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SoCalOffshore:My EMT advised taking Claratin D 24 hour and gave me Flonaise.
Here is some expanded info on common OTC drugs divers take for this and related problems:
SUDAFED in its original form ( PSE - pseudoephedrine ) is a Decongestant that works directly on the nasal and ear areas - "by contricting blood vessels," but being chemically similar to Speed, some people find it increases their heart rate significantly, making them feel edgy, etc. OTC, but take with caution. This is the one DAN cautions about when diving Nitrox, although nothing has really been proven.
CLARITIN contains an Antihistamine ( loratadine ) "a type of medicine that blocks the action of histamine, a natural substance in your body that is released by your immune system during an allergic reaction. " This is a more indirect approach that many are happy with.
CLARITIN D contain both the Decongestant and the Antihistimin ( loratadine and pseudoephedrine ) and while I prefer a generic form of this comfination for the 1 - 2 punch on a day to day regime, I don't use it the day of Nx diving until finished. I have seen divers say they were taking Claritin, when they were taking this combination of Sudafed & Claritin, that is PSE & loratadine.
SUDAFED PLUS is another combination of Decongestant and Antihistimine. Thsi one is known to cause drowsiness, and possibly not a good idea when narcosis is a risk. "This preparation contains two active ingredients, pseudoephedrine and triprolidine. Pseudoephedrine is a decongestant. It works by stimulating receptors (alpha-receptors) in certain areas of the body, particularly in the lining of the nose and sinuses. Alpha-receptors are present on the muscles in the walls of blood vessels. When these receptors are stimulated by pseudoephedrine, the muscle contracts causing the blood vessel to narrow. This results in less fluid travelling through the vessels. Decreasing the amount of fluid flowing through the vessels in the lining of the nose and sinuses results in decreased amounts of fluid pushed out into these linings. This reduces the production of mucus, thereby relieving the symptoms of nasal congestion in conditions such as allergies and colds. Triprolidine is a sedating anti-histamine. It acts by blocking the action of histamine which is a chemical released when an allergic response occurs. Histamine is the chemical in the body that causes the symptoms of an allergic reaction. These can include inflammation of the skin, airways or tissues, rashes, itching of the skin, eyes or nose, nasal congestion and narrowing of the airways. By blocking the actions of histamine, triprolidine helps prevent and relieve the typical symptoms of an allergic reaction such as nasal congestion. Triprolidine is more likely to cause drowsiness than the newer group of non-sedating anti-histamines. Therefore, the combination of pseudoephedrine and triprolidine helps treat and prevent nasal/sinus congestion and itchy watery eyes."
MECLIZINE ( Brand Names - Antivert, Bonine ) is an Antihistimine commonly taken to prevent seasickness.
For best results, consult your ENT physician, then call DAN for additional information that applies to diving. Mileage may vary. :colgate: