximum gut health.

 

For additional information, please see our blog post: Postbiotics for Pets

What does it do for my cat or dog?

Microbiome Booster supports the following:

A healthy, balanced gut microbiome

Immune system strength (up to 80% of immune cells reside in the gut!)

Soothes digestive discomfort and promotes regular, healthy stools

Encourages mental and emotional balance through the gut-brain connection

Improvement in nutrient absorption from food

Who should use it?

Every cat or dog can benefit — but it’s especially helpful for:

Kittens and puppies developing healthy immunity

Pets with sensitive stomachs or digestive issues

Older pets needing extra gut and immune support

Cats transitioning to homemade or raw diets

Pets recovering from antibiotic use or illness

It's human-grade, so pet parents can use it, too!

Can I use it with probiotics or other supplements?

Yes! In fact, it works beautifully alongside probiotics.

 

The postbiotics in Microbiome Booster help create an environment where beneficial bacteria can thrive, amplifying the effects of your probiotic.

How should I store it?

Keep sealed in a cool, dry place - a kitchen shelf, cupboard or pantry is ideal.

 

Because it’s shelf-stable and doesn’t contain live bacteria, no refrigeration is needed.

How long before I see results?

Many pet parents notice improved stool consistency, digestion, and energy within 1–2 weeks of daily use.

 

More subtle benefits like improved coat, immunity, and calmer mood may appear after a few weeks of consistent use.

You might also like....

Customer Reviews

Based on 16 reviews
94%
(15)
6%
(1)
0%
(0)
0%
(0)
0%
(0)
D
Danielle G.
It worked!

For background, I am giving my cat a 90-day course of 2 very strong antibiotics to combat a severe middle ear infection. She has always had an amazing gut, but these medicines have changed that. In order to counteract some of these effects, I gave this product a try. I space it out from her meds by 6 hours and it worked!! It took effect about 1 day after she started and it has been a godsend (saves a lot of unpleasant messes). It works better than prescription probiotics that we were prescribed. I am very impressed with the effectiveness!! Highly recommend.

C
Cat
My cats love this

Grand rising! Thank you, Superior Feline Team!

We bought all the trial-size packets, including the grass and catnip seeds, and this was our first time making homemade cat food. We sous vide clean ingredients, mixed in the food mix and topper—and our 3 cats loved it right away.

One of our cats had UTI issues, so we wanted to give them more hydration and a better diet. This made it super easy. No hesitation, no throwing up, and for the first time ever—they actually enjoy wet food! And all of them are usually super picky.

Really happy our hydrotherapist, Dr. Melissa, referred us here. Definitely repurchasing but full size products next!

H
Heidi C.
Microbiome Booster

The cats devour their raw food and don’t even notice the booster! Their poops have been great! No constipation! Yay!

Oh Yay! We're so happy to hear that the Microbiome Booster is helping your cats! Thank you so much for sharing!

B
Betsy D.
My cat thinks its a treat

My cat has digestive issues, and often acts like he wants to eat but feels too ill, so he only wants to eat grass and throw up. But the smell and taste of this powder seems to bypass the problem-- if he smells it and I sprinkle a tiny bit on his food, he gobbles it all up and is fine! I'm so glad to find something that is healthy to use to help him eat more!

We're so glad your little guy enjoys the Microbiome Booster flavor and that it is helping with his digestion! Thank you for sharing your experience!

K
Kerry J.I.
My vet said okay!

My 5 year old cat has diabetes and is on prescription food and a new pill therapy. She doesn't need to have insulin shots. I asked him about giving her Microbiome Booster and he approves! Thanks!

Thanks so much for sharing, Kerry! YAY for Vet approval! So glad your sweet cat is doing well! Love the picture - she's so pretty!

m
mariana c.
A Must!

I first tried this product for my dog who had a stubborn case of diarrhea. The next day after giving him a generous amount, the diarrhea stopped. I then decided to also give it to my cat just for general gut health and I noticed that the zoomies she would get sometimes after using the restroom (recently learned this might be due to constipation) stopped. So I will be upping her wet food and continue this product for both my cat and my dog ! :)

Thank you so much for sharing your experiences with the Microbiome Booster! So happy to hear both your dog and cat are benefiting from it with positive results! YAY!

For Curious Cats Only:
😼

JOIN THE COOL CAT CLUB!

Title

Support

Shipping

Return/Refund Policy

International Inquiries

Contact Us

Learn More

About Our Company

Why Homemade Cat Food?

FAQs

How We Ensure Quality

Resources

Homemade Cat Food Directions Hub

The Cat's Meow Blog

Free DIY Cat Food Recipe

International Inquiries

Policies

Privacy Policy

Terms of Service

Disclaimer

Cookie Policy

Support

Shipping

Return/Refund Policy

International Inquiries

Contact Us

Learn More

About Our Company

Why Homemade Cat Food?

FAQs

How We Ensure Quality

Resources

Homemade Food Directions Hub

The Cat's Meow Blog

Free DIY Cat Food Recipe

International Inquiries

Policies

Privacy Policy

Terms of Service

Disclaimer

Cookie Policy

Support

Shipping

Return/Refund Policy

International Inquiries

Contact Us

Learn More

About Our Company

Why Homemade Cat Food?

FAQs

How We Ensure Quality

Resources

Homemade Food Directions Hub

The Cat's Meow Blog

Free DIY Cat Food Recipe

International Inquiries

Policies

Privacy Policy

Terms of Service

Disclaimer

Cookie Policy

Title

Superior Feline

Superior Pet Products LLC

Eastvale, CA

meow@superiorfeline.com