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Allergies health centre

Antihistamines directory

Antihistamines work by blocking histamine, which can cause allergy symptoms. Side effects of antihistamines may include dry mouth, drowsiness and more. Follow the links below to find BootsWebMD's comprehensive coverage about how antihistamines work, who might take them and much more.

Medical reference


Thumbnail: 4 reasons your allergies aren't improving

Hounded by allergies? Find out what the problem might be.

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