Compare Allegra D vs. Nasonex

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

Allegra D
(Pseudoephedrine / Fexofenadine)

Nasonex
(Mometasone)

Treats allergy symptoms and congestion. Allegra D (Pseudoephedrine / Fexofenadine) is a combination allergy medicine that's useful if you have congestion and runny nose.Relieves allergy symptoms. Nasonex (Mometasone) is a good first-choice treatment for stuffy and runny noses caused by allergies.
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Reviews & ratings
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Reviews for Nasonex (Mometasone)
68%
+1% vs. Allegra D (Pseudoephedrine / Fexofenadine)
38%
29% vs. Allegra D (Pseudoephedrine / Fexofenadine)
8%
8% vs. Allegra D (Pseudoephedrine / Fexofenadine)
Side effects
Allegra DNasonex
  • Back pain 2%
More Allegra D side effects »
  • Nosebleed 8%
  • Headache 4%
  • Viral infection 3%
  • Menstrual cramps 2%
  • Sinus inflammation 2%
  • Musculoskeletal pain 2%
  • Sore throat 2%
  • Coughing 1%
  • Vomiting 1%
More Nasonex side effects »
How it works
Allegra DNasonex
Allegra D (Pseudoephedrine / Fexofenadine) is a combination medicine that relieves allergy symptoms. Fexofenadine (an antihistamine) prevents allergy symptoms like runny nose, sneezing, and itching. Pseudoephedrine (a decongestant) clears your sinuses.Nasonex (Mometasone) is a topical steroid. It works directly where it's applied to help reduce swelling and inflammation in your nose.
Type of medication
Allegra DNasonex
DecongestantAntihistamine
2nd generation
Prescription or OTC
Anti-inflammatory
Corticosteroid
Prescription only
Available as
Allegra DNasonex
  • Extended release
  • Nasal spray
Used for (click to learn more)
Allegra DNasonex
Risk factors for serious side effects
Allegra DNasonex
  • Taking with alcohol
  • Taking other medicines that make you less alert
  • History of high blood pressure
  • History of heart problems
  • Age 65 or older
  • History of seizure
  • Women of childbearing age
Detailed Allegra D (Pseudoephedrine / Fexofenadine) risks & warnings »
  • Long-term use
  • Long-term use
  • Surgery or trauma to the nose or sinuses
  • Long-term use
  • Exposure to immunizable diseases (chickenpox and measles)
  • Exposure to tuberculosis
  • Long-term use
  • Taking more than recommended dose
Detailed Nasonex (Mometasone) risks & warnings »
Pregnancy category
Allegra DNasonex
CFDA pregnancy category (Weigh risks vs. benefits)

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insert
CFDA pregnancy category (Weigh risks vs. benefits)

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insert
Alcohol
No specific alcohol-related info.No specific alcohol-related info.
Food
No specific food-related info.No specific food-related info.
Kidneys and liver
  • Talk to your doctor if you have high blood pressure or kidney problems before using it.
No specific kidneys and liver-related info.
Sex
No specific sex-related info.No specific sex-related info.
Sleep
  • 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.
  • Avoid taking it close to bedtime to prevent trouble sleeping.
No specific sleep-related info.
Weight
No specific weight-related info.No specific weight-related info.
Upsides and benefits
Allegra DNasonex
  • 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.
  • First-choice medication for treating runny and stuffy noses caused by allergies. It works by reducing inflammation in the nose.
  • Because it's used directly where the inflammation is happening, it has fewer side effects than oral steroids do and has a lower chance of causing withdrawal symptoms once the medication is stopped.
  • Can be used as needed to help control symptoms in people age 13 years or older.
  • Available as a generic, which is cheaper.
Downsides and risks
Allegra DNasonex
  • 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.
  • Needs to be primed 10 times before it can be used, or re-primed if not used for more than 2 weeks.
  • Doesn't have a counter on it, so it can be hard to remember how many sprays are left (each bottle has 120 sprays).
  • Since the medicine in Nasonex (Mometasone) is a steroid, it can slow down your healing process if you've hurt your nose or had nose surgery.
Tips from our pharmacists for people taking the medication
Allegra DNasonex
  • 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.
  • Use Nasonex (Mometasone) once a day, following age-specific recommendations on how many sprays to use. Don't take more than prescribed.
  • Blow your nose before using.
  • Can cause thrush (a fungal infection) inside your nose and throat. Can also cause nosebleeds, a sore throat, and headaches.
  • Needs to be used regularly during allergy season for it to work. It can take 1 to 2 weeks for the medicine to start working fully.
  • Check with your doctor or pharmacist on how to use the nasal spray the right way.
  • Shake well before using it. Before the first use, prime the bottle by spraying it until you see a fine mist.
Learn more
More about Allegra DSide effectsReviews & ratingsAlternativesFDA package insert
More about NasonexSide effectsReviews & ratingsAlternativesFDA package insert