Good advice given here.
Some gentlemen may experience difficulties with erections while others won't notice any change at all.
The more you "worry" about it, the more likely you will have some issues. Difficult to not think about it but honestly, try your best not to.
Again, if you get with a lady who is understanding and thorough (? LOL!), you should do well.
Good luck to you AND your new meds. DEFINITELY don't change or add anything without checking with your doc though. We'd like you to stick around!