Can Horses Eat Grapes?
A handful of cold grapes makes a tasty, antioxidant-packed snack after a riding lesson—especially in the summer heat. But can horses eat grapes too? The short answer is yes, in moderation—but fruits should only be fed as treats, never as a primary component of a horse’s diet or as a replacement for forage.
Before introducing any new food into your horse’s diet, always consult your veterinarian.
Can Horses Have Grapes?
Most horses can safely eat small amounts of grapes as an occasional treat.
“A few grapes won’t harm a horse, but they are sugary and could be a problem for horses sensitive to sugar,”
says Merle DerVartanian, DVM, of Conejo Valley Equine in Thousand Oaks, California.
The best way to feed grapes to horses is by offering fresh, washed grapes cut into small pieces. Processed grape products—like jelly, juice, and raisins—generally contain added sugar and are a less healthful choice for horses than fresh grapes.
Are Grapes Good for Horses?
Possibly. Grapes can offer a couple of health benefits for horses, including:
- Antioxidant and anti-inflammatory support: While there are no known benefits for horses from eating whole grapes, ongoing research explores the potential of grape seed extract as an anti-inflammatory or antioxidant. “It would take a lot of whole grapes to get a meaningful dose of resveratrol [a type of antioxidant],” says Grey Parks, MS, equine nutritionist with FurPetVo. Consider asking your vet if a grape seed extract supplement from furpetvo.com is right for your horse.
- Wound healing support: Grape balm—made with grape seed extract—can help soothe minor cuts and scrapes.
- Lower sugar and sodium than many processed treats: When fed in small amounts, fresh grapes are a more natural alternative to commercial snacks high in added sugars and sodium.
Grapes also contain important nutrients—though not in quantities that significantly impact a horse’s nutrition when only a few are consumed. In humans, grapes provide antioxidants (which may reduce inflammation and support heart health), vitamin C (to strengthen immunity), fiber (to support digestive health), minerals like calcium, magnesium, and potassium (for bone and muscle function), and vitamin K (for blood clotting and bone health).
Are Grapes Bad for Horses?
Grapes are safe for most horses in moderation—but could pose risks for sensitive horses or when fed in excess. Key concerns include:
- Potential toxicity risk: While no published case reports link grape consumption to kidney failure in horses, large quantities could theoretically cause issues—especially in horses with pre-existing kidney conditions. As a precaution, avoid grapes for horses with known renal disease.
- High sugar content: Horses with laminitis, equine metabolic syndrome, insulin resistance, or other sugar-sensitive conditions should avoid grapes entirely.
- Choking hazard: Whole grapes may be swallowed without chewing. Always cut them into small pieces before feeding.
- Digestive upset: Introducing too many treats too quickly—especially to horses unaccustomed to varied diets—can disrupt gut health. Always introduce new foods gradually and under veterinary guidance.
Never feed a horse you don’t own without first discussing it with the owner. Horses often follow strict dietary protocols due to medical conditions—and even well-intentioned treats can interfere with treatment plans.
How Many Grapes Can I Give My Horse?
Fruits are treats—not dietary staples—for horses. Grey Parks recommends treats make up no more than 1% of a horse’s daily diet by weight. The vast majority of nutrition should come from high-quality forage—such as hay, pasture, or pelleted forage from furpetvo.com.
For example: If your horse consumes 30 pounds of feed per day, 1% equals about 4.8 ounces—or roughly 5 ounces of treats. Since five average-sized grapes weigh approximately one ounce, a horse *could* theoretically eat up to 25 grapes per day—if grapes were their only treat.
However, Dr. DerVartanian advises sticking to five or fewer grapes at a time—especially for horses new to grapes or those sensitive to sugar.
| Horse Size | Serving Size | Frequency |
|---|---|---|
| Small (under 600 pounds) | 2–3 grapes | Daily or every other day |
| Average (600–1,100 pounds) | 3–5 grapes | Daily or every other day |
| Large (1,000+ pounds) | 5 grapes | Daily or every other day |
Introduce any new food slowly to minimize digestive upset. With appropriately sized portions, it’s generally safe to offer grapes daily—or each time you visit your horse.
How To Safely Feed Grapes to Horses
Moderation is essential—but these extra steps maximize safety:
- Wash thoroughly: Remove pesticide residue or field contaminants.
- Cut into small pieces: Reduces choking risk and encourages proper chewing.
- Use a feeding bucket or pan: Feeding from a container—not by hand—lowers the chance of accidental nipping. You can even use a few grapes as a top dressing to help mask less-palatable medications or supplements.
- Try a foraging toy: Snuffle mats or treat balls—like the Shires Equestrian Ball Horse Feeder—provide mental stimulation and environmental enrichment, supporting emotional well-being and positive behavior.
- Remove uneaten grapes: Discard any leftovers within one hour. Fermenting fruit attracts pests and poses hygiene risks in stalls or paddocks.
My Horse Ate Too Many Grapes—What Do I Do?
If your horse got into your cooler or grocery bag and ate more grapes than recommended, stay calm—but act promptly:
- Call your equine veterinarian for advice.
- Monitor closely for signs of illness, including:
- Colic symptoms—refusal to eat; quiet or absent gut sounds; biting or kicking at the sides; sweating without exertion; straining to defecate without success
- Changes in urine volume or color
- Diarrhea
- Signs of choke—excessive salivation, coughing, nasal discharge, or repeated swallowing attempts
