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Doctor insights on: Best Time To Take Zyrtec

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Dr. John Chiu
575 Doctors shared insights

Cetirizine (Definition)

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


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What's the best time of day to take zyrtec (cetirizine)?

What's the best time of day to take zyrtec (cetirizine)?

Individualized: When I take zyrtec (cetirizine), (cetirizine) I feel sleepy. Thus, I take my zyrtec (cetirizine) at night time so it will not interrupt my daily activity. Some other people don't experience any drowsiness/sleepiness- then they can take any time they want. ...Read more

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Can I take 2 Zyrtec (cetirizine) at the same time?

Can I take 2 Zyrtec (cetirizine) at the same time?

Yes but why?: You can take 2 Zyrtec (cetirizine) at the same time, but my question to you would be why do you feel the need? If it is for allergic rhinits it may be more helpful to take it once twice a day. If it is for hives/urticaria the dose is sometimes higher. ...Read more

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When is the best time of the day to yake zyrtec (cetirizine)?

When is the best time of the day to yake zyrtec (cetirizine)?

Evening: Because of the low incidence of drowsiness the best time to take it is evening. ...Read more

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Can I take cla and zyrtec (cetirizine) at the same time?

Can I take cla and zyrtec (cetirizine) at the same time?

Yes: It appears so although any diet aid or body fat burning agent can have side effects of its own. Use caution with the tonalin. ...Read more

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Can you take an antibiotic and zyrtec (cetirizine) at the same time?

Abx and Zyrtec (cetirizine): Hello, this combination of medication (an antibiotic and an antihistamine) are commonly used together on the same day. ...Read more

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Is it safe to take allegra (fexofenadine) and zyrtec at the same time?

Is it safe to take allegra (fexofenadine) and zyrtec at the same time?

Allergy meds: Hello. Allergy medication like zyrtec and Allegra (fexofenadine) help with the symptoms of allergy. The dose for an adult is 180 mg for Allegra (fexofenadine) and 10 mg for zyrtec. If you take both on the same day, an increase in dryness as well as sedation will likely occur. There are other medications to help with your allergies. Instead of taking these two medications, see your doctor for other options. ...Read more

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Zyrtec (cetirizine) works best for me but also is very sedating for the next 24 hrs. Can I split the pill and take a lower dose (5 mg) or even 2.5 mg children's dose? Would those doses be less sedating?

Zyrtec (cetirizine) works best for me but also is very sedating for the next 24 hrs. Can I split the pill and take a lower dose (5 mg) or even 2.5 mg children's dose? Would those doses be less sedating?

Possibly but...: Decreasing the dose may also decrease the sedative effects. But it will presumably also decrease the main effects as well. Consider trying other medications, and also ensure that you are not taking zyrtec (cetirizine)-d which is more sedating that zyrtec (cetirizine). ...Read more

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Can I take zyrtec d and benadryl (diphenhydramine) at the same time?

Can I take zyrtec d and benadryl (diphenhydramine) at the same time?

Better not: Unless you have severe allergic reaction, and only once, otherwise it is not advisable, if you have uncontrollable allergies, better see an allergist, check aaaai. Org or caai. Org for an allergist in your area ...Read more

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Can you take claritin, (loratadine) allegra and zyrtec at the same time?

Can you take claritin, (loratadine) allegra and zyrtec at the same time?

You shouldn't: All of those medications are in the same class called non-sedating antihistamines. They should not be taken at the same time. ...Read more

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Is it safe to take zyrtec and Benadryl (diphenhydramine) at the same time?

Is it safe to take zyrtec and Benadryl (diphenhydramine) at the same time?

No: Both zyrtec and Benadryl (diphenhydramine) belong to the same class of medicines called antihistamines. Taking both at the same time would be taking a double dose of medicine.
Zyrtec is taken once every 12 hours, whereas Benadryl (diphenhydramine) is taken every 4 to 6 hours. ...Read more

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What other allergy medicine can you take at the same time as zyrtec (cetirizine)?

What other allergy medicine can you take at the same time as zyrtec (cetirizine)?

Multiple: Zyrtec is an oral antihistamine for allergies. Many people will also use a nasal spray to help with runny nose, nasal itching, and congestion at the same time. The other oral medication that is often given at the same time is singulair (montelukast). ...Read more

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Is it safe to take zyrtec (cetirizine) and loratadine (claritin) at the same time?

Is it safe to take zyrtec (cetirizine) and loratadine (claritin) at the same time?

Zyrtec (cetirizine) loratidine: Yes but can get expensive and I wouldn't recommend it routinely. ...Read more

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Is it safe to take Bentyl (Dicyclomine) and Zyrtec (cetirizine) at the same time, or a couple of hours apart? Thanks!

Is it safe to take Bentyl (Dicyclomine) and Zyrtec (cetirizine) at the same time, or a couple of hours apart? Thanks!

Yes: Bentyl (dicyclomine), is safe with Zyrtec (cetirizine), but not with first generation antihistamines as diphenhydramine or hydroxyzine. Good that you asked, always exercise caution with multiple medications, good luck ...Read more

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Is it safe to take 2 10mg Zyrtec (cetirizine) a day in the case that my allergic reaction is worsening as the 1st dose is wearing off? Otherwise, what would be my best option?

Is it safe to take 2 10mg Zyrtec (cetirizine) a day in the case that my allergic reaction is worsening as the 1st dose is wearing off? Otherwise, what would be my best option?

Other options: If by allergic reaction you are referring to allergic rhinitis (hay fever) then you might want to think about adding additional meds to regimen to help control symptoms better. Nasal saline rinses, steroid nasal sprays, and various other OTC preparations can help alleviate allergies in conjunction with Zyrtec. See an allergist for further testing to determine sensitivities. ...Read more

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Can my son take Benadryl (diphenhydramine) right now while taking Singulair? He takes Zyrtec also but we're out & he's suffering big time!! He's 13, 120 pounds.

Can my son take Benadryl (diphenhydramine) right now while taking Singulair? He takes Zyrtec also but we're out & he's suffering big time!! He's 13, 120 pounds.

Yes: It is safe for him to take Benadryl (diphenhydramine) with Singulair. Based on his weight he can take 50mg every 6-8 hours. It potentially can make him drowsy. All the best and I hope he feels better. ...Read more

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I get headaches from allergies. Can I take Claritin (loratadine) and zyrtec at the same time? Claritin (loratadine) didn't work alone when I traveled away from home.

I get headaches from allergies. Can I take Claritin (loratadine) and zyrtec at the same time? Claritin (loratadine) didn't work alone when I traveled away from home.

Yes, but: Both Claritin (loratadine) and zyrtec (cetirizine) are new generation antihistamines. While there is no harm to using them together, there is likely no added benefit either. The most effective treatment for nasal allergies is the topical nasal steroid sprays such as qnasl, flonase, veramyst, nasonex, (mometasone) etc if a person doesn't have relief with an antihistamine alone. ...Read more

Dr. John Chiu
551 Doctors shared insights

Zyrtec (Definition)

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