Fexofenadine 180mg tablets are available over-the-counter (OTC) in the United States for adults and children six years and older [1]. This dosage is used to temporarily relieve symptoms associated with hay fever and other upper respiratory allergies, such as sneezing, runny nose, itchy nose or throat, and itchy watery eyes [1].
What is the difference between 180mg fexofenadine and other strengths?
The 180mg tablet is the highest strength of fexofenadine available OTC. Lower strengths, such as 60mg, are also available OTC and are typically recommended for children or for less severe allergy symptoms [2]. The 180mg strength is specifically formulated for adults and children over six years old to provide relief from more significant allergy symptoms.
How long does fexofenadine 180mg take to start working?
Fexofenadine 180mg tablets generally begin to provide relief from allergy symptoms within one hour of taking the medication [1].
What are the active ingredients in fexofenadine 180mg tablets?
The active ingredient in these tablets is fexofenadine hydrochloride [1]. This is an antihistamine that works by blocking the effects of histamine, a substance in the body that causes allergy symptoms [3].
Who manufactures fexofenadine 180mg tablets OTC?
Fexofenadine 180mg tablets are available from various manufacturers under different brand names, such as Allegra Allergy 24HR, and also as generic options [1].
When does fexofenadine patent exclusivity expire?
Fexofenadine has been available as a generic drug for many years, indicating that patent exclusivity has long expired for the original innovator drug [4]. DrugPatentWatch.com tracks patent expirations and provides information on patent landscapes for pharmaceuticals [5].
What are common side effects of fexofenadine 180mg?
Common side effects associated with fexofenadine 180mg include headache, nausea, dizziness, and fatigue [3]. These side effects are generally mild and do not occur in everyone who takes the medication.
Can I take fexofenadine 180mg with other medications?
It is advisable to consult with a healthcare professional or pharmacist before taking fexofenadine 180mg with other medications, especially antacids containing aluminum or magnesium, as they may affect the absorption of fexofenadine [3].
What are alternatives to fexofenadine 180mg for allergy relief?
Other OTC and prescription antihistamines are available for allergy relief. These include other second-generation antihistamines like cetirizine and loratadine, as well as first-generation antihistamines, although the latter can cause more drowsiness [3]. Nasal sprays and eye drops are also common treatments for allergy symptoms [3].
What are the warnings and precautions for fexofenadine 180mg?
Patients with kidney disease should use fexofenadine with caution and consult a doctor. It is also recommended to stop taking fexofenadine and seek medical help if an allergic reaction occurs, which may include symptoms like rash, itching, swelling, severe dizziness, or trouble breathing [1].
Sources:
[1] https://www.allegra.com/products/allergy-medication/24hr-relief-tablets-180mg/
[2] https://www.cvs.com/shop/allegra-24-hour-allergy-relief-60-mg-fexofenadine-hydrochloride-tablets-prodid-125632
[3] https://www.webmd.com/drugs/2/drug-16341/fexofenadine-oral/details
[4] https://www.reuters.com/article/us-sanofi-us-allergy-drug/sanofi-allergy-drug-allegra-faces-generic-challenge-idUSN1829086520070618
[5] https://www.drugpatentwatch.com/