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Doctor insights on: How Long Can I Take Zyrtec

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How long can you take zyrtec?

How long can you take zyrtec?

Depends: on the condition, some would take it for years, but if you need it for long, better run it by tour doctor, best wishes ...Read more

Dr. John Chiu
563 doctors shared insights

Cetirizine (Definition)

Ceftirizine is the generic name of an antihistamine previously marketed under the ...Read more


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How long can you take zyrtec (cetirizine)?

Zyrtec (cetirizine) use: Zyrtec (cetirizine) can be taken daily indefinitely, there are no long term side effects from accumulated drug. ...Read more

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How long does it take for zyrtec (cetirizine) to be out of your system?

How long does it take for zyrtec (cetirizine) to be out of your system?

Effects of Zyrtec (cetirizine): The half-life of Cetirizine (the time it takes for your body to get rid of half of the drug) is about 8 hours. The vast majority should be gone within about 24 hours. ...Read more

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Is it safe to take zyrtec (cetirizine) most days of the year or is there a chance for long term problems with taking it too much? I try to avoid taking medicines.

Is it safe to take zyrtec (cetirizine) most days of the year or is there a chance for long term problems with taking it too much? I try to avoid taking medicines.

Zyrtec (cetirizine) : Zyrtec is a safe anti-histamine with a relatively good tract record in long term users. But note that all medications have side effects. However, some are willing to take a small and smart risk for a better quality of life. Discuss nasal antihistamines & other non-systemic treatments with your doctor. With immunotherapy, an immunologist may be able to help avert your need for medications. ...Read more

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M58, may I take zyrtec (cetirizine) 1 tab with Norvasc 5mg for long time. Any drug interaction?

M58, may I take zyrtec (cetirizine) 1 tab with Norvasc 5mg for long time. Any drug interaction?

Yes: No problem, there are no known interactions. (also, I personally have been taking Zyrtec (cetirizine) for at least 10 years and prior to that, some kind of anti-histamine for 40 years - without harm). ...Read more

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I have bad allerigies sometimes. Cetirizine stopped working so i take zyrtec (cetirizine) d. I heard u cnt take decongestants too long. Wat are longterm treatments?

I have bad allerigies sometimes. Cetirizine stopped working so i take zyrtec (cetirizine) d. I heard u cnt take decongestants too long. Wat are longterm treatments?

Allergies: Your best option for long term of your allergies is allergen desensitization, a board certified allergist can help you identify your triggers and desensitize you and decrease your dependence on medications. ...Read more

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If i take zertec for a long period 10mo then switch to Claritin (loratadine) can my sinuses become dependent on zyrtec and over produce mucus w/o zyrtec in system?

If i take zertec for a long period 10mo then switch to Claritin (loratadine) can my sinuses become dependent on zyrtec and over produce mucus w/o zyrtec in system?

Unlikely: While the "good" effect of zyrtec (cetirizine) will be gone in several days, there is no known problem of "rebound" or worsening symptoms when stopping oral antihistamines. More likely, is the continued exposure to the allergens. Here is where an allergist will be able to assist. ...Read more

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EKG showed QT/QTc of 408/462. Is this number too high? I take Prozac and Zyrtec daily. Could that cause a prolonged qt and is it safe to take?

EKG showed QT/QTc of 408/462. Is this number too high? I take Prozac and Zyrtec daily. Could that cause a prolonged qt and is it safe to take?

It's OK: Rule of Thumb is in general we consider QTc of 480+ as something to look at, and even some might consider more than 500 as significant ...Read more

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Fluid in middle ear, doc gave antivert, zyrtec, nasacort, (triamcinolone) how long take to dry up fluid in ear? Repeat bouts, can you stop it from happening again?

Fluid in middle ear, doc gave antivert, zyrtec, nasacort, (triamcinolone) how long take to dry up fluid in ear? Repeat bouts, can you stop it from happening again?

Keep nose open: Fluid in the middle ears is usually from obstruction of the eustachean tube opening. If you have had repeated bouts , it may be worthwhile for you to consult an allergist to find out why. ...Read more

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Is it okay to take 20 mg zyrtec/ daily?

Is it okay to take 20 mg zyrtec/ daily?

Probably: Although the usual dose of zyrtec (cetirizine) for an adult is 10 mg daily, under the direction of a physician, some patients may need more. It would be important to discuss the dosing with your physician as another approach to treatment may be indicated. Avoid drinking alcohol and be aware that drowsiness may be more likely at higher doses. ...Read more

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I accidentally took an expired (18 months ago!) Zyrtec pill. Should I take the correct (unexpired) one nowbad well or should I wait 24 hours?

Wait: Medication can lose it's effectiveness past expiration date, but I would not expect it to not be effective at all; especially if only 18 months expired. It will not be harmful at all that you took an expired zyrtec. It will probably still be almost as effective as it was prior to expiration, so I would just wait and take a new one at your normal time the next day. Hope this helps! ...Read more

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How long for zyrtec (cetirizine) to work?

About 1 hour: The onset of action for zyrtec (cetirizine) to clinically improve symptoms is about 1 hour. The reference is listed here: http://www.Ncbi.Nlm.Nih.Gov/pubmed/11770694. ...Read more

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How much zyrtec (cetirizine) can you take?

How much zyrtec (cetirizine) can you take?

Follow Directions: The directions for taking zyrtec (cetirizine) are on the bottle. One should not exceed these dosing recommendations. ...Read more

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Can i take zyrtec (cetirizine) twice a day?

Can i take zyrtec (cetirizine) twice a day?

Yes: It is safe if you need to take it twice daily. Do note that you may get drowsy from it. ...Read more

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Can i take more than one zyrtec (cetirizine)?

Can i take more than one zyrtec (cetirizine)?

Zyrtec (cetirizine): The recommended dosage is 10mg once a day. More than that is considered an overdose and would not be recommended. ...Read more

Dr. John Chiu
543 doctors shared insights

Zyrtec (Definition)

Zyrtec is a non-sedating antihistamine which is a kind of antihistamine type drug (common ...Read more