Glyphosate (RoundUp) and Horses; What You Need To Know

Glyphosate intolerance is a common problem among people and pets today. We’ve all heard, “Is it the wheat or the Glyphosate?”. In most cases, Glyphosate is the culprit when it comes to food allergies. As an example, many who cannot properly digest conventional wheat, can easily digest organic wheat. Why is this? And how does this information pertain to our horses?

Glyphosate, the main ingredient in RoundUp, is a recognized carcinogen, can disrupt a normal pH, is a chelator (strips critical vitamins & minerals), can cause leaky gut (especially in the case of GMO’s, which are heavily contaminated with Glyphosate as they’re designed to blow up the intestinal tract of bugs, instantly killing them. It can do the same to us and our pets, just in a slower process.. IBS, IBD, Crohn’s, Lymphangectasia, etc). Glyphosate can perforate the gut wall negatively impacting nutrient absorption and creating inflammation, allowing rogue molecules to spread systemically, destroying the integrity of the blood brain barrier and paving the way for neurological issues. It also replaces critical amino acid glycine with itself, severely interrupting protein synthesis and creating a long list of health conditions and diseases.

Dr. Stephanie Seneff, Senior Research Scientist with MIT, has done extensive research on Glyphosate and has presentations available on YouTube if you’re interested in learning more.. which we highly recommend!

It’s not listed as an ingredient in food/feed, grains or supplements, but it is found in GMO’s, conventional crops (i.e., wheat) and vaccines. So we need to become increasingly aware of where it lurks, be well versed in GMO crops and crops that are commonly sprayed with Glyphosate. Glyphosate seems to be everywhere these days, which is part of why we are so passionate about sourcing certified organic foods in efforts to avoid it.

Glyphosate is the most widely used herbicide in the world. It is commonly used on: hay, oats, rice, wheat, barley, corn, beet pulp, soybeans, alfalfa, peas, carrots, sunflower seeds, peppermint, wild rice, mustard, pumpkins, squash, rye, flax, chickpeas, beans, molasses, sweet potatoes, canola, hops, and sugarcane.

How many of you recognize these crops from your horses feed bag or supplement ingredient list? You can call the manufacturer and ask if the product is GMO-free or tested for Glyphosate residue, but if there isn’t a seal for non-GMO, USDA organic certification or organic ingredients called out in the product facts, odds are these ingredients are GMO and/or Glyphosate laden. Unless it’s organic, there’s a chance Glyphosate was used on that crop.


It’s important for us as our horses’ advocates to be on the look out for Glyphosate in order to best protect their health. It can be a very long and expensive process to restore the gut and immune system once it’s been compromised, so being proactive is key! Once consumer demand is high enough for non-GMO and organic and we all vote with our dollars (don’t purchase products containing GMO’s/Glyphosate contamination), then we’ll see a change in the pet food industry offering safer feed and supplements for our equines and other pets.