Compare Allegra vs. Sudafed
Head-to-head comparisons of medication uses, side effects, ratings, and more.
Allegra (fexofenadine) relieves allergy symptoms without making you feel drowsy.
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.
- 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.
- 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.
- Allegra (fexofenadine)'s effectiveness can wear off over time.
- The dose needs to be adjusted for people with kidney problems.
- 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.
- Dissolving tablet
- Extended release
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- Back Pain2%
- Stomach discomfort2%
- Pain in hands/feet2%
- Driving impairment
- Taking with alcohol
- Taking other medicines that make you less alert
- Brain damage from too much phenylalanine
- History of phenylketonuria (PKU)
- High blood pressure
- History of high blood pressure
- Heart problems
- History of heart problems
- Age 65 years or older
- History of seizures
- Harm to fetus
- Women of childbearing age