05/26/2026
Polyneuritis VS EPMSD
How EPMSD May Support Horses Experiencing Polyneuritis-Like Neurological Stress
A Systems-Based Educational Overview
Polyneuritis equi is a neurological condition involving inflammation of peripheral nerves—most commonly the cauda equina and sacrocaudal nerve roots. Clinical signs may include weakness, muscle atrophy, gait abnormalities, reduced tail tone, altered sensation, poor coordination, and chronic inflammation. Current veterinary literature suggests immune-mediated inflammation may play a role in some cases.
Source: Merck Veterinary Manual — Diseases of the Peripheral Nerves in Horses
EPMSD was designed around a systems-based philosophy focused on supporting multiple body systems commonly stressed during chronic neurological dysfunction. Rather than targeting only one pathway, the formula is intended to support circulation, antioxidant balance, connective tissue integrity, digestive function, bile-associated detoxification pathways, and overall systemic resilience.
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1. Neuro-Immune Axis Support
Neurological inflammation is closely connected to immune signaling. Chronic inflammatory cytokines and oxidative stress may contribute to ongoing irritation surrounding nerves and supporting tissues.
MSM (methylsulfonylmethane) provides a sulfur source involved in glutathione production and antioxidant activity. Equine studies have shown MSM may help reduce exercise-associated oxidative stress and support inflammatory balance in muscle tissue.
Source:
Marañón et al., “The Effect of Methyl Sulfonyl Methane Supplementation on Biomarkers of Oxidative Stress in Sport Horses”
Cinnamon contains polyphenols and cinnamaldehyde compounds that have been studied for antioxidant and anti-inflammatory activity. These compounds may help support vascular function and healthy inflammatory signaling.
Source:
Cinnamon Polyphenols and Inflammation Review
Together, these ingredients are theorized to support the body’s ability to manage oxidative stress associated with chronic inflammation.
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2. Gut–Brain Axis Support
The nervous system and digestive system are heavily interconnected. Horses experiencing chronic neurological stress often also experience digestive instability, poor nutrient absorption, altered appetite, or weight loss.
Wormwood (Artemisia absinthium) has historically been used as a bitter digestive herb. Bitter compounds may help stimulate digestive secretions and bile-associated digestive processes. Horses naturally secrete bile continuously because they do not possess a gallbladder.
Source:
Equine Digestive Physiology Review
Supporting digestion and nutrient absorption may help improve the body’s access to amino acids, minerals, and energy substrates needed for tissue maintenance and recovery.
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3. Fascia–Nerve Axis Support
Fascia surrounds nerves, blood vessels, muscles, and lymphatic structures. Chronic inflammation may reduce fascial glide, hydration, and tissue elasticity.
Shavegrass (horsetail) contains silica-associated compounds traditionally linked to connective tissue support. Silica plays a role in collagen-associated structural integrity and connective tissue maintenance.
Source:
Silica and Connective Tissue Review
MSM and silica-containing plants are often discussed together in connective tissue support because sulfur and silica both contribute to structural tissue integrity.
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4. Blood–Nerve Axis Support
Nervous tissue depends heavily on oxygen delivery, nutrient transport, and healthy microcirculation. Reduced circulation may impair tissue resilience and recovery capacity.
Cinnamon has been studied for vascular-supportive properties and antioxidant effects that may help support healthy blood flow dynamics.
Supporting circulation may assist nutrient delivery to stressed neuromuscular tissues.
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5. Liver–Bile–Detox Axis Support
Inflammation, oxidative stress, cellular waste products, and microbial byproducts place demand on detoxification pathways.
Traditional bitter herbs like wormwood have historically been used to support digestive and biliary function. Sulfur-containing compounds like MSM are also associated with phase II detoxification support due to sulfur’s role in glutathione-related pathways.
These systems may become especially important during periods of increased inflammatory stress.
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Why the 90-Day Structure Matters
Nervous tissue, connective tissue, and red blood cell turnover occur gradually over time. Tissue remodeling, inflammatory regulation, and systemic adaptation are not immediate processes.
The 90-day structure was developed around:
• Progressive systemic support
• Tissue turnover timelines
• Connective tissue maintenance
• Nutritional replenishment
• Gradual neurological stabilization support
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Summary
EPMSD is positioned as a multi-system botanical support formula intended to help maintain:
• Healthy inflammatory balance
• Connective tissue integrity
• Digestive and bile-associated function
• Circulatory support
• Antioxidant activity
• Detoxification pathways
• Overall neurological resilience
This systems-based approach reflects the understanding that neurological dysfunction often affects far more than nerves alone.
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Sources:
• Merck Veterinary Manual – Peripheral Nerve Diseases in Horses
• Marañón et al. – MSM and Oxidative Stress in Horses
• Cinnamon Polyphenols and Inflammation Review
• Equine Digestive Physiology Review
• Silica and Connective Tissue Review
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Old West Holistic Company
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866-437-6397
Disclaimer: This content is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. EPMSD is not a substitute for veterinary care. Always consult with your veterinarian regarding your horse’s individual health needs.