In my situation - sinus congestion ... unfortunately, this happens often to me, so I often take decongestants (pseudoephedrine) prior to a dive.
EVERY instructor and EVERY trainig agency advises against this - I am not arguing with them, nor am I suggesting others should disregard their own basic diving training.
They do?
Pseudoephedrine has been popular with divers for 10 years that I know of. It's more difficult to obtain since federal controls put it behind the counter, IDs required, sales limited and recorded, as OTC drug companies have been pushing easier to market drugs. (It was controlled because Meth producers were buying the reds in mass quantities to use it in their recipes.) I still find it, but in 30 mg tabs, not the 60s I used to get, and I have to pay more for it - but I take it daily for allergies along with an antihistamine.
Most divers use it to aid in equalizing. I wish Instructors would encourage OW students to watch this 45 minute video:
Doc's Diving Medicine Home Page
My home bud has
always had issues equalizing, from our OW check out dives when he got a barotrauma finishing the course, all trips, all practice dives, anytime - so he uses all the tricks in the video, plus antihistamines & pseudoephedrin, and a Nettiepot. I remember him coming back to the boat on his first trip to Cozumel with blood & snot both in his mask, which he smeared across his bald forehead once once on the boat. :shocked2:
Tracy, you might want to work on your equalizing - watch the video, equalize earlier & more often including on the boat ride out to the site, and consider other ideas. The decongestant has saved many dives, but it's not for everyone. If you try it, first try it at home when you have nothing planned just in case it keeps you awake or bothers you.
Edit: Oh, I see that you are an RN. Ok, so you know about Pseudoephedrine, cool.