I Am Inquiring About ED...I Have A Hard Time Getting

I am inquiring about ED...I have a hard time getting and keeping an erection....unable to penetrate.....have tried what turns me on...dressing in sexy lingerie even that cannot sustain an erection...although this morning tried with my wife to no avail but was able to masturbate with sufficient lube.....am on blood pressure medication...will viagara help me.....thanks in advance

Bob McLellan