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Managing Chronic Health Conditions in Your Athlete

How veterinarians define long-term success when curing the disease is not an option.

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Managing Oral Injuries in Horses
How to Read a Horse Supplement Label
Types of Gastric Ulcers in Horses
Could Your Horse Have a Neurologic Condition?
What to Know Before Adding Hind Shoes
The 5 Domains Model and Equine Welfare
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New VSV-Positive Equine Premises Confirmed in Colorado

Wisconsin Filly Contracts WNV

The All-Important Equine Prepurchase Exam

Florida Horse Infected With WNV and EEE

Improving Equine Joint Health Through Nutrition

Understanding Fecal Water Syndrome in Horses

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Equine Vaccinations for Year-Round Protection

August 18, 2026

Update: EPM in Horses

August 4, 2026

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Dealing With Equine Colic: Here are 33 Do’s and Don’ts

Inside the Equine Gut Microbiome

Parasite Control for Today’s Horses

Managing Your Performance Horse’s Joints

Equine Asthma

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Help, My Broodmare With EMS Has Sore Feet!

October 28, 2026

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Nathan Voris, DVM, MBA

Nathan Voris, DVM, MBA, is a senior veterinarian with Zoetis’ equine technical services team. He completed his internship at Rood & Riddle Equine Hospital, in Lexington, Ky., and spent 10 years as an associate veterinarian with Equine Medical Services in Columbia, Mo. His primary interest areas include preventive equine medicine and social media.

Articles by: Nathan Voris, DVM, MBA

Post-Expiration Date Dewormer Efficacy

Nathan Voris, DVM, MBA September 30, 2013

Is dewormer still good after its expiration date?

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