I am 64 and had this test done before my NF 2 1/2 years ago. I had a slight feeling of something caught in my throat but nothing that bothered me really bad. The most annoying thing about
the test was having to go off my Nexium 10 days before the test. I developed an ulcer in that time.. but as soon as the test was over I was able to go back on the Nexium until my surgery. My surgeon gained enough conclusive info from this last test to submit to insurance and they approved the surgery.
I guess it affects each person differently.
good luck with whichever path you take..