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Doctor insights on: Cetirizine Pseudoephedrine Side Effects

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I have been taking cetirizine and pseudoephedrine recently im having trouble sleeping, will this be why?

I have been taking cetirizine and pseudoephedrine recently im having trouble sleeping, will this be why?

Probably both: Both Cetirizine and pseudophed can affect sleep. Cetrizine can be sedating and pseudophed is a stimulant so it can make falling asleep challenging. ...Read more

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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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I have had post nasal drip for the past few months. I am taking Zyrtec. And Flonase. I cannot take pseudoephedrine it makes heart race. What can I do?

I have had post nasal drip for the past few months. I am taking Zyrtec. And Flonase. I cannot take pseudoephedrine it makes heart race. What can I do?

See allergist: If you have not responded to Zyrtec (cetirizine) or Flonase, it is time to consult an allergist. Pseudoephedrine provides decongestion but will not reduce the post-nasal drips. ...Read more

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What are the side effects of pseudoephedrine?

What are the side effects of pseudoephedrine?

Vasocontrictor: Pseudophedrine is a vasoconstrictor. This means it has the ability to temporarily narrow blood vessels. Taken orally this can cause dizziness, rapid heart rate (palpitations) or headache. ...Read more

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Is it safe to take claritin-d every day? Are there long term side effects and what does pseudoephedrine interact with, if anything?

Is it safe to take claritin-d every day? Are there long term side effects and what does pseudoephedrine interact with, if anything?

Allergies: In general, it it safe to take antihistamines everyday for allergies. Claritin-d includes the decongestant as you mentioned, and i tend to avoid that for people on a long term basis. It increases vasoconstriction and this has a variety of effects including more work for the heart and elevated blood pressure. There are other medications that can help with congestion. See ent/allergist. ...Read more

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Severe allergies. OTC don't work anymore except pseudoephedrine and benedryl (side effects). Recommend OTC. DO NOT SAY SEE A DOCTOR - can't afford?

Severe allergies. OTC don't work anymore except pseudoephedrine and benedryl (side effects). Recommend OTC. DO NOT SAY SEE A DOCTOR - can't afford?

Nasal sprays: You could try nasal sprays - Nasacort Allergy 24HR or NasalCrom, but these may take some time to work. Some patients do well with Saline nasal washes or Neti Pots. Also try using Zyrtec or Claritin instead of Benadryl, (diphenhydramine) to reduce side effects. ...Read more

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What are cetirizine tablet side effects?

What are cetirizine tablet side effects?

Generic for Zyrtec (cetirizine): The most common side effects of Cetirizine are sedation and dry mouth. Children typically tolerate the sedative effects better than adults but parents have reported changes in personality and mood amongst my patient population under the age of 7 years. Overall Cetirizine is a very effective once a day antihistamine in the class of 2nd generation antihistamines. ...Read more

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What are the side effects of zyrtec (cetirizine)?

What are the side effects of zyrtec (cetirizine)?

Minimal side effects: The side effects of zyrtec (cetirizine) are minimal compared to old antihistamines. Very small incidences of headache, sleepiness, abdominal pain, dry mouth, and nose bleeds have been reported. ...Read more

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What are the side effects of zyrtec, (cetirizine) if any?

What are the side effects of zyrtec, (cetirizine) if any?

Sleepiness: The major side-effect of zyrtec (cetirizine) is sedation - sleepiness, fatigue, and slowed reaction time. This occurs in 1 out of 10 or 1 out of 12 users. Compare to Benadryl (diphenhydramine) 1 of 3 users or clariting 1 in 50 users. Also occasionally reported are stomachache, headache, diarrhea, constipation & dry mouth & throat. In older men zyrtec can sometimes cause difficulty with urination. ...Read more

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Side-effects of cetirizine?

Side-effects of cetirizine?

A few.: Not like benadryl, (diphenhydramine) which has major anticholineric issues, it still can cause drowsiness, dry mouth. It is a very effective and highly specific h1 blocker, which reduces allergic sx. ...Read more

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Side effects of using zyrtec (cetirizine) for hives?

Side effects of using zyrtec (cetirizine) for hives?

Read PI: All medications that are available have included a package insert that describes what the medication is and its side effects. ...Read more

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What are the long-term side effects of cetirizine hydrochloride?

None: None that i'm aware of. I personally have taken it daily for >10 years without adverse reaction. ...Read more

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What are the long-term side effects of cetirizine hydrochloride? Say, taking it 6 months?

What are the long-term side effects of cetirizine hydrochloride?  Say, taking it 6 months?

None.: Cetirizine makes 10-15% of people sleepy. Other than that it is very well tolerated. It is actually a metabolite of hydroxyzine, an antihistamine that has been around for decades. ...Read more

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Any bad side effects of zyrtec (cetirizine)?

Any bad side effects of zyrtec (cetirizine)?

Sleepiness: 10% of the patients will experience sleepiness.Best time to take it is at bedtime to cut down this side effect. ...Read more

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What are the side effects of zyrtec (cetirizine) and how can I prevent them?

What are the side effects of zyrtec (cetirizine) and how can I prevent them?

Effects vs sides: The most common side effect is sedation, about 13%. Sometimes taking before bedtime helps, but some people still are affected and need a less sedating antihistamine. Refer to the drug information label for other side effects. ...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


Dr. Louis Vernacchio
395 doctors shared insights

Pseudoephedrine (Definition)

Pseudoephedrine is a decongestant which is a kind of antihistamine type drug (common ...Read more