Arginine and Grape Seed Extract Support Exercise Endurance – Director’s Choice

Written by Joyce Smith, Staff Writer. In this study of 50 college-aged healthy men, those who took 1.5 g or 3 g of arginine plus  300 mg of grape seed extract significantly increased their physical working capacity by 22.4% and 18.8% respectively while there was  no change for the placebo group (-1.6%). (more…)

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