Doctor insights on:
How Long Does Allegra Stay In Your System
Antihistamines: The antihistamines Allegra (fexofenadine), Claritin (loratadine), and zyrtec (cetirizine) can last in your body for more than a week. Most allergists want these medications discontined for a week before they perform skin testing. Some persons are 'slow-metabolizers' and these drugs can be in your system much longer. ...Read more
Allegra (fexofenadine): Needs about 45 minutes to start working and wears off within a day or 2, so you need to take it daily for maximum effect. ...Read more
How much allegra is safe on a daily basis? My system needs a break from claritin (loratadine) and zyrtec apparently, but 1 allegra is not working fully.
Does allegra (fexofenadine) 24 hours (not with d) surpress your immune system? Can i get blood work (cbc w/diff) done while on allegra (fexofenadine) and have it be accurate?
No: Allegra (fexofenadine) is an otc non-sedating antihistamine and as such down regulates the release of histamine from mast cells in the tissue or decreases the effect of histamine that is released. I do not think it would significantly suppress the immune system which is primarily lymphocyte function. You can get blood work. The only thing, you can not do is get skin testing for allergies while on this drug. ...Read more
Read the label: There is considerable debate about the accuracy of label expiration dates. However, as a general rule, it is best to adhere to what the label states is the expiration date. This is especially true of liquid medication. ...Read more
How long does it take for allegra (fexofenadine) 24hr to start working? Does not include pseudophedrine.
Can I take more than one Allegra (fexofenadine) 180 24 hour tablet per day? For how long can I take this?
Yes: You can for a day or two, depending on why you need it for, if longer you need a doctor to look at you, you might need additional/different medicine, an allergist can help, check aaaai.org or acaai.org for an allergist in your area, good luck, ...Read more
Hello Dr.my boyfriend just discovered that he is allergic to our new kitten , can Allegra (fexofenadine) be taken everyday to help symptoms? Is it a long term fix
Cat allergy: Greetings. Yes, Allegra (fexofenadine) can be used regularly for a fixed allergic exposure. Other medications could be added as needed. Since he was allergy tested, was he highly allergic? Does he have asthma? Is he allergic to other triggers? All these questions are important to see what might be best. Even allergy shot desensitization may be helpful. Follow up with your Allergist if Allegra (fexofenadine) isn't working. ...Read moreSee 1 more doctor answer
Forever: You can take it indefinitely at the recommended dose. ...Read more
How long do I have to wait to take Allegra (fexofenadine) after I have taken an antibiotic? Thank you
How long should I keep taking Flonase and allegra (fexofenadine) and do they negatively impact each other at all?
Depends: In general, these medications are safe to take over a long period of time, and actually work together to treat symptoms associated with allergic rhinitis. However, if you have been on these medicines for a while, i would recommend seeing an allergist for more definitive treatment options. ...Read more
Long term: Allegra (fexofenadine) is a new generation, non-drowsy antihistamine with a good safety profile. In general antihistamines as a class have been around for decades and long term use has not been associated harmful side effects. Most clinical trials for safety are 1 year, but practically speaking, Allegra is safe for ongoing use. ...Read more
Allergy: Yes you can take it every day. There should be no long term effects ...Read more
I accidently took 2 24hr Allegra d how long will it stay in ur body? i been having side effects for over a week.
1-3 days at most: If you are having side effects after one week since taking this dose then there must be another explanation for your symptoms. Try asking another question entering these persistent symptoms or you could see your regular doctor for an explanation. ...Read more
If i ignore my allergy symptoms, will they become worse over time? I have them all year long. Which is the best med for relief, allegra (fexofenadine)? I'm 35.
See below: Allergy symptoms do not necessarily become worse with time. The best med is the one that works. Loratidine, fexofenadine and Cetirizine are all good meds. You may benefit from some targeted therapy on top of this. Maybe additional topical meds for your skin, nose, eyes or lungs depending on your symptoms. ...Read more
My skin has been itching from quite a long time. I have takena lot of medicines but could not find a permanent fix. I took cetrizine and allegra (fexofenadine) 180 for over a year. What should I do?
Hive treatment: Hives can be acute, lasting less than 6 weeks or chronic lasting greater than 6 weeks, (possibly even for years). Antihistamines might control hives but could be needed long-term. Try stopping daily antihistamines once every month for a few days to see if they are still needed. See an allergist to help find the underlying cause if your pcp fails to discover a trigger. ...Read more
Can I take 24 hour Allegra, (fexofenadine) everyday for a long time? I feel like without it my allergies get really bad no matter what season it is.
Yes: You can. Without DETAILS about your "allergies" no further comment is possible. ...Read more
- Talk to a doctor live online for free
- How long does allegra stay in system when drug test?
- Levonorgestrel how long does it stay in your system
- How long does allergen stay in your system?
- Ask a doctor a question free online
- How long does marijauna stay in your system?
- How long does marijuna stay in your system?
- How long does oxycontin stay in your system?
- How long does cannabis stay in your system?
- Talk to an allergist online for free