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Antihistamine


 

An antihistamine is a drug which serves to reduce or eliminate effects mediated by histamine, an endogenous chemical mediator released during allergic reactions, through action at the histamine receptor. Only agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines - other agents may have antihistaminergic action but are not true antihistamines.

See also

◄ Antihistamine: Other agents
Antihistamine: References ►

~ Table of Content ~

►Introduction
►Pharmacology
►Clinical use of antihistamines
►First-generation H1-receptor antagonists
►Second-generation H1-receptor antagonists
►Third-generation H1-receptor antagonists
►Other agents
►See also
►References

 

 

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