Sedating antihistamines side effects
Some antihistamines are found in combination pills that contain other medications.
For example, antihistamines are commonly combined with decongestants (for example, Claritin-D, Zyrtec-D, Allegra-D), a class of medicine that is used to dry up the nasal passages and relieve head congestion.
A strong sedative effect of the older first generation antihistamines is one of the most distinguishing features between the two groups.
It is the most widely used allergy medicine for most of the common allergic diseases.
They're usually divided into two main groups: They also come in several different forms – including tablets, capsules, liquids, syrups, creams, lotions, gels, eye drops and nasal sprays.
There's not much evidence to suggest any particular antihistamine is better than any other at relieving allergy symptoms.
Antihistamines also can be used on an as needed basis for those who experience occasional symptoms or symptoms triggered by exposure to certain irritants such as animal hair, plants, medications, and food products.
Some antihistamines also may be used occasionally to help with sleep.
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Antihistamines work by blocking the effects of a chemical called histamine that is responsible for many allergic symptoms.