Fahrenheit used to be an average supplement brand. Individual ingredients based products with different names and extra contents. Recently they have stepped it up a notch with Resurrect, little bit of Lean EFX and Volatile. GF-T21 is another supplement that has gained Fahrenheit a bit more respect. The testosterone booster packs in 500mg of natural extracts into one capsule. There are a few familiar names, ginger, liquorice, yerba de tago but the most recognizable one is mucuna pruriens. Combined with all the other unique ingredients a 21 day cycle of GF might be worth the money.