Sedating antihistamines uk

Antihistamines are medicines often used to relieve symptoms of allergies, such as hay fever, hives, conjunctivitis and reactions to insect bites or stings.

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Advances in pharmacology have permitted more specific targeting of receptors, and greater selectivity of agents, which necessitates greater precision when describing these agents and their effects: Doctors often administer sedatives to patients in order to dull the patient's anxiety related to painful or anxiety-provoking procedures.Histamine is a chemical released from allergic cells in the body (such as mast cells and basophils), usually in response to an allergen like cat dander or pollen.When histamine is released by allergic cells in the nose and eyes, the result is sneezing, runny nose, itchy eyes/nose/throat, nasal congestion, and post-nasal drip.Some sedatives can cause psychological and physical dependence when taken regularly over a period of time, even at therapeutic doses.Dependent users may get withdrawal symptoms ranging from restlessness and insomnia to convulsions and death.Anxiety and agitation with diffuse, deep, odd body sensations:"..bones are on fire", "I feel weird all over", "...a deep pricking, crawling sensation...".

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