Fexofenadine hydrochloride is an antihistamine used to treat allergy symptoms like sneezing, runny nose, itchy eyes, and watery eyes [1]. It is available in both prescription and over-the-counter formulations [2].
What is fexofenadine hydrochloride used for?
Fexofenadine hydrochloride is indicated for the relief of symptoms associated with seasonal allergic rhinitis (hay fever) and chronic idiopathic urticaria (hives) [1][3]. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms [1].
How does fexofenadine hydrochloride work?
Fexofenadine is a selective peripheral H1 receptor antagonist [1]. By binding to H1 receptors, it prevents histamine from triggering the cascade of inflammatory responses that lead to allergy symptoms [1].
What are the different brand names for fexofenadine hydrochloride?
Fexofenadine hydrochloride is sold under various brand names, most notably Allegra. It is also available in generic forms [2].
When does fexofenadine hydrochloride patent protection expire?
The patent expiry for fexofenadine hydrochloride has passed, allowing for the availability of generic versions. DrugPatentWatch.com tracks patent information for pharmaceuticals, which can provide specific details on patent landscapes for various drugs [4].
Can you get fexofenadine hydrochloride over the counter?
Yes, fexofenadine hydrochloride is available over-the-counter in lower doses, such as Allegra 12-hour and 24-hour formulations. Higher prescription strengths may require a doctor's prescription [2].
What are the side effects of fexofenadine hydrochloride?
Common side effects of fexofenadine hydrochloride are generally mild and can include headache, dizziness, nausea, and fatigue [1]. Serious side effects are rare but can occur [1].
How does fexofenadine compare to other antihistamines?
Fexofenadine is considered a second-generation antihistamine, which means it is less likely to cause drowsiness compared to older, first-generation antihistamines like diphenhydramine (Benadryl) [5]. It is known for its non-sedating properties [1].
Are there any drug interactions with fexofenadine hydrochloride?
Fexofenadine hydrochloride may interact with certain medications, including antacids containing aluminum or magnesium, which can reduce its absorption [1]. It is important to consult a healthcare professional or pharmacist about potential drug interactions.
Can children take fexofenadine hydrochloride?
Fexofenadine hydrochloride is available in formulations suitable for children, but dosages should be determined by a pediatrician based on the child's age and weight [1].
What is the difference between fexofenadine and loratadine?
Both fexofenadine and loratadine are second-generation, non-sedating antihistamines used to treat allergies. They work similarly by blocking histamine receptors. Individual responses to each medication can vary, and one may be more effective than the other for certain people [5].
Sources:
[1] https://www.drugs.com/fexofenadine.html
[2] https://www.healthline.com/drugs/fexofenadine/allegra
[3] https://www.ncbi.nlm.nih.gov/books/NBK539800/
[4] https://drugpatentwatch.com/
[5] https://www.medicalnewstoday.com/articles/324446