Non sedating antihistamines products

It's believed that these antihistamines work by blocking the effect of the neurotransmitter acetylcholine, which transmits nerve signals between the ear's vestibular, or balance, center and the part of the brain involved with nausea and vomiting.

Just remember that, as mentioned above, these antihistamines are likely to make you drowsy—though meclizine may be less sedating than the others.

But if you have a severe allergic reaction to a food or other substance—also known as anaphylaxis—you need an immediate dose of injectable epinephrine (adrenaline) administered with an auto-injector such as Epi Pen, or else given by emergency personnel or in an emergency room.

Anaphylactic reactions cause plummeting blood pressure and difficulty breathing or swallowing and can be life-threatening.

It depends on your age and how long you use them for.Note that even the newer generation antihistamines, though often referred to as "non-sedating," can cause drowsiness and other symptoms in some people, especially older adults, particularly if they take them at higher doses.So start at the lowest dose and see if you get relief. If you are experiencing an itchy rash or hives but no other complications, it’s fine to take an oral antihistamine.It also causes small blood vessels, or capillaries, in your mucus membranes to expand (dilate), which can cause nasal congestion.An antihistamine relieves these symptoms by preventing histamine from attaching to cells’ histamine receptors.

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