Finasteride kick in

I was looking for info for the kick in time of finasteride meaning when does it become effective in blocking dht since am gonna run a test deca cycle and going to use saw palmetto but gonna switch to finasteride in case the saw palmetto wasnt effective in blocking hairloss,also will the dhn formed from deca and finasteride combination be any worse than the dht from test

Bump

I am not one to answer this question, but I am not sure you need to worry about blocking DHT.... its been up in the air for a long time and has had a lot of conflicting info