Hi Will,
I´m a general physician, and I have been diving for 6 years, also suffered from the same problem several times, so I read as much as I found about it, and also experiment treatments for myself. Couldn´t find a medical reason to explain why not to take oral decongestants or antihistamines (that DON´T make you drowsy, clorfenamine DOES make you drowsy) As long as the congestion is mild you could take claritin D or simililar a couple of hours before diving, but only if you are absolutely sure it does not make you not even a bit drowsy, I don´t recommend intranasal decongestants like Afrin because the always produce a rebound effect and they last short time.
Hope this helps you.
I´m a general physician, and I have been diving for 6 years, also suffered from the same problem several times, so I read as much as I found about it, and also experiment treatments for myself. Couldn´t find a medical reason to explain why not to take oral decongestants or antihistamines (that DON´T make you drowsy, clorfenamine DOES make you drowsy) As long as the congestion is mild you could take claritin D or simililar a couple of hours before diving, but only if you are absolutely sure it does not make you not even a bit drowsy, I don´t recommend intranasal decongestants like Afrin because the always produce a rebound effect and they last short time.
Hope this helps you.