Has become a daily essential
Clean ingredient list with no fillers I didn't recognize — exactly what I look for. Great value for the serving count — works out cheaper per dose than the big brands.
Free shipping over $50No proprietary blends · fully disclosed labelsThird-party tested · GMP certified facility
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The star rating and review count summarize aggregated product feedback. The written reviews shown below are representative samples and are not verified individual purchases.
4.7
out of 5
Clean ingredient list with no fillers I didn't recognize — exactly what I look for. Great value for the serving count — works out cheaper per dose than the big brands.
Dissolves completely in water, even without a blender. Consistent quality across every tub I've bought so far.
Label is clear about dosing and the bottle doesn't take up much shelf space. Tastes way better than I expected for a supplement; I actually look forward to taking it. Sleep quality went up almost immediately, which is exactly what I wanted.
Blends smooth in seconds; texture is consistent every scoop. Resealable tub keeps everything fresh and the scoop sits right on top.
Label is clear about dosing and the bottle doesn't take up much shelf space. Zero clumping, which I appreciate since my old one needed a whisk every time.
Label is clear about dosing and the bottle doesn't take up much shelf space. Clean ingredient list with no fillers I didn't recognize — exactly what I look for.
Showing 6 of 34 reviews

GAT Sport. NOW WITH NITROSIGINE FOR EVEN GREATER PUMPS! This new formula boasts Nitrosigine as its only source of Arginine. Nitrosigine has been shown to inhibit the enzyme responsible for breaking down Arginine, making it the superior choice of arginine supplementation and a perfect synergistic partner to L-Citrulline. Nitrosigine has scientifically validated that benefits last up to 6 hours after dosing. 1-SCOOP SERVING: NITRAFLEX is so potent, only 1 scoop (1 serving) is necessary. Do not exceed 1 scoop in a single 24-hour period. Do not take NITRAFLEX within 5 hours of bedtime. 200mg OF BORON CITRATE IN EVERY DOSE OF NITRAFLEX: This trace mineral has been shown to lower estrogen, while raising free testosterone by 28.3% in as little as 7 days!