Question about natural dht blockers, help!

[ILikeReggae]

I'm 22 years old. I have receding hairline and thin hair.

I don't want to start Propecia because of the risk.

Soo i've been reading about some natural dht blockers.
I know this might not work at all but i might aswell try.

I bought a bottle called 'Vital prostate' it contains some things that supposely block some DHT. It says take 2 pills a day. 2 pills contain:

Pumpkin seed oil - 560mg
Nettle extract - 200mg
Zink - 10mg
Saw Palmetto - 220mg
And some vitamins etc.

So my question is, on the bottle it says it's for men who are 40+. I'm 22 so would it be harmfull for me to take this??

ps. I'm also drinking Green tea & Nettle Tea because i read they may block DHT.

Is it ok to take natural prostate pills that are supposely for 40+ at age 22??

Thanks!