Support your cat’s digestive health, boost immunity, and promote regularity with vet-formulated probiotics made for sensitive feline stomachs.
Results you’ll notice with daily Probiotic use:
Fewer Hairballs on the Floor
Better Digestion, Better Mood
More Regular, Less Smelly Poops
Noticeably Shinier & Softer Coat
Select Your Plan:
Buy Once
Autoship &
SAVE 15%
SHIP EVERY:
Automatically delivered on your schedule
Save 15% every order
No commitment, cancel anytime
Free Shipping Included
“My five year old cat that I rescued as an abandoned kitten has always had trouble with smelly gas, and occasional diarrhea. Nothing helped and no diagnoses of any stomach problems. The probiotic powder is amazing. It took a week but cleared up all the problems! No more toxic smells while he sits on my lap, and he seems to feel better also.”
Kim B.
Verified Buyer
Frequently bought together
4.8 | 15 Reviews
Hairball Support Gel for Cats
$16.99
Prevents hairballs and naturally promotes gentle elimination.
ADD
Prevents hairballs and naturally promotes gentle elimination.
INGREDIENTS
Guaranteed Analysis per 1.00 cc serving:
Crude Protein (min)19.00 %
Crude Fat (min)1.50 %
Crude Fiber (max <0.20%
Moisture (max)3.80 %
Ash (max)2.43 %
Calorie Content:
3837 kcal/kg; 4.60 kcal/kg
Inactive Ingredients:
FOS (fructooligosac- charides), bacillus coagulans, enterococcus faecium, lactobacillus acidophilus, natural chicken flavor
WHY PROBIOTICS
Boosts Digestion & Immunity Naturally: Supports your cat’s normal appetite, digestion, and immune defenses with one billion CFU of live, active probiotics in every serving.
Veterinarian-Formulated for Real Results: Crafted by vets and manufactured in Vermont, this science-backed formula helps maintain a healthy gut microbiome - your cat’s first line of defense.
Tasty & Fuss-Free: With a savory chicken liver flavor cats crave, this powder mixes easily into food—no pills, no stress. It’s perfect for picky eaters or cats with sensitive stomachs, encouraging them to enjoy their meals while receiving essential daily support.
Clean Ingredients You Can Trust: Free from corn, artificial flavors, and dyes. Just pure, effective support for your cat’s health.
Daily Gut Health Made Simple: Just two scoops a day helps maintain a healthy digestive system and boosts vitality, so your cat feels their best every day—more playful, comfortable, and full of life.
Feeding Guide
Two scoops per day, mix with food.
Shipping & Returns
Free Shipping (arrives in 5-8 business days)
All orders above $30 are eligible for free shipping! Please note that we only ship to addresses in the lower 48 of United States. We do not ship internationally or to AK/HI at this time.
Expedited Shipping (arrives in 2-3 business days)
Flat rate of $19.99 USD. Orders placed before 3pm EST Monday - Friday (non holidays) ship the same day. In-stock items are normally shipped within 1-2 business days. Expedited and overnight shipping options are not available to Hawaii, Alaska and PO Boxes. We do not ship on holidays.
Hastle-free Returns
We are happy to accept returns of unopened, unexpired products purchased directly from our website within 30 days of purchase. Please note, we DO NOT accept returns of opened or expired products. We also do not accept returns of items purchased from Amazon or other retailers.
Please send your returns using the carrier of your choice to:
Under the Weather Pet (ATTN: Returns)
1360 Marshall Avenue Williston, VT 05495
Please ensure to include your name and order number.
Once your return has been processed, it may take 3 - 10 days for the refund to be posted to your account.
The Many Ways Probiotics Support Your Cat
Prevent HAIRBALLS
Probiotics help prevent hairballs by aiding digestion. They help move hair smoothly through the gut and improve stool consistency, reducing hairball buildup.
CURB OVER-GROOMING
Excessive grooming is often triggered by allergies. A daily probiotic supports gut health and can help reduce itchy skin and over-grooming behaviors.
STRONG IMMUNITY
A strong gut supports a strong immune system. Probiotics promote healthy gut flora, helping cats manage allergies like itching, sneezing, and rubbing resulting in fewer sick days.
HELP DIGESTION
Probiotics help balance gut bacteria for smoother digestion. Smoother digestion helps with firmer, well-formed poops that are easier to scoop—and less smelly.
The Everyday Issues You Didn’t Know a Probiotic Could Fix
Whether it’s stress, sickness, or just day-to-day support—this is one simple step to help your cat feel better from the inside out.
Picky Eating or Vomiting After Meals?
Helps cats with sensitive stomachs or stressful mealtimes.
Frequent Vet Visits or Illness?
Boosts immunity and supports faster, more balanced recovery.
Trying Out a New Food or Diet?
Helps prevent stomach issues during transitions.
Just Finished a Round of Antibiotics?
Rebuilds gut flora and supports post-med recovery.
Want to Keep Them Feeling Great Every Day?
One scoop a day supports digestion, immunity, and energy.
Upcoming Travel or Boarding?
Eases stress and prevents digestive upset from routine changes.
What Cat Parents Like You Are Saying
The results are in! Fewer hairballs, better poops, happier cats.
The Science Behind Every Ingredient in the Jar
Every ingredient, explained.
Why Choose Probiotic Powder for Cats from Under the Weather Over Others?
See how we stack up against other cat probiotics brands.
Other Powders
Often contain low CFU counts and inactive strains
Filled with artificial additives, corn, flavors, colors
Offer only short-term relief, ignoring immune health
Low-quality sourcing and manufacturing
VS
Probiotic Powder for Cats
Daily 1 billion CFU for balanced gut health.
Corn-free, dye-free, with tasty chicken liver flavor.
Supports digestion, appetite, and immune health naturally.
Vet-formulated, USA-made, with fast, free shipping.
Got questions? We have answers!
Curious about our products? We're here to provide clear, expert answers for all your questions!"
What are the benefits of Under the Weather Probiotic Powder for Cats?
This powder maintains gut flora, aids digestion, and strengthens your cat’s immune system
How do I give this probiotic powder to my cat?
Mix the recommended amount of the powder into your cat's food at appropriate dosing according to weight
Does this product have any flavor or odor?
The powder doesn't have any flavor or odor; thus, you can mix it into your cat's food without affecting either the taste or the texture.
How long does it take to see results?
Results may vary, but for many, their cat's digestion improves in just a few days to a week with regular use.
Does this probiotic powder have any type of artificial additive?
No, Under the Weather Probiotic Powder contains no artificial coloring, flavoring, or preservatives.
Is this product suitable for kittens?
Yes, all felines, whatever stage in life they may be at, can be given probiotic powder, even kittens.
