What is Claritin?

Loratadine (INN) is a second-generation H1 histamine antagonist drug used to treat allergies. In structure, it is closely related to tricyclic antidepressants, such as imipramine, and is distantly related to the atypical antipsychotic quetiapine.

Loratadine is marketed by Schering-Plough under several trade names (e.g., Claritin) and also by Shionogi in Japan. It is available as a generic drug and is marketed for its nonsedating properties. In a version named Claritin-D or Clarinase, it is combined with pseudoephedrine, a decongestant; this makes it useful for colds, as well as allergies but adds potential side effects of insomnia, anxiety, and nervousness.

Questions and answers on "Claritin"

I have chronic rhinitis and am always congested. I also live with very bad allergies in which I take Claritin-D in the day time. This usually does...

doctor1 MD


I have gone through your query and can understand your concerns..

As per your complain it seems that you have...

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I just started Claritin D and just had about 5 minutes of excessive Sweating, is this a side effect? I do not have a...

doctor1 MD

Welcome to Healthacare Magic,

Claritin-D is a Anti-Histaminic medication and it doesnt cause any sweating. The possible side effects would be...

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My right ear feels blocked, and in my left ear I hear a whistling sound when people speak or when I hear most noises. This is the 4th day. Have...

doctor1 MD

Welcome to healthcare magic

I have read the query and understand your concern,the tinnitus(whistling in ears) is most likely due to residual...

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