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Fexofenadine Hcl

Fexofenadine HCl

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What is Fexofenadine Hcl?

Fexofenadine is a medication used to relieve allergy symptoms such as runny nose, sneezing, and itchy eyes. It can also help with itching and redness from hives. Your doctor will determine the right dose for you.

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What is Fexofenadine Hcl ?

Fexofenadine is a medication used to relieve allergy symptoms such as runny nose, sneezing, and itchy eyes. It can also help with itching and redness from hives. Your doctor will determine the right dose for you.

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Call your doctor if your symptoms do not improve or if they get worse.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease or a condition called phenylketonuria (PKU).
  • This medicine may make you dizzy or drowsy. Do not drive or doing anything else that could be dangerous until you know how this medicine affects you.
Is fexofenadine (Allegra) the same as Zyrtec or Claritin?

No, but they are close relatives. Fexofenadine (Allegra), cetirizine (Zyrtec), and loratadine (Claritin) are all second-generation, non-drowsy antihistamines that relieve allergy symptoms in a similar way. They are different medicines, and some people respond better to one than another. Of the three, cetirizine is slightly more likely to cause drowsiness in some people.

Does fexofenadine make you drowsy?

Fexofenadine is a second-generation, non-sedating antihistamine, so at recommended doses it is much less likely to cause drowsiness than older allergy medicines. Most people tolerate it very well. The most common side effects are headache, dizziness, and diarrhea rather than sleepiness.

Why shouldn't you take fexofenadine with fruit juice?

Apple, orange, and grapefruit juices reduce how much fexofenadine your body absorbs, which can make it less effective. Take fexofenadine with plain water instead, and avoid these juices around the time of your dose.

How long does it take for fexofenadine to start working?

Fexofenadine is taken to relieve allergy symptoms and hives. For best results, take it with water rather than fruit juice and follow the dosing on the label. If your symptoms do not improve, talk with your pharmacist or provider. This is general information and not medical advice.

Can you take fexofenadine every day long term?

Many people use fexofenadine daily during allergy season or to manage ongoing hives, and it is generally very well tolerated with no boxed warning. If you have kidney problems your dose may need to be adjusted. Follow the label and check with your provider before using it long term, especially for children.

How much does Fexofenadine HCl 100 Tablets cost without insurance?
The price of Fexofenadine HCl 100 Tablets without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save 60–90% off retail prices with a free Rx.com coupon.
What are the common side effects of Fexofenadine HCl 100 Tablets?
Common side effects of Fexofenadine HCl 100 Tablets may include: Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Fexofenadine HCl 100 Tablets?
Generic versions may be available for Fexofenadine HCl 100 Tablets. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Fexofenadine HCl 100 Tablets on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Fexofenadine HCl 100 Tablets?
The cheapest pharmacy for Fexofenadine HCl 100 Tablets depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Fexofenadine HCl 100 Tablets near you.

Fexofenadine Hcl Coupons & Prices

Fexofenadine HCl

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Fexofenadine Hcl Bottle — prescription drug image
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Fexofenadine Hcl 100 tablets (0.1)
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Fexofenadine Hcl prices by dosage

Lowest cash price with a free Rx.com coupon vs. the average retail price.

Dosage Quantity Retail price Rx.com price
1gm of · Bottle 30 $784.22
10 tablets · Bottle 10 $16.66 $8.46
20 tablets · Bottle 20 $28.08 $10.71
30 tablets · Bottle 30 $33.00 $9.75
40 tablets · Bottle 40 $25.27 $11.76
45 tablets · Bottle 90 $53.08 $13.23
55 tablets · Bottle 110 $20.54
60 tablets · Bottle 30 $42.12 $13.31

Cash prices near ZIP 77433; updated regularly. Actual pharmacy price may vary.

Looking for a fexofenadine HCl coupon? Fexofenadine hydrochloride is the non-drowsy, second-generation antihistamine sold over the counter as Allegra and its generics. It relieves seasonal allergy symptoms such as runny nose, sneezing, and itchy, watery eyes, and it also treats hives. Even though it is available without a prescription, some pharmacies price it lower when you use an Rx.com coupon or when your provider writes it as a prescription. Enter your ZIP above to see today's price at pharmacies near you.

What is fexofenadine HCl and how does it work?

Fexofenadine hydrochloride is a second-generation (non-sedating) H1 antihistamine. It blocks histamine, the natural chemical your body releases during an allergic reaction, which is what causes sneezing, a runny nose, and itchy, watery eyes. It is best known by the brand names Allegra, Allegra Allergy, Children's Allegra, and Allegra ODT (orally disintegrating tablets).

Doctors and pharmacists use fexofenadine for two main purposes: relief of seasonal allergic rhinitis (hay fever) symptoms in adults and children 2 years and older, and treatment of ongoing skin itching and hives (chronic idiopathic urticaria) in patients as young as 6 months. It was originally an FDA-approved prescription medicine and is now widely sold over the counter.

How to save on fexofenadine HCl with an Rx.com coupon

Fexofenadine is available over the counter, but that does not always mean it is cheapest off the shelf. Prices vary widely by pharmacy and package size, and in some cases the cost is lower with an Rx.com coupon or when your provider writes it as a prescription. Because a generic is available, you can often find the same fexofenadine hydrochloride for less than the brand-name Allegra.

To find your price, enter your ZIP above to see today's cost at pharmacies near you, then show the Rx.com coupon at the counter. The maker of Allegra also lists its own offers on its official website (allegra.com); those terms vary and are separate from the Rx.com coupon. Compare both to see which is lower for the package size you need.

Fexofenadine vs. other allergy medicines

Fexofenadine is one of several non-drowsy, second-generation antihistamines. The main alternatives work in a similar way but differ slightly in how likely they are to cause drowsiness and how they are dosed:

  • cetirizine (Zyrtec) — effective but slightly more likely to cause drowsiness in some people.
  • loratadine (Claritin) — another once-daily, non-sedating option.
  • levocetirizine (Xyzal) — a close relative of cetirizine.
  • desloratadine (Clarinex) — a close relative of loratadine.
  • allegra-d — fexofenadine combined with a decongestant (pseudoephedrine) for added nasal congestion relief.

Which one is best is a personal choice; some people respond better to one antihistamine than another. Compare prices for each above and talk with your pharmacist or provider if you are unsure. This is general information, not medical advice.

Safety and how to take fexofenadine HCl

Fexofenadine has no boxed warning and is generally very well tolerated and non-sedating at recommended doses. The most common side effects are headache, dizziness, and diarrhea, along with nausea or vomiting in children. Rare hypersensitivity reactions such as rash, swelling, or trouble breathing are a medical emergency and need immediate care.

A few practical tips: do not take fexofenadine with fruit juices (apple, orange, or grapefruit), because they reduce how much of the drug your body absorbs and can make it work less well; take it with plain water instead. Antacids that contain aluminum or magnesium can also lower absorption, so separate the two doses by a couple of hours. If you have kidney problems, your dose may need to be adjusted. This is general information and not a substitute for medical advice; follow the label and ask your provider or pharmacist about your specific situation.

Sources & accuracy

This Fexofenadine Hcl information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Fexofenadine Hcl on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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