Can flu like symptoms effect a mans ability to get an erection?

Yes: If you are not feeling well to begin with, and you are feeling ill, can you simply may not be in the mood. Another possibility is that you have the occasional difficulty with erectile dysfunction that every man has. Amlodipine can also cause sexual dysfunction in both men and women. It's a possibility that number of those factors were at the play. Hopefully it will simply improve with time after the flu is gone.

Yes: Most people with the flu feel sick as a dog and sex is not high on their list of things to do! i would also note that the amlodipine you take does list erectile dysfunction as an adverse side effect in 1 in 1000 users.