What is fexofenadine 120 mg used for?
Fexofenadine 120 mg is an antihistamine used to treat allergy symptoms caused by histamine. It is commonly used for:
- Allergic rhinitis (hay fever), such as sneezing, runny nose, itching, and watery eyes.
- Chronic urticaria (hives), to reduce itching and the number of hives.
How should adults take fexofenadine 120 mg?
The typical adult dose is one 120 mg tablet once daily by mouth, taken at the same time each day. Follow your prescriber’s instructions and the product label.
Avoid taking it with certain fruit juices and other products that can reduce absorption. If your medication is not working as expected, ask a pharmacist whether any of your foods or other medicines could be interfering.
How long does fexofenadine 120 mg take to work?
For many people, allergy symptom relief starts within a few hours after a dose. If you are treating seasonal allergies, it may help most when taken consistently during the allergy period. If you are treating hives, it should reduce itching and hives after the first day for some patients, but results vary.
What side effects are associated with fexofenadine 120 mg?
Common side effects can include:
- Headache
- Dizziness
- Dry mouth
- Nausea
Seek urgent care if you develop signs of an allergic reaction such as swelling of the face/lips/tongue, trouble breathing, or widespread rash.
What interactions should I watch for at the 120 mg dose?
Fexofenadine absorption can be reduced by some substances, including:
- Fruit juices such as grapefruit and orange juice (they can lower how much fexofenadine you absorb)
Also tell your clinician about all medicines you take, especially other antihistamines or allergy products, to avoid duplicate dosing.
Can children take fexofenadine 120 mg?
Fexofenadine dosing depends on age and the specific indication (allergic rhinitis vs. hives). 120 mg products are generally for older children/adults, so it’s important to use the correct strength and dosing schedule for the child. Check the package or ask a pharmacist.
When to avoid it or ask a doctor first
Talk to a clinician before using fexofenadine if you:
- Have kidney disease (dose adjustments may be needed)
- Are pregnant, trying to conceive, or breastfeeding
- Have ever had a reaction to fexofenadine or any antihistamine
If you miss a dose, what should you do?
Take the missed dose when you remember if it’s close to the time you would normally take it. If it’s almost time for the next dose, skip the missed dose and resume your schedule. Do not take two doses at once.
Sources
No source links were provided with the prompt. If you share the country/brand (e.g., Allegra 120 mg) or a link to the product labeling you’re using, I can tailor the dosing, timing, and interaction details to that exact formulation.