Yep, lots of people get tricked by that stuff. It's unfortunate.
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Just spitballing, but I believe pseudoephedrine has a rebound effect--if you take it for a while and stop, the congestion can be worse than before you started. It's possible that's what the doctor was referring to. Or maybe there was a miscommunication, or he was just wrong. In any case, I personally feel comfortable using Sudafed before diving, but I would be a little worried if I had to take it every day over the course of a long dive trip.I am baffled about the Cozumel doctor telling you that taking Pseudoephedrine was counterproductive.
Well, she wasn't taking pseudoephedrine.Just spitballing, but I believe pseudoephedrine has a rebound effect--if you take it for a while and stop, the congestion can be worse than before you started. It's possible that's what the doctor was referring to. Or maybe there was a miscommunication, or he was just wrong. In any case, I personally feel comfortable using Sudafed before diving, but I would be a little worried if I had to take it every day over the course of a long dive trip.