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How GastroElm Plus Works

GastroElm Plus is a natural digestive support supplement for dogs, cats, and horses made from four carefully selected herbs:

  • Slippery elm inner bark

  • Marshmallow root

  • Milk thistle seed

  • Dandelion root

When GastroElm Plus comes in contact with water, the slippery elm and marshmallow root create a soothing gel-like material rich in natural mucilage. This helps support the protective lining of the digestive tract, normal digestive comfort, healthy stool quality, appetite, and overall digestive function.

Milk thistle seed and dandelion root provide complementary support for normal liver function, digestion, and bile flow.

GastroElm Plus can be mixed into a gel for dogs and cats, top dressed onto feed for horses, or mixed with water or aloe juice and administered as a slurry.

For more than a decade, pet owners, horse owners, trainers, breeders, rescues, and veterinarians have incorporated GastroElm Plus into digestive wellness programs for animals experiencing occasional digestive sensitivity, stress, travel, dietary changes, illness recovery, and recurring digestive discomfort.

The Four Herbs in GastroElm Plus

Slippery Elm Inner Bark

Slippery elm inner bark is the primary ingredient in GastroElm Plus.

It naturally contains mucilage, a plant compound that absorbs water and develops a smooth, gel-like consistency. When mixed with water, this mucilage helps coat and soothe the digestive tract while supporting the natural protective lining of the stomach and intestines.

Slippery elm is commonly used to support:

  • Gastric comfort

  • Normal digestive function

  • Healthy stool consistency

  • Appetite

  • Digestive comfort during stress

  • The natural protective lining of the digestive tract

GastroElm Plus uses 100% Appalachian wild-crafted slippery elm inner bark.

Only the inner bark is used because this is the portion of the plant traditionally valued for its mucilage content and digestive-supporting properties.

Marshmallow Root

Marshmallow root is another naturally mucilage-rich herb.

It works alongside slippery elm to help maintain moisture, comfort, and normal function throughout the digestive tract. Its inclusion gives GastroElm Plus broader mucilage support than products that contain slippery elm alone.

Marshmallow root may help support:

  • The natural mucosal lining of the digestive tract

  • Gastric and intestinal comfort

  • Normal stool quality

  • Digestive comfort during dietary changes

  • Overall gastrointestinal wellness

The slippery elm and marshmallow root in GastroElm Plus complement one another by creating the gel-like texture that develops when the product is mixed with water.

Milk Thistle Seed

Milk thistle seed has a long history of traditional use for supporting normal liver function and antioxidant activity.

The liver plays an important role in digestion, metabolism, detoxification, and the processing of nutrients. Supporting normal liver function is therefore an important part of supporting overall digestive health.

Milk thistle seed is included in GastroElm Plus to help support:

  • Normal liver function

  • Antioxidant activity

  • Healthy metabolic function

  • Digestive wellness

  • Animals recovering from periods of stress, medication use, or poor nutrition

GastroElm Plus uses whole milk thistle seed as part of its four-herb formula.

Dandelion Root

Dandelion root has traditionally been used to support digestion, appetite, normal bile flow, and liver function.

It complements milk thistle by supporting the digestive and hepatobiliary systems while also contributing to the overall four-herb formula.

Dandelion root may help support:

  • Normal appetite

  • Digestion

  • Bile production and flow

  • Normal liver function

  • Nutrient utilization

  • Overall digestive wellness

A one-tablespoon serving of GastroElm Plus contains approximately 500 mg of dandelion root.

How the Formula Works Together

GastroElm Plus was designed as more than a single-ingredient slippery elm product.

The four herbs provide complementary support:

  • Slippery elm inner bark supplies natural mucilage that helps coat and soothe the digestive tract.

  • Marshmallow root provides additional mucilage and supports the natural mucosal lining.

  • Milk thistle seed supports normal liver function and antioxidant activity.

  • Dandelion root supports digestion, appetite, bile flow, and liver function.

Together, these ingredients support both the digestive tract and the organs involved in digestion.

The formula is intended to help support:

  • Gastric comfort

  • Normal digestive function

  • Healthy stool quality

  • Appetite

  • Normal gut function

  • Digestive comfort during stress

  • Liver support

  • Long-term digestive wellness

Why GastroElm Plus Forms a Gel

When GastroElm Plus is mixed with water, the slippery elm inner bark and marshmallow root absorb moisture and form a gel-like slurry.

This occurs because both herbs naturally contain mucilage.

Mucilage is a water-soluble plant material that becomes smooth and slippery when hydrated. The resulting gel helps create a soothing consistency that can coat the digestive tract before food is introduced.

For dogs and cats, many owners give the prepared gel approximately 10–15 minutes before meals.

Some owners report that animals experiencing morning digestive discomfort or reluctance to eat become more willing to eat after receiving GastroElm Plus.

For horses, the product is often used dry because horses consume much larger amounts of water throughout the day. It may also be mixed with water or aloe juice when a slurry is preferred.

GastroElm Plus for Dogs

Dogs can experience digestive sensitivity for many reasons, including:

  • Dietary changes

  • Food intolerance

  • Stress

  • Travel

  • Aging

  • Medication use

  • Antibiotic use

  • Changes in the gut microbiome

  • Pancreatic or intestinal sensitivity

  • Chronic digestive conditions

GastroElm Plus is commonly used as part of a digestive wellness program for dogs experiencing:

  • Sensitive stomachs

  • Occasional loose stool

  • Digestive discomfort

  • Acid-related stomach discomfort

  • Regurgitation

  • Morning appetite reluctance

  • Changes in stool quality

  • Digestive upset following antibiotics

  • Stress-related digestive symptoms

  • Recovery from illness

  • Long-term digestive sensitivity

Owners of dogs with pancreatitis, inflammatory bowel conditions, reflux, megaesophagus, liver concerns, or other chronic digestive problems often use GastroElm Plus as supportive nutrition alongside veterinary care.

GastroElm Plus is not a replacement for diagnosis, medication, prescription diets, or veterinary treatment. It is intended to support digestive comfort and normal digestive function as part of a broader wellness plan.

GastroElm Plus for Cats

Cats can be particularly sensitive to changes in diet, stress, medications, hairballs, and changes in routine.

GastroElm Plus is used by cat owners seeking support for:

  • Sensitive stomachs

  • Occasional vomiting

  • Hairball-related digestive irritation

  • Loose stool

  • Appetite changes

  • Digestive discomfort

  • Recovery from medication or illness

  • Senior digestive health

  • Liver support

  • Overall gastrointestinal wellness

Cats can be selective about taste and texture, so GastroElm Plus may be introduced gradually.

Some cat owners mix a small amount of gel into wet food. Others sprinkle a carefully measured amount of dry powder into food.

Persistent vomiting, weight loss, refusal to eat, diarrhea, dehydration, or behavioral changes should always be evaluated by a veterinarian.

GastroElm Plus for Horses

Horse owners are some of the most consistent users of GastroElm Plus.

Horses are particularly vulnerable to digestive stress because of their anatomy, continuous stomach-acid production, feeding patterns, travel schedules, training demands, and sensitivity to changes in routine.

GastroElm Plus is commonly incorporated into equine digestive wellness programs during:

  • Training

  • Hauling

  • Horse shows

  • Competition season

  • Stall confinement

  • Feed changes

  • Travel

  • Rehabilitation

  • Changes in environment

  • Periods of increased stress

Horse owners use GastroElm Plus to support:

  • Gastric comfort

  • Normal gut function

  • Appetite

  • Healthy manure consistency

  • Calm, comfortable behavior

  • Normal rideability

  • Digestive wellness during hauling

  • Digestive support during show season

  • Recovery from stressful environments

  • Long-term digestive maintenance

Show Horses, Hauling and Competition Stress

Show season places additional demands on a horse’s digestive system.

Common stressors include:

  • Trailering

  • Unfamiliar environments

  • Reduced turnout

  • Changes in water

  • Changes in feeding schedules

  • Long periods without forage

  • Increased training intensity

  • Competition anxiety

  • Overnight stabling

  • Separation from familiar horses

These changes may contribute to digestive discomfort, appetite changes, loose manure, behavioral changes, cinchy behavior, or reduced rideability.

Many horse owners begin GastroElm Plus before hauling and continue using it throughout the competition season.

For maintenance, the dry powder is commonly top dressed onto the evening feed. During periods of greater digestive stress, owners may divide the serving across multiple feedings or prepare a slurry.

GastroElm Plus contains no calming agents, stimulants, or complicated proprietary blends.

It has been used by customers during USEF-governed show seasons. Competition rules can change, however, and each rider is responsible for confirming the current rules of USEF, FEI, or any other governing organization before using a supplement at a regulated event.

Cinchy Behavior, Demeanor and Rideability

Digestive discomfort does not always first appear as an obvious digestive symptom.

In some horses, it may show up as a change in behavior or performance.

Horse owners may notice:

  • Cinchy or girthy behavior

  • Ear pinning during saddling

  • Resentment when the girth is tightened

  • Irritability under saddle

  • Resistance to forward movement

  • Difficulty bending

  • Increased reactivity

  • Changes in attitude

  • Reduced willingness to work

  • A horse that simply seems uncomfortable

Many GastroElm Plus customers report that their horses become more comfortable during tacking, calmer in demeanor, and easier to ride as digestive comfort improves.

Behavioral and rideability problems can also result from pain, lameness, saddle fit, dental problems, reproductive issues, or other medical conditions. Sudden or significant changes should be evaluated by a veterinarian or qualified equine professional.

Hot Horses and Off-Track Thoroughbreds

Hotter and more sensitive horses may be especially susceptible to digestive stress.

Thoroughbreds and off-track Thoroughbreds often transition through substantial changes in:

  • Diet

  • Housing

  • Training

  • Turnout

  • Feeding schedules

  • Social environment

  • Workload

  • Travel

These horses may be high-strung, sensitive, difficult keepers, or prone to stress-related digestive discomfort.

Many owners of Thoroughbreds and off-track Thoroughbreds use GastroElm Plus daily to support:

  • Gastric comfort

  • Appetite

  • Healthy digestion

  • Normal manure

  • Weight-maintenance programs

  • Digestive wellness during retraining

  • Calm, comfortable behavior

GastroElm Plus can be top dressed onto feed, divided across meals, or mixed into a slurry when more direct administration is desired.

Geldings and Digestive Sensitivity

Over the years, many GastroElm Plus customers have reported digestive sensitivity, high-strung behavior, cinchy behavior, loose manure, appetite changes, or irritability in geldings.

Every horse is different, and geldings are not universally more prone to digestive concerns than mares. However, many gelding owners use GastroElm Plus because digestive discomfort can contribute to changes in attitude, demeanor, and rideability.

A gelding experiencing digestive discomfort may become:

  • More reactive

  • Cinchy

  • Resistant during tacking

  • Irritable under saddle

  • Nervous during hauling

  • Less willing to work

  • More sensitive during feed or schedule changes

GastroElm Plus is commonly used as part of a daily digestive wellness routine for geldings during training, travel, competition, dietary changes, and other stressful periods.

Rescue Horses and Horses From Kill Pens

Rescue horses and horses coming from kill pens may face multiple challenges at once:

  • Stress

  • Poor body condition

  • Irregular feeding

  • Dehydration

  • Parasite burden

  • Dental neglect

  • Sudden diet changes

  • Digestive sensitivity

  • Lack of consistent care

A safe rehabilitation program should involve veterinary care, dental evaluation, parasite management, gradual nutritional rebuilding, clean water, forage, and careful monitoring.

Many rescues and individual owners use GastroElm Plus as an affordable part of a broader rehabilitation plan.

It may help support:

  • Digestive comfort

  • Appetite

  • Normal stool quality

  • Adaptation to dietary changes

  • Gastric wellness

  • Overall digestive function

GastroElm Plus is not a substitute for veterinary treatment, but it can be a practical addition to a carefully managed recovery program.

Digestive Support for Pancreatitis, IBS, Reflux and Liver Concerns

GastroElm Plus is frequently used by owners of animals with diagnosed digestive conditions.

These may include:

  • Pancreatitis

  • Inflammatory bowel conditions

  • Irritable bowel symptoms

  • Acid reflux

  • Regurgitation

  • Megaesophagus

  • Chronic loose stool

  • Liver concerns

  • Digestive discomfort during medication use

  • Appetite loss associated with digestive upset

In these situations, GastroElm Plus should be viewed as supportive nutrition rather than a treatment.

The mucilage-rich herbs may help support digestive comfort and the natural protective lining of the gastrointestinal tract. Milk thistle seed and dandelion root provide complementary support for normal liver and digestive function.

Animals with serious or chronic conditions should remain under veterinary care.

Equine Ulcer and Colic Support Language

Horse owners commonly use GastroElm Plus as part of programs intended to support gastric comfort and normal digestive function in horses with a history of digestive sensitivity.

The product is frequently used:

  • During hauling

  • During competition

  • During stall rest

  • During feed changes

  • During stressful weather

  • During medication use

  • When appetite changes

  • When cinchy behavior appears

  • When manure consistency changes

  • As part of long-term digestive maintenance

GastroElm Plus is not a substitute for veterinary diagnosis or treatment of ulcers or colic.

Colic symptoms can be life-threatening and require immediate veterinary attention.

Owners may use GastroElm Plus alongside veterinary recommendations as part of a broader plan to support gastric comfort, hydration, forage intake, normal gut function, and digestive wellness.

Directions for Dogs and Cats

Gel or Slurry Method

Mix:

1 tablespoon of GastroElm Plus powder with 4 ounces of water or bone broth.

Stir well and allow the mixture to form a gel.

Give:

1/2 ml of prepared gel per pound of body weight per dose.

The gel is commonly given before breakfast and at bedtime.

Example:

A 20-pound pet receives approximately 10 ml per dose.

Many owners administer the gel approximately 10–15 minutes before meals.

The prepared gel can also be mixed into food.

Store mixed gel in the refrigerator for up to 7 days. Do not heat or freeze the gel.

Dry-Powder Method

If a dog or cat will not eat the gel or accept it by syringe, the dry powder may be added directly to meals.

A general guideline is:

1/4 teaspoon of dry powder per day for each 10 pounds of body weight.

The daily amount may be divided between meals.

The gel method is often preferred when owners want the soothing mixture administered before food, while the dry-powder method is convenient for maintenance and animals that resist syringing.

Directions for Horses

Maintenance

Top dress the evening feed with:

1 tablespoon of dry powder once daily.

Additional Digestive Support

Give:

1 tablespoon of dry powder 2–3 times daily, added to feed.

GastroElm Plus may also be mixed with water or aloe juice and administered by oral syringe.

Many owners use the dry powder because horses naturally consume large quantities of water throughout the day.

Serving schedules may be adjusted in consultation with a veterinarian based on the horse’s size, diet, workload, condition, and level of digestive stress.

Can GastroElm Plus Be Used Long Term?

Many customers use GastroElm Plus daily for months or years.

The formula contains only four herbs:

  • Slippery elm inner bark

  • Marshmallow root

  • Milk thistle seed

  • Dandelion root

It contains no artificial flavors, colors, preservatives, or fillers.

Long-term use is common among owners of:

  • Senior animals

  • Animals with recurring digestive sensitivity

  • Competition horses

  • Off-track Thoroughbreds

  • Rescue horses

  • Dogs with sensitive stomachs

  • Animals experiencing ongoing dietary or environmental stress

Every animal is different. Owners should consult their veterinarian regarding long-term use in animals with serious medical conditions, pregnancy, medication use, or specialized dietary needs.

Use With Medications and Other Supplements

Many customers use GastroElm Plus alongside:

  • Prescription medications

  • Probiotics

  • Digestive enzymes

  • Special diets

  • Aloe juice

  • Joint supplements

  • Vitamins and minerals

  • Other nutritional support products

Because GastroElm Plus contains mucilage-rich herbs, some owners prefer to give medications separately as a matter of routine.

Consult your veterinarian regarding the timing of specific medications.

GastroElm Plus should not be used to replace medication or veterinary treatment without professional guidance.

Ingredient Quality and Sourcing

Ingredient quality is a major focus of GastroElm Plus.

We use:

  • 100% Appalachian wild-crafted slippery elm inner bark

  • Human-grade marshmallow root

  • Human-grade milk thistle seed

  • Human-grade dandelion root

Our supporting herbs are sourced from carefully selected suppliers in Albania, Croatia, and Poland.

We do not source the herbs in GastroElm Plus from China.

Certificates of Analysis are received and reviewed for incoming ingredients before they are approved for use in our products.

This process helps us evaluate:

  • Ingredient identity

  • Purity

  • Consistency

  • Quality

  • Suitability for production

GastroElm Plus is manufactured in the United States.

It is not produced alongside a wide variety of other animal supplements, helping reduce cross-contamination concerns.

What Makes GastroElm Plus Different?

Many slippery elm products contain only one ingredient.

GastroElm Plus combines four complementary herbs in one formula.

Important differences include:

  • Appalachian wild-crafted slippery elm inner bark

  • Human-grade supporting herbs

  • Four-herb digestive and liver-support formula

  • No herbs sourced from China

  • COAs reviewed for incoming ingredients

  • No artificial flavors, colors, preservatives, or fillers

  • Suitable for dogs, cats, and horses

  • Flexible administration

  • Manufactured in the United States

  • More than a decade of customer use

  • Popular with horse owners, trainers, breeders, rescues, and multi-pet households

GastroElm Plus was developed to provide broader digestive support than slippery elm alone.

Storage Instructions

Close the bag securely after each use.

Store the dry powder hygienically in a cool environment protected from light.

Prepared gel may be stored in the refrigerator for up to 7 days.

Do not heat or freeze the prepared gel.

Cautions

GastroElm Plus is intended for animal use only.

Safe use in pregnant animals or animals intended for breeding has not been proven.

If your animal’s condition worsens or does not improve, discontinue use and consult your veterinarian.

Seek veterinary care promptly if your animal experiences:

  • Severe or persistent vomiting

  • Blood in the stool

  • Significant weight loss

  • Dehydration

  • Persistent appetite loss

  • Severe abdominal pain

  • Colic symptoms

  • Repeated regurgitation

  • Sudden behavioral changes

  • Signs of distress

  • Worsening symptoms

GastroElm Plus is not intended to diagnose, treat, cure, or prevent disease.

It is a natural digestive support supplement intended to support digestive comfort, gastric wellness, normal digestive function, healthy stool quality, appetite, liver function, and overall gastrointestinal health.

Choose the Right GastroElm Plus Product

GastroElm Plus is available in multiple sizes and multipacks.

Small Bag for $31.98

A practical choice for:

  • First-time customers

  • Cats

  • Small dogs

  • Short-term use

  • Trial use

Shop the GastroElm Plus Small Bag

Big Bag for $45.98

The best-value choice for many regular users.

A good fit for:

  • Medium and large dogs

  • Multi-pet households

  • Long-term use

  • Horse owners who want to try the product

Shop the GastroElm Plus Big Bag

Twin Pack for $84.98

A convenient option for:

  • Repeat customers who want to save money

  • Multi-pet homes

  • Horse owners

  • Customers who do not want to reorder frequently

  • Only $42.49 per bag and Free Shipping 

Shop the GastroElm Plus Twin Pack

Four Pack for $159.98

A practical choice for:

  • Barns

  • Breeders

  • Rescues

  • Trainers

  • Multi-horse households

  • High-volume users

  • Only $39.99 per bag and Free Shipping

Shop the GastroElm Plus Four Pack

Eight Pack for $299.98

The best option for:

  • Larger barns

  • Professional trainers

  • Rescues

  • Kennels

  • Breeding operations

  • High-volume customers

  • $37.49 per bag and Free Shipping

Shop the GastroElm Plus Eight Pack

Bulk Options for Stables & Boarding Barns

10lb Bulk Bag - $379.98 - Equal to 11.2 big bags at $33.92 per bag and Free Shipping.

12 Pack - $439.98 - $36.67 per bag and Free Shipping

Frequently Asked Questions

For answers about ingredients, dosing, dogs, cats, horses, show season, hauling, safety, storage, sourcing, and product selection, visit our complete GastroElm Plus FAQ page.

Read the GastroElm Plus FAQ

Supporting Better Digestive Health

Healthy digestion affects far more than stool quality.

Digestive comfort can influence:

  • Appetite

  • Energy

  • Mood

  • Behavior

  • Rideability

  • Nutrient absorption

  • Weight maintenance

  • Recovery

  • Performance

  • Overall quality of life

GastroElm Plus provides a simple way to support digestive and liver health using four carefully sourced herbs.

Whether you are caring for a dog with a sensitive stomach, a cat needing gentle digestive support, a show horse under increased stress, an off-track Thoroughbred adjusting to a new life, or a rescue horse beginning rehabilitation, GastroElm Plus can become a practical part of a long-term digestive wellness program.