Allegra Hives 24hr

openFDA label record#

This page contains supplementary openFDA label data. For the canonical label presentation, use the corresponding DailyMed Structured Product Label.

Verified complete openFDA source JSON (canonical bytes are SHA-256 checked before publication)

Brand name
Allegra Hives 24hr
Generic name
FEXOFENADINE HYDROCHLORIDE
Manufacturer
Chattem, Inc.
Product type
HUMAN OTC DRUG
SPL set ID
490b4c5f-448b-4563-928b-837117b59b9f
SPL ID
942f38c8-c652-49b9-b98f-e8edcf66db1c
Version
10
Effective date
2026-01-12
Source export date
2026-08-08
Source partition
12
Source file
https://download.open.fda.gov/drug/label/drug-label-0012-of-0014.json.zip
Source object key
raw/openfda/drug-label/2026-08-08/08ac2ecb70ff33d04555f409cd5f90c8dfd623a13d56debe804299dfaddb62fe/drug-label-0012-of-0014.json.zip
Source manifest SHA-256
b39f3b00ad50d2e1b32aaf429248c6081e8799b35bce715b4fccb8cfa1ac4546
Import run
20260810T161303Z
Imported at
2026-08-10 17:59:48
Harmonized routes table
Harmonized routes
ORAL

Warnings cross-check#

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Warnings sections page 1 of 1 · 1 matching rows.

warnings

Warnings Severe Allergy Warning: Get emergency help immediately if you have hives along with any of the following symptoms: ■ trouble swallowing ■ dizziness or loss of consciousness ■ swelling of tongue ■ swelling in or around mouth ■ trouble speaking ■ wheezing or problems breathing ■ drooling These symptoms may be signs of anaphylactic shock. This condition can be life threatening if not treated by a health professional immediately . Symptoms of anaphylactic shock may occur when hives first appear or up to a few hours later. Not a Substitute for Epinephrine. If your doctor has prescribed an epinephrine injector for “anaphylaxis” or severe allergy symptoms that could occur with your hives, never use this product as a substitute for the epinephrine injector. If you have been prescribed an epinephrine injector, you should carry it with you at all times. Do not use ■ to prevent hives from any known cause such as: ■ foods ■ insect stings ■ medicines ■ latex or rubber gloves because this product will not stop hives from occurring. Avoiding the cause of your hives is the only way to prevent them. Hives can sometimes be serious. If you do not know the cause of your hives, see your doctor for a medical exam. Your doctor may be able to help you find a cause. ■ if you have ever had an allergic reaction to this product or any of its ingredients. Ask a doctor before use if you have ■ kidney disease. Your doctor should determine if you need a different dose. ■ hives that are an unusual color, look bruised or blistered ■ hives that do not itch When using this product ■ do not take more than directed ■ do not take at the same time as aluminum or magnesium antacids ■ do not take with fruit juices (see Directions) Stop use and ask a doctor if ■ an allergic reaction to this product occurs. Seek medical help right away. ■ symptoms do not improve after 3 days of treatment ■ the hives have lasted more than 6 weeks If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.