[AbiDrew85]

If one is already taking dutasteride, is there a reason to take GTE?

Yes. GTE aromatizes testosterone, it has no effect on DHT other than through chain reaction. By aromatizing testosterone, not as much testosterone gets converted to DHT. But you can still further block DHT with something that specifically targets 5AR. Alternatively, if you are already blocking DHT with something that specifically targets 5AR, you can still use something to decrease testosterone. As long as that's something you want. Using both almost guarantees a decrease in male function, and could even chemically castrate.