Pre-Workout Formula Supports Muscle Production* Nitric Oxide Precursor* NOW® Sports Arginine Stack is the ultimate energy sports supplement that also supports optimal performance.* Arginine Stack has creatine, a well-studied sports supplement, for its ability to support lean muscle production and muscle cell fuel availability.* Yerba maté and guaraná enhance alertness, while rhodiola supports the body's balanced response to stress.* Green tea extract quenches the free radicals formed during intense exercise, and it has also been shown to support heart health.* This product is sold by weight not volume. Natural color variation may occur in this product.
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