a lot of people say to stay away from that combo. I am not sure of the exact reason as to how they react and why it would cause increased hairloss. I ran deca at 600mg , test enanthate at 500mg. a week with 2.5 mg a day of finasteride and had no hair loss. That isnt to say that it is not a no no. Everyone reacts differently. Just letting you know how my experience went. Good luck bro.