Vitrix has been sitting in the market for some time with a very boring formula. With the likes of Arimatest and A-50 hanging around in the crowd Nutrex should really be thinking ahead. In a few places Vitrix is advertised as more of a sex enhancer. When that is used as a description the product most of the time is a dud for muscle. Nutrex probably were not very sure on the product and covered more ground hitting two markets. The sub brand, black has a testosterone booster too, T-Up. Which is also running a little low on quality especially coming in to 2012. When buying your next test booster leave Nutrex off the list. Maybe in 2010 it would have been a good buy.
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