Sick of contradictions (saw palmetto) help

Mabey some of you can shed some light on this for me, I've started taking DHEA supplements and to hopefully stop the DHT conversion from them I'm also taking saw palmetto which i've heard will help block DHT. Now i've read that saw palmetto is used to increase sex drive which is also another reason why i bought the supplement, but through further research i've read that a side effect could be decreased sex drive and impotence.

So which one is it? Is it more likely to increase sex drive or decrease it? I hate these contradictions.

i've read it helps the boys if you're using something (like a ph) even still, i wouldn't waste my money on it