Nutramax Laboratories Files Lawsuit Against Zesty Paws Alleging E. coli Contamination, Undetectable Active Ingredients in Pet Products

Released: (August 22, 2022)

For Immediate Release:

Contact: Erika Dyer

Lancaster, SC (August 22, 2022) -

Nutramax Laboratories (“Nutramax”) recently brought legal action against Zesty Paws LLC (“Zesty Paws”) and its Hong Kong-based owner, H&H Group(1).  The action is for false advertising regarding the ingredients, quality, third-party rankings and recommendations, and market performance of their products, as well as for making false or misleading comparisons to Nutramax’s DASUQUIN® products

Third-party testing of Zesty Paws’ products indicates that at least some of their products contain inconsistent, and sometimes undetectable, amounts of key active ingredients, and in some instances contaminants, including E. coli and high aerobic microbial counts.

For more than 30 years, Nutramax has placed its valued customers first.  We are committed to providing innovative products that are backed by science and held to the highest quality standards.  Our dedication to science and quality has been recognized by customers and earned us the distinction as the #1 veterinarian-recommended supplement company. 

We take the responsibility as the industry leader seriously and prioritize protecting customers and their pets from low-quality pet supplements and protecting the overall reputation of the industry. 

We believe that pets deserve supplements of the absolute highest quality and pet parents should feel confident that what they give their pets meets label claims and is contaminant free.  We invite you to learn more about our dedication to quality at or by contacting our knowledgeable customer service team at (888) 886-6442.


About Nutramax Laboratories Veterinary Sciences, Inc.: 

Nutramax Laboratories Veterinary Sciences, Inc. develops, and markets supplements backed by research for companion animals to help support their quality of life. Small animal products include Cosequin®, the #1 Veterinarian Recommended Retail Joint Health Supplement Brand*, Dasuquin®, the #1 veterinarian-recommended joint health supplement brand;* the #1 veterinarian-recommended liver support brand Denamarin®; and products supporting urinary tract health, digestive health, and skin/coat health plus overall wellness. To learn more, call (888) 886-6442 or visit 

  Source: Among retail brands.  Survey conducted among small animal veterinarians who recommend oral joint health supplements.

*Source: Among veterinary brands. Survey conducted among small animal veterinarians who recommended oral joint health supplements. 

Source: Survey conducted among small animal veterinarians who recommended liver support brands. 


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