Tina,
I agree with zuzu that ARB's are probably the easiest of the BP drugs on a man's erectability

and libido (with the exception of diuretetics) but, in general, all classes of BP meds are MURDER on sexuality.
Remember we're talking about hydraulics here...what fills the hose is liquid under pressure....reduce the pressure for health and you've reduced the pressure for EVERYTHING

...and the fire fighters have to carry buckets instead of using the hose.
A hint that I've worked out for myself....a 4 hour drug like propranolol (old Inderal-the first beta blocker) can be largely out of my system when I NEED it to be if you follow my drift!
An alternative is to get really good at managing those "buckets." ROFL!