Sedating anti histamine large but lonely dating site

Posted by / 15-Nov-2016 10:44

Sedating anti histamine

However, if itching is still a problem your doctor may prescribe you an antihistamine.Antihistamines are most commonly used to control the symptoms of allergies such as hay fever.These drugs are sometimes abused for their anticholinergic properties.Toxic Mechanism: Unlike the non-sedating antihistamines they are more lipophilic and cross the blood-brain-barrier easily.

It's stored in cells called mast cells, in almost all tissues of the body, and is released when the body reacts to a foreign substance (known as an allergen).

The sedating antihistamines include brompheniramine, chlorpheniramine, cyproheptadine, dexchlorpheniramine, dimenhydrinate, diphenhydramine, doxylamine, pheniramine and promethazine.

In overdose they cause dose-dependent CNS depression, anticholinergic effects and in massive overdose cardiovascular toxicity.

This histamine can then bind with receptors to trigger increased blood flow to the surrounding area, which can lead to symptoms such as swelling and increased secretions, resulting in a blocked or runny nose, watery eyes and, most importantly, itchiness.

Antihistamines don’t stop allergic reactions from happening, but they do block the histamine receptors from being able to be triggered by the histamine that is released, reducing your symptoms.

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