Compare Allegra-D vs. Sudafed

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

Treats allergy symptoms and congestion.

Allegra-D (fexofenadine / pseudoephedrine) is a combination allergy medicine that's useful if you have congestion and runny nose.

Clears your sinuses.

Sudafed (Pseudoephedrine) relieves stuffy nose, but it could keep you up at night. Don't forget your photo ID or you won't be able to buy it in the drugstore.

3.9/ 5 average rating with 1740 reviewsforSudafed
Upsides
  • Allegra-D (fexofenadine / pseudoephedrine) contains two medicines that work in different ways to help relieve multiple symptoms including nasal congestion and allergies.
  • Available without a prescription in the drugstore.
  • One of the best over-the-counter options to clear stuffy nose and help you breathe better.
  • Clears nasal congestion better than other decongestants like phenylephrine.
  • Can be helpful in relieving congestion-related headaches and pressure in your ears.
  • Available in regular and extended release forms.
Downsides
  • You must show a photo ID to purchase this medicine from behind the pharmacy counter. There's a maximum limit on how much Allegra-D (fexofenadine / pseudoephedrine) you can buy at a time.
  • Allegra-D (fexofenadine / pseudoephedrine) can have more side effects (such as increased blood pressure and difficulty sleeping) than Allegra since it has pseudoephedrine in it.
  • If you have severe high blood pressure or heart disease you can't take this medicine. If you have kidney damage, you may not be able to take Allegra-D (fexofenadine / pseudoephedrine).
  • Pseudoephedrine (a decongestant) can make your heart race or make you feel anxious and restless.
  • It can affect the quality of your sleep, so you can't take it too close to going to bed.
  • Can raise blood pressure so check with your doctor before using it if you have high blood pressure or other heart conditions.
  • Sudafed (Pseudoephedrine) isn't as effective after using it for more than 4 days straight.
  • Need to show a photo ID to buy it in the drugstore and there is a limit on how much you can buy each visit.
Used for
Dosage forms
  • Pill
  • Pill
  • Extended release
  • Liquid
No pricing information available
No pricing information available
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Reviews
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1740 reviews so far
82%
saidit'sworth it
45%
saiditworked well
6%
saidit'sa big hassle

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Side effects
10possible side effects
  • Headache
    13%
  • Trouble sleeping
    13%
  • Nausea
    7%
  • Dry Mouth
    3%
  • Indigestion
    3%
  • Throat irritation
    2%
  • Dizziness
    2%
  • Agitation
    2%
  • Back pain
    2%
  • Palpitations
    2%
See more detailed side effects
The Sudafed (Pseudoephedrine) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Driving impairment
    • Taking with alcohol
    • Taking other medicines that make you less alert
  • High blood pressure
    • History of high blood pressure
  • Heart problems
    • History of heart problems
    • Age 65 or older
  • Seizure
    • History of seizure
See more detailed risks and warnings
  • High blood pressure
    • History of high blood pressure
  • Heart problems
    • History of heart problems
    • Age 65 years or older
  • Seizures
    • History of seizures
  • Harm to fetus
    • Women of childbearing age
See more detailed risks and warnings