Super 7: Supplements That Improve Endurance

Quercetin And Arginine

Quercetin (an antioxidant) and arginine (an amino acid) both improve blood flow by dilating blood vessels. They have been used effectively to improve blood flow in patients with high blood pressure and heart disease. They’ve also become popular in some endurance supplements, but it is unknown whether or not the small levels typically contained in some supplements would be effective in improving endurance performance.

Dosage: Quercetin, 100-300mg (pure); Arginine, 2,000-3,000mg (pure)

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