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Doctor insights on: Fexofenadine Withdrawal

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I've been taking antihistamines for 4 years and I'm off them now for 48 hours for an appointment. What are the withdrawals for fexofenadine and cetriz?

I've been taking antihistamines for 4 years and I'm off them now for 48 hours for an appointment. What are the withdrawals for fexofenadine and cetriz?

Not much: Female on antihistamines for 4 years, now suddenly off and wants to know withdrawal symptoms. There should not be any withdrawal symptoms from stopping antihistamines. If you were taking antihistamines for allergy symptoms, your allergy symptoms will probably return. ...Read more

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Dr. Harinder Gill
354 doctors shared insights

Fexofenadine (Definition)

Fexofenadine, previously marketed under the brand name allegra, is an antihistamine similar to ...Read more


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I've been taking allegra (fexofenadine) for a few years. Now, anytime I miss a day or two, I get extremely itchy in my hands and feet. How can I prevent this withdrawal?

I've been taking allegra (fexofenadine) for a few years. Now, anytime I miss a day or two, I get extremely itchy in my hands and feet. How can I prevent this withdrawal?

MD: Hello: you need to address this complication with your doctor to have the doctor switch you to a different class of medicine. Allegra (fexofenadine) like all medicines have complications and require careful management to insure a severe reaction does not result. Best regards: mark reed, dpm www.Footpain.Org. ...Read more

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What if I overdose on fexofenadine?

Depends: Any overdose by any medication needs to be evaluated immediately. The treatment will depend upoin what is ingested, how much is injested and how it was injested. ...Read more

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Fexofenadine HCl 860 mg tablet?

Fexofenadine  HCl 860 mg tablet?

Does not exist: The highest dose in the us is 180mg, in europe they have it in 240mg, the safety was studied up to 320mg, anything higher has not been established safe. ...Read more

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Is expired allegra (fexofenadine) safe?

Expired medication: Typically, when a medication expires, it's because it loses its potency or effectiveness. There are some medications that, with time, do breakdown with time into harmful substances. Check with your pharmacist to make sure. I would not recommend taking any expired medication. ...Read more

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How fast does allegra (fexofenadine) work?

20-30 minutes: Oral antihistamines like Allegra (fexofenadine) need to be absorbed by the digestive system and distributed thru the body before they are effective--about 20-30 minutes. This lag time is usually acceptable for minor allergy symptoms. But if you have asthma, swelling in the throat, or anaphylaxis, taking a quick-acting rescue med like Epinephrine or albuterol can be life-saving. Ask your doctor for more info. ...Read more

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What if i took two allegra (fexofenadine)?

What if i took two allegra (fexofenadine)?

Avoid doing this: Allegra (fexofenadine) is sold in both 60 mg doses taken twice a day, and a 180 mg dose taken once a day. There is not good data on taking twice the dose at one time. Avoid doing it. If your allergy symptoms are not controlled with the fda recommended dosing, see an allergist. There are certain situations when i prescribe other dosing. ...Read more

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How much allegra (fexofenadine) can I take?

Allegra (fexofenadine): Hello. The normal dose for Allegra (fexofenadine) is 180 mg per day for an adult. Check with your pharmacist for other options if you feel this medication at that dose isn't helpful. There are other otc meds you could try. ...Read more

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Taking 3 allegra, (fexofenadine) will i die?

Taking three allegra (fexofenadine): Will not kill you. But, I am concerned by your question. Is your aim to harm or kill yourself? If so, please get help now. A friend or relative can take you to the nearest emergency room if you are contemplating suicide. Things can improve with help. Take care. ...Read more

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Are dephenhydromine and fexofenadine the same?

Are dephenhydromine and fexofenadine the same?

Yes and no...: Diphenhydramine is the generic form of Benadryl (diphenhydramine) and fexofenadine is the geneuc form of allegra. Both medications are type i antihistamines. Diphenhydramine is a first generation antihistamine. It is shorter acting and more sedating. Fexofenadine is a second generation antihistamine that is longer acting and typically does not cause sedation. ...Read more

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Why would allegra (fexofenadine) be prescribed?

Many reasons.: Allegra is an antihistamine which can be used for itching of the skin, nose, eyes. It is mainly used to treat allergic reactions and to relieve seasonal allergic eye and nose symptoms. It is not very effective for nasal congestion unless used with another medication such as a nasal steroid or oral decongestant. ...Read more

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Can I take allegra (fexofenadine) with singular?

Absolutely: Their mechanisms of action are totally different and even somewhat complementary. ...Read more

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Can allegra (fexofenadine) make you feel jittery?

Can allegra (fexofenadine) make you feel jittery?

Jitters with Allegra (fexofenadine): Make sure it isn't Allegra (fexofenadine)-D as the "d" part (pseudoephedrine causes jitters. Allegra (fexofenadine) and other 2nd generation antihistamines (claritin, zyrtec) don't easily go from the blood into the brain so rarely cause sedation and other nervous system problems. Jitteriness is not a listed Allegra (fexofenadine) side-effect though I have seen 1 or 2 patients who develop it with Allegra (fexofenadine) but can tolerate other antihistamies. ...Read more

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Can you take fexofenadine and loratadine together?

Can you take fexofenadine and loratadine together?

Yes: If there is sever itching then you may need to take both but i would space them out so fexofenadine would be used in the am and Loratadine at night. Even better - substitute ceterizine instead of loratadine. ...Read more

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I accidentally took 2 Allegra (fexofenadine) 180mg?

I accidentally took 2 Allegra (fexofenadine) 180mg?

No major problem: If this is a plain antihistamine with no decongestant in it,I would expect no serious problem although some minor drowsiness may occur. As,long as you're experiencing no discomfort simply let the medication dissipate. If you have any further concerns, call your physician. ...Read more

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