Concentrated, full-spectrum electrolyte replenishment - Full-spectrum, balanced formula - 3x the sodium and potassium per capsule as original Endurolytes BENEFITS: Designed for harsh conditions, high heat, the unacclimated, and those with elevated salt needs, this formula offers three times the sodium chloride (salt) and potassium content of standard Electrolytes. Despite the salt increase, the Extreme formula maintains a complete blend of electrolytes. - Kosher Certification - Endurolytes Extreme is certified by Informed Choice and Informed Sport.