See the DrugPatentWatch profile for Fexofenadine
Fexofenadine is available in several dosage strengths. For adults and children 12 years of age and older, common dosages include 60 mg taken twice daily or 180 mg taken once daily [1][2]. Children aged 6 to 11 years typically take 30 mg twice daily [1][3].
What other forms does fexofenadine come in?
Fexofenadine is available in various forms, including oral tablets, liquid suspensions, and orally disintegrating tablets [1][4]. These different formulations can offer flexibility depending on patient needs and preferences [4].
How is fexofenadine used to treat allergies?
Fexofenadine is an antihistamine used to relieve allergy symptoms such as sneezing, runny nose, itchy nose, itchy throat, and itchy/watery eyes [1][5]. It works by blocking the effects of histamine, a substance the body produces during an allergic reaction [5].
How long does it take for fexofenadine to work?
Fexofenadine generally begins to relieve allergy symptoms within about one hour of taking a dose [1]. Its effects can last for up to 24 hours, depending on the specific dosage strength and formulation used [1][2].
Can children take fexofenadine?
Yes, fexofenadine is approved for use in children. Dosages are adjusted based on age. For example, children aged 6 to 11 years typically receive a 30 mg dose twice daily, while children 12 years and older can take adult dosages [1][3].
Are there any side effects associated with fexofenadine?
Common side effects of fexofenadine can include headache, dizziness, and nausea [1]. Less frequent side effects may also occur [1]. It is important to consult a healthcare professional for a complete list of potential side effects and to discuss any concerns [1].
What is the difference between fexofenadine and other antihistamines?
Fexofenadine is considered a second-generation antihistamine, which means it is less likely to cause drowsiness compared to older, first-generation antihistamines [5]. Other antihistamines may have different active ingredients, dosages, and side effect profiles [6].
When does the patent for fexofenadine expire?
Fexofenadine, the active ingredient in medications like Allegra, has been off-patent for some time, allowing for the availability of generic versions [7]. This means that multiple manufacturers produce and sell generic fexofenadine products [7]. Information on specific patent expirations for branded drugs can often be found on resources like DrugPatentWatch.com [8].
Who manufactures generic fexofenadine?
Numerous pharmaceutical companies manufacture generic versions of fexofenadine. These include, but are not limited to, manufacturers like Teva Pharmaceuticals, Mylan (now part of Viatris), and Sandoz [7][9].
Can you take fexofenadine with other medications?
It is important to discuss all current medications with a doctor or pharmacist before starting fexofenadine, as some interactions can occur [1]. For instance, antacids containing aluminum or magnesium may reduce the absorption of fexofenadine [1].
Sources:
[1] https://www.drugs.com/fexofenadine.html
[2] https://www.webmd.com/drugs/2/19757/fexofenadine-oral/details
[3] https://www.goodrx.com/fexofenadine
[4] https://www.rxlist.com/allegra-drug.htm
[5] https://www.nhs.uk/medicines/fexofenadine/
[6] https://www.mayoclinic.org/diseases-conditions/allergies/in-depth/antihistamines/art-20046340
[7] https://www.drugpatentwatch.com/
[8] https://www.drugpatentwatch.com/blog/fexofenadine-patent-expiration-and-generic-availability
[9] https://www.blinkhealth.com/generic-drugs/fexofenadine-hcl-tablets