
Clarinex is widely used and popular because of its non-drowsy characteristic. Many antihistamines tell users to avoid machinery or driving while taking it, but Clarinex does not. This drug was also the first to boast that grapefruit juice did not affect its absorption.

Clarinex is classified as an antihistamine. This means its method of action is to block the effects of histamine, a natural substance in your body released by an overactive immune system during an allergic reaction. An allergic reaction occurs when your body inadvertently reacts to substances it views as harmful. These substances are called allergens.

Both drugs are produced by the Schering Corporation, whose ads signify a desperate attempt to maintain market share. The patent is about to run out on Claritin, the most profitable antihistamine of all time with annual sales of more than $2 billion. ...

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