Can I use the combination of saw palmetto and stinging nettle to treat androgenetic alopecia?

saw palmetto is known to be dht blocker and stinging nettle is said to be capable of revitalizing hair follicles and cause growth of robust hair.is there any bad side effect of these ingredients like that in minoxidil and finasteride?is it okay for males to use saw palmetto?i mean,can the use of it mean the development of male sexual characteristics will be haltered?or there will be sufficient balance of dht and testosterone to not cause any sexual problem.