Compare Allegra vs. Clarinex

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Allegra (fexofenadine)

Over-the-counter

Clarinex (desloratadine)

Prescription only
Treats allergy symptoms.

Allegra (fexofenadine) relieves allergy symptoms without making you feel drowsy.

3.9/ 5 average rating with 24 reviewsforAllegra
Treats allergy symptoms.

Clarinex (desloratadine) is a good option for once-daily allergy relief. It doesn't make you feel sleepy, but you need a prescription.

Upsides
  • Allegra (fexofenadine) is effective at reducing symptoms for seasonal allergies and chronic hives without significant drowsiness, unlike Benadryl.
  • Approved for kids aged 6 months or older.
  • Allegra (fexofenadine) comes in many forms, like tablet, liquid, and quick-dissolving tablet.
  • Clarinex (desloratadine) relieves allergy symptoms like sneezing, runny nose, congestion, hives, or itchy skin.
  • Preferred for older people since it causes little to no drowsiness compared to other antihistamines like diphenhydramine (Benadryl).
  • Works faster than other non-drowsy antihistamines like loratadine (Claritin).
  • Side effects are rare and usually mild.
  • Available as a liquid or fast-dissolving tablet for people who don't like swallowing pills.
Downsides
  • Allegra (fexofenadine)'s effectiveness can wear off over time.
  • The dose needs to be adjusted for people with kidney problems.
  • May not work as fast as the other antihistamines that make you sleepy (like Benadryl).
  • Not a good medication for pregnant women to take.
Used for
Dosage forms
  • Pill
  • Dissolving tablet
  • Liquid
  • Pill
  • Dissolving tablet
  • Liquid
Price
No pricing information available
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Reviews
24 reviews so far
79%
saidit'sworth it
63%
saiditworked well
0%
saidit'sa big hassle

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Side effects
4possible side effects
  • Dizziness
    2%
  • Back Pain
    2%
  • Stomach discomfort
    2%
  • Pain in hands/feet
    2%
See more detailed side effects
15possible side effects
  • Upper respiratory tract infections
    21%
  • Diarrhea
    20%
  • Fever
    12%
  • Irritability
    12%
  • Coughing
    11%
  • Sleepiness
    9%
  • Inflammation of airways
    6%
  • Ear infection
    6%
  • Vomiting
    6%
  • Decreased appetite
    5%
  • Throat inflammation
    5%
  • Inability to sleep
    5%
  • Runny nose
    5%
  • Redness and swelling
    3%
  • Nausea
    3%
See more detailed side effects
Risks and risk factors
  • Driving impairment
    • Taking with alcohol
    • Taking other medicines that make you less alert
  • Brain damage from too much phenylalanine
    • History of phenylketonuria (PKU)
See more detailed risks and warnings
  • Serious allergic reactions
See more detailed risks and warnings