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What is Allegra?

Allegra is the brand name of fexofenadine, an antihistamine. In February 2010, fexofenadine was approved for use over-the-counter without a prescription.

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Do oral antihistamines have side effects?
Dr. Daniel R. Spogen, MDDr. Daniel R. Spogen, MD
Oral antihistamines have side effects, including dry mouth and tiredness. The most commonly used sec...
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What is a decongestant?
Donna Hill Howes, RNDonna Hill Howes, RN
Decongestants are available as pills, nasal sprays, or drops. They are meant for short-term use only...
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How can I explain anesthesia to a child?
Rocky Mountain Hospital for Children at P/SLRocky Mountain Hospital for Children at P/SL
Children may have concerns about anesthesia before surgery. You can explain to them that there are n...
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Do decongestants have any side effects?
Donna Hill Howes, RNDonna Hill Howes, RN
Side effects may include headaches, nausea, dizziness, nervousness, insomnia, tremor, elevated blood...
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.