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For several decades now antihistamine medication has been widely used to treat and manage allergies. Research has showed that first generation antihistamines are quite effective and pretty accessible due to their relatively low costs. Nevertheless, medical experts warn of possible downsides more or less serious adverse effects that can range from drowsiness to headaches and even hallucinations, so before taking any of the H1 antihistamines - one has to evaluate potential health risks and consult his/her physician in order to avoid any unpleasant consequences. This book provides an informative insight on the topic of histamine antagonists, their examples and possible side effects.

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