How early after rad. Prostate sugery is safe to work on penial recovery?

May be... There has been no magic timing to start ed-rehabilittion after prostatectomy for prostate cancer. But it's reasonable to start such as soon as the patient feels comfortable, usually after post-op catheter removal, probably 2 weeks after surgery. The options are using pde-5 inhibitors such as viagra, levitra, (vardenafil) or cilais, and / or penile pump device. Of course, individual difference among urologist.