Prescription or OTCLower-cost generic available

Allegra D

(Pseudoephedrine / Fexofenadine)

  • Extended release
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Treats allergy symptoms and congestion.

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Prescription or OTCLower-cost generic available

Our pharmacists’ bottom line

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

  • Available without a prescription in the drugstore.
  • It has two medications that work in different ways to help relieve nasal symptoms.
  • The antihistamine (fexofenadine) is useful for relieving itchy eyes, runny nose, or constant sneezing.
  • The decongestant (pseudoephedrine) is very good at relieving congestion.
  • Has more side effects than Allegra since it has pseudoephedrine in it.
  • The antihistamine (fexofenadine) can cause dizziness, drowsiness, dry eyes/mouth, and constipation.
  • The decongestant (pseudoephedrine) can make your blood pressure higher and can make it harder to sleep.
  • You must show a photo ID to buy this from behind the pharmacy counter. There's a maximum limit on how much you can buy in the pharmacy at a time.

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Side effects for Allegra D (Pseudoephedrine / Fexofenadine)

From clinical trials of Allegra D / Seasonal allergies (180 mg) ( 576)

  • HeadacheHeadache11% for Allegra D vs.8% for placebo
  • Ear, nose, or throat infectionEar, nose, or throat infection3% for Allegra D vs.3% for placebo
  • Back painBack pain3% for Allegra D vs.1% for placebo

What to expect when you take Allegra D (Pseudoephedrine / Fexofenadine)

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Tips from our pharmacists
  • It works best if you have nasal congestion and a runny nose.
  • Take on an empty stomach, 1 hour before eating or 2 hours after eating.
  • Shouldn't be used in kids younger than 12 years old.
  • Avoid taking it close to bedtime to prevent trouble sleeping.
  • Can cause dizziness, headache, or a fast heartbeat.
  • Talk to your doctor if you have high blood pressure or kidney problems before using it.
  • If symptoms get worse or you need to use it for more than a few weeks, talk with your doctor.

Risks and Warnings for Allegra D (Pseudoephedrine / Fexofenadine)

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    • Higher risk if:
    • Taking with alcohol
    • Taking other medicines that make you less alert

    Allegra D (Pseudoephedrine / Fexofenadine) can lowers your ability to focus, think, and react. Be careful and avoid activities that require you to be alert, such as driving a car or operating machinery, until you know how this medication affects you.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Allegra D (Pseudoephedrine / Fexofenadine)

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The FDA category for this medication is C. It is advised that you: Weigh risks vs. benefits
Pregnancy
Kidneys & liver
  • Tips from our pharmacists
  • Talk to your doctor if you have high blood pressure or kidney problems before using it.
Sleep
  • Upsides and downsides from our pharmacists
  • The antihistamine (fexofenadine) can cause dizziness, drowsiness, dry eyes/mouth, and constipation.
  • The decongestant (pseudoephedrine) can make your blood pressure higher and can make it harder to sleep.
  • Tips from our pharmacists
  • Avoid taking it close to bedtime to prevent trouble sleeping.