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GNC AMP Men’s Ripped Vitapak Program Metabolism + Muscle Support: Men’s Multivitamin Blend GNC AMP Men’s Ripped Vitapak Program delivers the power of five science-based formulas to help you achieve your daily nutritional goals as you strive for a lean sculpted physique. Contains a clinically studied men’s multivitamin blend shown to work better than a basic multivitamin* packed with antioxidants to help fight free radicals that can be produced from your workout* Burn up 12x more calories * with Thermo Blend clinically shown to increase metabolism before during after exercise * Improve body composition lean muscle tone* with 4000 mg of CLA Regulate excess water* with Watrex formula which features a nature-based herbal blend In a double-blind randomized placebo-controlled crossover study 25 subjects exercise on a treadmill on two occasions. On one occasion the subjects took the thermogenic 60 minutes before exercise and on the second occasion they took a placebo. When the subjects took the thermogenic they burned three times more calories before 3% more calories during and 12 times more calories for up to one hour after exercise compared to when they took the placebo. When used in conjunction with an exercise program.