Nopal Endurance™ Prickly Pear Extract For Endurance and Stamina Source Naturals Nopal Endurance™ contains Tex-OE®, a patented standardized extract from the prickly pear or nopal cactus that helps support endurance and stamina by priming the body for athletic activity and physical exertion. Preliminary evidence suggests that Tex-OE® may support the accelerated formation of Heat Shock Proteins (HSPs), stress recovery proteins synthesized by the body to endure physiological extremes. Source Naturals Nopal Endurance is a critical step towards achieving your maximum potential.* 40 mg Capsule Option Available: 30, 60 Suggested Use: 1 capsule with water, at least 2 hours before stress activityonce every three days. Fiber interferes with the absorption, for best results, do not eat or drink foods or beverages containing fiber 2 hours before and 2 hours after taking. Allergies: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.