Clinical effects of a combination of phenylbutazone and omeprazole on chronic lameness in Mongolian horses.
Authors: Li Zhengyi, Du Shan, Wang Xiaomin, Zhang Lanxin, Liu Xinyu, Fan Quanrong, Yang Huidi, Gao Ruifeng
Journal: Equine veterinary journal
Summary
# Editorial Summary Phenylbutazone remains the frontline analgesic for equine lameness, yet its well-documented association with equine gastric ulcer syndrome (EGUS) has prompted many clinicians to administer omeprazole prophylactically alongside it—a widespread practice lacking rigorous evidence, particularly in native horse populations. Li Zhengyi and colleagues investigated whether this combination approach was both efficacious and safe in Mongolian horses presenting with chronic lameness, addressing a significant gap in the literature for breeds adapted to extensive management systems where gastrointestinal health may differ from performance horse populations. Their findings will provide evidence-based guidance on whether concurrent omeprazole administration genuinely mitigates gastric pathology whilst maintaining phenylbutazone's analgesic benefits, or whether alternative protocols warrant consideration. For equine practitioners managing chronic lameness in native and hardy breeds, understanding the clinical outcome of this combination therapy—rather than relying on extrapolated data from Thoroughbreds and Warmbloods—will inform safer, more effective pain management strategies. Publication of specific efficacy data, ulcer incidence rates, and any adverse effects in this population should clarify whether this combination merits continued routine use or whether selective application based on individual risk factors is more appropriate.
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Practical Takeaways
- •While PBZ is standard for lameness management, concurrent omeprazole use for EGUS prevention is common practice but lacks evidence in Mongolian horses specifically
- •Veterinarians should await results of this study before modifying protocols for combined PBZ-OME therapy in this population
- •Consider gastric ulcer risk as a significant consideration when prescribing phenylbutazone for chronic lameness cases
Key Findings
- •Phenylbutazone is the most commonly used drug for treating lameness symptoms in horses
- •Phenylbutazone is associated with adverse effects including gastric ulcer syndrome
- •Omeprazole is often prescribed concurrently with phenylbutazone to prevent EGUS development
- •Efficacy and safety of combined phenylbutazone and omeprazole treatment in Mongolian horses with chronic lameness remains unknown