Will terazosin help me with erection?

It works for me. I get massive amounts of erections at night when I'm sleeping. For me it works better than Cialis. Unfortunately, at this stage in my life, my wife is less interested in sex.

No. Rarely a side-effect of Terazosin is priapism - a prolonged, painful erection, but it is not used to treat erectile dysfunction.

See https://www.drugs.com/health-guide/impotence-erectile-dysfunction.html for more information