Is the bacteria guaranteed alivetill expiration date?

I a don't think so. I do know it needs to be stored in a cool dry place. Heat kills it

Would sitting in a hot mailbox kill the probiotics?

If it was HOT my answer is yes. I never get supplements in the summer. Go to your health food store store for some like this.

Does this product need to be refrigerated? What happens when it's in a hot tack room over the summer?

I leave one small jar at a time in my tack room in all temperatures and I have had no problem with this products effectiveness. I then keep refilling that same jar from the larger jar of this product in my house as needed. Leaving it in a tin feed bin as I do keeps it a bit cooler in the summer. I hope this helps. BTW Love this product! It has the ingredient my Vet informed me to make sure is in a probiotic (saccharomyces Cerevisiae).

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HealthyGut™ Probiotics for Horses Dietary Supplement, All-Natural Digestive System Maintenance Formula (30 Days)

Product ID: 35354236

Details

Brand
Equa Holistics
Flavor
Milk
Item Form
Powder
Item Weight
240 g
Product Benefits
Gut Support

🌿All-natural, non-GMO formula

🐴7-day pre-filled oral syringes

🇺🇸Made in USA, human-grade quality

¥9174

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🐎 Elevate your horse’s gut game — because their health deserves the best!

COMPACT CONVENIENT - Travel-friendly size, no bulky containers to manage
7 DAY READY TO USE KIT - Pre-measured syringes for effortless daily dosing
FOAL FIRST GUT DEFENSE - Holistically supports foal microbiome & stress relief
PURE POTENT INGREDIENTS - Non-GMO, human-grade probiotics with mare’s milk
STRESS PROOF YOUR HORSES DIGESTION - Eases digestive upset from antibiotics & environment changes

HealthyGut™ Probiotics for Horses is a 30-day, all-natural digestive supplement designed to promote healthy gut microbiome colonization in foals and adult horses. Featuring a 7-day pre-filled oral syringe starter kit, it delivers human-grade, non-GMO probiotics combined with mare’s milk to support digestion, relieve stress-related gut upset, and maintain hindgut health. Made in the USA with strict quality controls, this compact formula is trusted by equestrian professionals and pet owners alike for effective, convenient digestive care.

Specifications

ASIN	B01KSN8TMO
ASIN	B01KSN8TMO
Best Sellers Rank	#23,453 in Pet Supplies ( See Top 100 in Pet Supplies ) #14 in Horse Probiotics & Digestive Supplements
Brand Name	Equa Holistics
Customer Reviews	4.7 4.7 out of 5 stars (329)
Date First Available	August 22, 2016
Flavor	Milk
Global Trade Identification Number	00862502000311
Item Form	Powder
Item Weight	240 g
Manufacturer	Equa Holistics LLC.
Manufacturer	Equa Holistics LLC.
Manufacturer Part Number	1001
Number of Items	1
Package Dimensions	7.44 x 3.54 x 3.43 inches; 8.47 ounces
Product Benefits	Gut Support,Relief From
Target Species	Horse
Unit Count	8.5 Ounce

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