Antihistamine drug crystals coloured scanning electron micrograph SEM Antihistamines block the effect of the chemical histamine a natural chemical produced by the immune diseasefighting system of the body in response to an allergen such as pollen Histamine causes symptoms such as itching swelling or reddening Antihistamines are also used in cough remedies as sedatives and as an emergency treatment for anaphylactic shock a severe allergic reaction
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Product ID: 22106193523A