Sedating antihistamines side effects online dating in jacksonville fl
Drowsiness and reduced mental alertness are particularly common (seen in up to 50% of those taking the medications).
Cells that line the blood vessels in the brain regulate which chemicals can enter the brain.
The following article presents aspects of these medication types in more detail to understand their role in the treatment of nasal allergy.
The above table simply shows the overview of treatments; the following sections provide additional information about these treatment types and helps explain some of the details about these treatments.
The reason these drugs induce sleepiness is that they are able to cross the blood brain barrier.
They usually begin working between 30 to 60 minutes after being taken.
However, histamine is only one of the many chemicals involved in the allergic reaction, which explains why relief from antihistamines is usually only partial. Bovet and Straub at the Pasteur Institute discovered the first antihistamine in 1937.
Histamines can cause symptoms of swelling, sneezing, itching (nose, throat, roof of mouth), and a runny nose through the nostrils or down the back of the throat (post-nasal drip).
Antihistamines are effective in treating the sneezing, post-nasal drip, and itching.
The attachment of the histamine to the receptors causes these cell to be "activated," releasing other chemicals which produce the effects (symptoms, see previous sectiohn "Nasal allergy symptoms: an overview of treatments") that are associated with nasal allergies.