CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Hay fever drugs. Blister or bubble packs of tablets & capsules for the treatment of hay fever. Hay fever drugs are antihistamines that block the effect of the chemical histamine, which is produced by the body during an allergic reaction to pollen or dust. Histamine causes redness, itching and swelling in the tissues of the eyes and nose, resulting in tear formation, sneezing and excess nasal secretions.
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