Every horse owner deserves to get what they pay for.


With so many drugs being offered online and at events, the equine marketplace can be overwhelming. We’re making it our mission to help.

Here, you can discover the difference between a product that is not FDA-approved and a product that is. You can learn what the approval means to your horse. And, if you’re surprised to find out you’ve been misled, you can even find a way to help make sure others aren’t. It’s time to set the record straight. It’s time to really know what you’re giving your horse, and start getting what you are paying for.

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  • Merial Limited, Duluth, GA. All rights reserved. EQUIUGD1225 (6/12)

What does
mean to you?

Simply put, it means peace of mind. From start to finish, FDA-approved drugs have been thoroughly tested for both safety and effectiveness.1 And, it doesn’t stop there. Approved drugs continue to be monitored which can prove to be very important for horse’s health. FDA approval means:

  • The safety and efficacy of the product is based on thorough scientific review prior to approval.1
  • The product meets quality, purity and potency specifications.1
  • Each unit is consistently manufactured under what are called “Good Manufacturing Practices.”1
  • The drug is continually monitored by the FDA after it is on the market to ensure product performance, as well as identify any concerns or questions.1
  • Even if these drugs are not manufactured in the United States, the facilities where they are made at are still subject to FDA approval and inspection.2

Get to know the different types of products.

When you make the decision to purchase a drug for your horse, make sure you really know what you are getting. Understanding a few definitions may help as you and your veterinarian evaluate and make decisions about your horse’s health care.

Did you know?

Multiple studies show that compounded omeprazole products are not as effective and often have great variations in the amount of active ingredient versus what the label claims.1,2

IMPORTANT SAFETY INFORMATION: ULCERGARD can be used in horses that weigh at least 600 pounds. Safety in pregnant mares has not been determined. CAUTION: Safety of GASTROGARD in pregnant or lactating mares has not been determined.

  1. Stanley SD, Knych HK. Comparison of Pharmaceutical Equivalence for Commercially Available Preparations of Omeprazole. AAEP Proceedings. 2011;57:63.
  2. Nieto JE, et al. Comparison of paste and suspension formulations of omeprazole in the healing of gastric ulcers in racehorses in active training. JAVMA. 2002;221(8):1‐5.
  • ®GASTROGARD and ULCERGARD are registered trademarks of Merial Limited.
  • All other marks are properties of their prospective owners.
  • Merial Limited, Duluth, GA. All rights reserved. EQUIUGD1225 (6/12)

Is your drug approved?

Before considering any drug for your horse, make it a priority to try to find out if the drug is FDA-approved. Some tips to help you identify if an animal drug has been FDA-approved are provided below:

  • Look at the product label.

    A six-digit New Animal Drug Application (NADA) number and the statement “Approved by the FDA” are usually found on the drug’s label. In the case of generics, look for the Abbreviated New Animal Drug Application (ANADA) number on the label.

  • Or, search the database.

    Most FDA-approved animal drugs can be found by searching the database at AnimalDrugs@FDA.

  • Ask the manufacturer

    Start by asking the maker of the product for the NADA or ANADA number. Then follow-up by asking if the product is FDA-approved, not just the active ingredient.

Did you know?

There is currently no generic ULCERGARD® (omeprazole) or GASTROGARD® (omeprazole).
If you have been told an equine product containing omeprazole is a generic, you can be assured it’s false. EXAMPLES OF ILLEGALLY MANUFACTURED DRUGS


  • ®GASTROGARD and ULCERGARD are registered trademarks of Merial Limited.
  • All other marks are properties of their prospective owners.
  • Merial Limited, Duluth, GA. All rights reserved. EQUIUGD1225 (6/12)

Have you been misled?
Tell others.

Every horse owner deserves to get what they pay for. And every horse deserves proven treatment and prevention. If you’ve purchased a product that you believe has made misleading claims or has been manufactured illegally, it’s important to spread the word. You could help make a difference in the health of horses, and fellow horse owners’ pocketbooks.

Take Action | Submit your complaint

Did you know?

Because omeprazole is an inherently unstable drug, it is vitally important to have a proven formulation. If omeprazole gets oxidized, it loses efficacy and turns purple in color.1 And while omeprazole is commonly referred to as the purple pill for humans, it is important to stress that the inside of the drug is actually white. Sadly, there are counterfeit equine paste formulations of this drug that are purple in color – inside and out. A purple paste product could be inactive right from the start. Promoting a purple omeprazole formulation could be a scam to cover up a problem with stability of the drug.

  1. Patil A, Gaungaly S, Surana S. A systematic review of benzimidazole derivative as an antiulcer agent. Rasayan J. Chem. 2008;1(3):447-460.


  • Merial Limited, Duluth, GA. All rights reserved. EQUIUGD1225 (6/12)