validating site - Sedating antihistamines in children

Losing effectiveness is less well studied, but with ongoing use there could be some development of tolerance or it could be that you are still being exposed to an allergen and that is why symptoms are not controlled. If you took a combination antihistamine/decongestant, it would be more common.However, you had been taking an antihistamine for 5 months. My hunch is that your nasal/sinus problem, for which you had taken the antihistamine in the first place, recurred the moment you stopped it. Read more See 1 more doctor answer Antihistamines are generally safe to take for prolonged periods of time, as long as you're taking the proper dose.

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This over-the-counter medicine contains promethazine, a sedating antihistamine.

Usually administered on the advice of a GP to treat motion sickness or discomfort from certain allergies, it has become the secret weapon for many middle-class mothers embarking on long-haul flights.

Short term sides effects are typically from older antihistamines such as Benadryl (diphenhydramine) that can cause drowsiness and delayed reaction time. Read more Antihistamines are not bad to take if you have asthma, however if you're using them to treat asthma symptoms this is not appropriate.

New generation antihistamines such as claritin, clarinex, zyrtec, xyzal and Allegra are generally very well tolerated. Antihistamines are for itchy, sneezy symptoms secondary to allergies.

Read more Diphenhydramine is the active ingredient in Benadryl (diphenhydramine) and has been around for a very long time. Sometimes, for chronic urticaria, cetirizine [Zyrtec] is dosed at 3 a day . Allegra and claritin are also sometimes used at double or triple dose.

Like most antihistamines, there is not believed to be long term side effects. It is best if you consult a Dr before you take doses higher than usual. Read more Rebound to cessation of antihistamines would be unusual, .

It was the looks of hatred on their faces — glares saying: ‘Can’t you do something about that dreadful noise, you ineffectual mother?

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