✓Reviewed by Ann Pruitt, InfoHorse.com·Updated May 2026
OS-MO-FLO for Dogs and Cats digestive flow supplement bottle by Horse Sense Solutions
OS-MO-FLO for Dogs and Cats by Horse Sense Solutions. OS-MO-FLO for dogs and cats help restore your pets to normal bowel movement, safely, naturally, effectively!
Who Are The People At Horse Sense Solutions?
Horse owners and pet owners! Every staff member at Horse Sense Solutions has been involved with dogs, cats and horses on a personal level for years, they just go together. The staff knows first-hand of that the Digestive Issues present a serious threat to the health of horses, dogs and cats — and they have formed a revolutionary product line which assists with the normal flow of digestion. Often, horses may have digestion difficulties by simple acts of severe weather change, change in their routine or an abrupt change in feed source--many times dogs and cats will experience the same.
Our products provide a common sense approach to keeping the digestive tract flow moving appropriately. These products need to be readily available on your shelf. Very simple to use. Available in paste form and also in liquid form with oral dosing syringe.
Our “Horse Sense” Is… Well… Common Sense— Even For Dogs and Cats Too!
If you see signs of digestive flow not appropriately taking place, it may be as simple as your dog refusing to eat. Horse Sense Solutions has different products for different needs. It's what you do first. Our product is unique to any product on the market, by the “response" in maintaining the normal flow. Keep products readily available on your shelf. Our products DO NOT contain probiotics. We also make a special formulation for horses— along with our Dog and Cat formula.
Is Your Dog Experiencing Hard or Too Loose Stools? So What Can You Do To Help?
We’ve all seen it… dogs and cats straining to go— or, miserable with watery stools. It is a terrible sight and one that leaves owners worried and your pets feeling miserable. If you see signs of digestive flow becoming slow and not appropriately taking place - it may be as simple as your dog refusing feed. This is a common sense approach to keeping digestive tract moving appropriately. This unique formula promotes normal digestive “Flow" to assist with Normal Bowel Movements. This promotes the normal flow of digestion and elimination of retained stool. May be given to dogs and cats of any age, size or weight— even safe for pregnancy! Promotes Normal Bowel Movements. OS-MO-FLOfor Dog and Cats is packaged in ready-to-use, liquid form with oral dose syringes; multi dose bottle.
What Temperature Do I Need To Store OS-MO-FLO?
Best stored at Room Temperature 70 degrees. Although, high temperatures do not affect integrity of products. If accidentally freezes just thaw out and use will not affect the products. Temperature does not affect product. May keep in feed room or in trailer.
How Should OS-MO-FLO Be Administered?
All products designed for easy application. Just lift your horse's or pet's head upward; with the included open end syringe (like a wormer) squeeze in the mouth and watch them swallow. Has a sweet taste! That's all there is to it! All Feeding Directions are located on labels. Oral dosing syringe is included in canister with all of our Liquid Formulas.
What Do Dog and Cat Owners Have To Say?
My little Chihuahua had watery stools with a foul odor that just wasn't normal. Reba at Horse Sense Solutions sent me a bottle of OS-MO-FLO for dogs and cats. After just ONE dose- my little 2 year old Chihuahua had normal stools with no unusual odor. I was thrilled. Super easy to use-- even for fussy Chihuahuas! He has been back to normal now for 2 months. I am thrilled! ~ Ann Pruitt-- InfoHorse.com
Order OS-MO-FLO Today. It Could Make A Real Difference To Your Dog or Cat's Life Tomorrow… OS-MO-FLO has been called a “miracle” by customers who had constipated and watery stool pets- and then have seen normal digestive flow restored. Make sure to have it in your home available for the unexpected. At only $34.95 for multi doses. [Reba] It is the most affordable, and often the most effective thing that can be done for dogs and cats suffering with proper digestive flow. You’ll never regret having it. The 5 year shelf life makes it a truly worthwhile investment— Call and order today! Be sure to take with you on trips so that you can be prepared! OS-MO-FLO for Dogs and Cats digestive flow supplement bottle by Horse Sense Solutions
What exactly is OS-MO-FLO for Dogs & Cats?
OS-MO-FLO™ is a liquid digestive-support formula from Horse Sense Solutions, sold in a 4 fl. oz. / 120 ml bottle (SKU 3315W) for $34.95 and packaged with an oral dosing syringe. The label promise is direct: it "promotes normal digestive flow in Dogs and Cats to assist with Normal Bowel Movements." It carries a five-year shelf life and is the companion-animal member of the same "keep things flowing" family that includes the equine product SayWhoa!
OS-MO-FLO for Dogs and Cats 4 fl oz product with oral dosing syringe
Who makes OS-MO-FLO?
OS-MO-FLO is made by Horse Sense Solutions, whose own description opens: "Who Are The People At Horse Sense Solutions? Horse owners and pet owners!" The company is BBB-accredited with an A+ rating and operates under the tagline "The natural way to keep things flowing." Reach them at or, by, or by mail at PO Box 3848, Breckenridge, Colorado 80424; the product label also lists Weatherford, Texas and "Made IN USA."
OS-MO-FLO for Dogs and Cats label showing ingredients, dosing directions and guaranteed analysis
What is actually in the bottle?
The OS-MO-FLO label lists its ingredients verbatim as: Purified Water, Sorbitol, Calcium Chloride, Calcium Phosphate, Magnesium Chloride, Potassium Chloride, and Vit D-3 (derived from lanolin). The Guaranteed Analysis shows Calcium (minimum 0.8%, maximum 1.2%), Magnesium 0.5%, Phosphorus (minimum 0.5%), Potassium (min 0.04% / 520 ppm, max 0.08% / 535 ppm), Sodium (minimum 0.005%, maximum 0.015%), and Vit D-3 (minimum 0.007% / 1000 IU). Notably, Horse Sense Solutions states its formulas "DO NOT contain probiotics."
How OS-MO-FLO works and how you give it
The formula uses an osmotic approach: ingredients like sorbitol and balanced electrolyte salts draw and hold fluid through the digestive tract to encourage normal, comfortable flow rather than relying on probiotics or stimulants. To administer, the label directs you to "Shake bottle, pour in cup, using syringe, draw back. Place doser on side of mouth with head tilted slightly upward, squeeze in mouth." Dosing is weight-based: for pets under 5 lbs use 5 ml, and for pets over 6 lbs use 1 ml per pound of body weight, not to exceed 30 ml per dose.
Which pets is it made for?
OS-MO-FLO is labeled "For Dogs & Cats Only," for animals over 3 months of age, of any size or weight, and it is noted as suitable for lactating or pregnant animals. The product is positioned for the digestive irregularities that crop up with changes in weather, routine, or feed source, helping maintain "a healthy gastric system and support normal digestive flow." It is the at-home companion-animal counterpart to the brand's horse line.
Where and how to buy it
OS-MO-FLO is available directly from Horse Sense Solutions at horsesensesolutions.com for $34.95 per 4 fl. oz. / 120 ml bottle, oral syringe included. The product is manufactured in the USA in an ISO 9001 and ISO 13485 registered facility, in compliance with "21 CFR 820 and cGMP Current Good Manufacturing Practices." Questions and orders go through or.
Follow OS-MO-FLO for Dogs and Cats by Horse Sense Solutions.
ⓘThe Solution Section (FAQ)
What is OS-MO-FLO for Dogs and Cats?
Per Horse Sense Solutions: OS-MO-FLO for Dogs and Cats is a digestive product designed to help restore your pets to normal bowel movement — described by the company as safe, natural, and effective. Per the company: it promotes the normal flow of digestion and elimination of retained stool, and is packaged in ready-to-use liquid form with oral dose syringes in a multi-dose bottle.
Who are the people at Horse Sense Solutions?
Per Horse Sense Solutions: horse owners and pet owners. Per the company: "Every staff member at Horse Sense Solutions has been involved with dogs, cats and horses on a personal level for years — they just go together."
Per the company: the staff knows first-hand that digestive issues present a serious threat to the health of horses, dogs, and cats. They formed a product line which assists with the normal flow of digestion. Available in paste form and in liquid form with oral dosing syringe.
When should I consider OS-MO-FLO for my dog or cat?
Per Horse Sense Solutions: if you see signs of digestive flow not appropriately taking place, it may be as simple as your dog refusing to eat. Per the company, common warning signs:
Straining to go
Watery stools
Refusing feed
Slow digestive flow
Per Horse Sense Solutions: this is a common sense approach to keeping the digestive tract moving appropriately. The unique formula is described as promoting normal bowel movements, and per the company may be given to dogs and cats of any age, size, or weight — even safe for pregnancy.
How is OS-MO-FLO administered?
Per Horse Sense Solutions: all products are designed for easy application. Per the company: "Just lift your horse's or pet's head upward; with the included open end syringe (like a wormer) squeeze in the mouth and watch them swallow. Has a sweet taste!"
Per the company: all feeding directions are located on labels, and the oral dosing syringe is included in the canister with all liquid formulas. Per Horse Sense Solutions: this product does not contain probiotics.
What temperature is OS-MO-FLO stored at — and does it freeze?
Per Horse Sense Solutions: best stored at room temperature, 70 degrees. Per the company:
High temperatures do not affect product integrity
If accidentally frozen, just thaw out and use — will not affect the product
May be kept in feed room or in trailer
The product carries a 5 year shelf life
What do dog and cat owners say about OS-MO-FLO?
Per Horse Sense Solutions (customer testimonial from Ann Pruitt, InfoHorse.com): "My little Chihuahua had watery stools with a foul odor that just wasn't normal. Reba at Horse Sense Solutions sent me a bottle of OS-MO-FLO for dogs and cats. After just ONE dose — my little 2 year old Chihuahua had normal stools with no unusual odor. I was thrilled. Super easy to use — even for fussy Chihuahuas! He has been back to normal now for 2 months. I am thrilled!"
Per the company (Reba's quote): "It is the most affordable, and often the most effective thing that can be done for dogs and cats suffering with proper digestive flow. You'll never regret having it."
What pricing has Horse Sense Solutions quoted, and how do I order?
Per Horse Sense Solutions: $34.95 for multi doses (source-quoted pricing).
Per Horse Sense Solutions: Phone 1-800-448-8180 or 830-372-2211, email info@horsesensesolutions.com, website http://www.horsesensesolutions.com/. Address: P.O. Box 3848, Breckenridge, Colorado 80424. Pricing as quoted is subject to change due to economic factors.
What is OS-MO-FLO for Dogs & Cats?
OS-MO-FLO is a liquid digestive-support product from Horse Sense Solutions that, per its label, "promotes normal digestive flow in Dogs and Cats to assist with Normal Bowel Movements." It comes in a 4 fl. oz. / 120 ml bottle with an oral dosing syringe included. It is the companion-animal version of the brand's "keep things flowing" approach to digestive wellness.
How much does OS-MO-FLO cost?
OS-MO-FLO is priced at $34.95 for the 4 fl. oz. / 120 ml bottle (SKU 3315W) on the Horse Sense Solutions website. The oral dosing syringe is included with the bottle. You can order directly at horsesensesolutions.com or by calling 800-448-8180.
What are the ingredients in OS-MO-FLO?
The label lists the ingredients as Purified Water, Sorbitol, Calcium Chloride, Calcium Phosphate, Magnesium Chloride, Potassium Chloride, and Vit D-3 (derived from lanolin). These are blended into a liquid designed to support normal digestive flow. Horse Sense Solutions notes that its formulas do not contain probiotics.
How do I give OS-MO-FLO to my dog or cat?
The label directs you to shake the bottle, pour into a cup, and draw the dose back into the included syringe. Place the doser on the side of the pet's mouth with the head tilted slightly upward and squeeze it in. The administration is designed to be quick and simple at home.
What is the correct dose by weight?
For pets under 5 lbs, use 5 ml per dose. For pets over 6 lbs, use 1 ml per pound of body weight, not to exceed 30 ml per dose. The product is for animals over 3 months of age, of any size or weight.
Is OS-MO-FLO safe for puppies and kittens?
OS-MO-FLO is labeled for dogs and cats over 3 months of age. The label specifies it is safe for animals of any size or weight, and also notes it can be used in lactating or pregnant animals. For pets younger than 3 months, consult your veterinarian.
Can I use OS-MO-FLO on a pregnant or nursing pet?
Yes. The OS-MO-FLO label explicitly states it is suitable for lactating or pregnant animals, in addition to dogs and cats of any size or weight over 3 months of age. As with any supplement, it's wise to discuss your individual pet's needs with your veterinarian.
How does OS-MO-FLO work?
The formula takes an osmotic approach: ingredients such as sorbitol and balanced electrolyte salts (calcium, magnesium, and potassium compounds) help draw and hold fluid through the digestive tract to encourage normal flow. The label's stated purpose is to "maintain a healthy gastric system and support normal digestive flow." It does this without probiotics.
Does OS-MO-FLO contain probiotics?
No. Horse Sense Solutions states that its products, including the OS-MO-FLO/SayWhoa! family, do not contain probiotics. Instead, the formula relies on an osmotic blend of purified water, sorbitol, and electrolyte minerals to support normal digestive flow.
Who makes OS-MO-FLO?
OS-MO-FLO is made by Horse Sense Solutions, a company of horse and pet owners whose own words describe the staff as "Horse owners and pet owners!" They are a BBB-accredited business with an A+ rating and operate under the tagline "The natural way to keep things flowing."
Where is OS-MO-FLO manufactured?
OS-MO-FLO is manufactured in the USA in an ISO 9001 and ISO 13485 registered facility, in compliance with 21 CFR 820 and cGMP (Current Good Manufacturing Practices). The product label carries a "MADE IN USA" mark and lists Weatherford, Texas.
What is the shelf life of OS-MO-FLO?
OS-MO-FLO has a five-year shelf life. It is best stored at room temperature, but it tolerates high temperatures such as those found in a trailer or feed room, and it thaws safely if it freezes. This makes it convenient to keep on hand.
What conditions or situations is OS-MO-FLO used for?
OS-MO-FLO is intended to help with digestive irregularities and to support normal bowel movements in dogs and cats. Horse Sense Solutions notes these difficulties often arise from changes in weather, routine, or feed source. The goal is to help maintain a healthy gastric system and keep digestion flowing normally.
How do I contact Horse Sense Solutions?
You can reach Horse Sense Solutions by phone at 800-448-8180 or 830-372-2211, by email at info@horsesensesolutions.com, or by mail at PO Box 3848, Breckenridge, Colorado 80424. They are also on Facebook as HorseSenseSolutions.
Is OS-MO-FLO related to the SayWhoa! horse product?
Yes. OS-MO-FLO is the dog-and-cat member of the same Horse Sense Solutions product family that includes the equine products SayWhoa!, HALT!, Haul 'n Go, Eat Up, and Sure Win. They all share the company's "keep things flowing" digestive-support philosophy and the convenient oral-syringe delivery.
How many doses are in one bottle of OS-MO-FLO?
The bottle holds 4 fl. oz. / 120 ml, and the maximum single dose is 30 ml, so a bottle provides at least four maximum-size doses, and many more for smaller pets dosed at 1 ml per pound. A small dog or cat will get a substantial number of servings from one bottle, which adds to its value at $34.95.
What is in the Guaranteed Analysis on the OS-MO-FLO label?
The Guaranteed Analysis lists Calcium (minimum 0.8%, maximum 1.2%), Magnesium 0.5%, Phosphorus (minimum 0.5%), Potassium (min 0.04% / 520 ppm, max 0.08% / 535 ppm), Sodium (minimum 0.005%, maximum 0.015%), and Vit D-3 (minimum 0.007% / 1000 IU). These reflect the electrolyte-mineral balance behind the formula's osmotic digestive support.
Contact OS-MO-FLO for Dogs and Cats by Horse Sense Solutions.
