Doe,s anyone know if antidepressants can help with this ? It happened to me for the first time where i couldn't achieve a Erection with my new girlfriend and has played on my mind since making it near on impossible getting one ! Docter has prescribed viagra but basicly doesn't work ! I have tried taking something for anxiety before sexual intercourse namely clonazepam which didnt help at all. I have no other heatlh concerns am not overweight and only 29 yrs old .. The one health concern i have had ongoing for years is anxiety.