Allegra vs. Nasacort

See how Allegra and Nasacort compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Allegra is an oral antihistamine taken once or twice daily, while Nasacort is a once-daily nasal spray that targets inflammation directly in the nose.

  • Allegra is FDA-approved for seasonal allergies and chronic hives, but Nasacort only treats seasonal and perennial nasal allergy symptoms.

  • Nasacort often needs several days of regular use to reach full effect, while Allegra can start relieving symptoms within about an hour.

Allegra vs. Nasacort Drug Summary

Allegra

Allegra (fexofenadine) is a second-generation, non-sedating antihistamine used to relieve seasonal allergy symptoms and chronic hives. It comes as a tablet, an orally disintegrating tablet, or an oral suspension, taken once or twice daily depending on age and strength.

Nasacort

Nasacort (triamcinolone acetonide) is a corticosteroid nasal spray that reduces inflammation in the nasal passages to relieve seasonal and perennial allergy symptoms. It's sprayed into each nostril once a day and is available over the counter.

Allegra vs. Nasacort Side Effects

Allegra

Most common
Headache (≥2%)
Back pain (≥2%)
Dizziness (≥2%)
Stomach discomfort (≥2%)

Nasacort

Most common
Headache (1% to 10%)
Pharyngitis (1% to 10%)
Epistaxis (1% to 10%)
Flu syndrome (1% to 10%)

Allegra vs. Nasacort Dosage

Allegra

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 30 mg twice daily At the start
Maximum dose 60 mg once daily If needed
Dose changes 3 increases As tolerated

Nasacort

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 110 mcg once daily At the start
Maximum dose 220 mcg once daily If needed
Dose changes 1 increase As tolerated

Allegra vs. Nasacort Indications

Allegra

Allegra is approved to relieve symptoms of seasonal allergic rhinitis, like sneezing, runny nose, and itchy eyes. It's also approved to treat chronic idiopathic urticaria, or hives without a known cause, in adults and children.

  • Relief of seasonal allergic rhinitis symptoms

  • Treatment of chronic idiopathic urticaria (hives)

  • Approved for ages 6 months and up, by formulation

  • Available as tablet, ODT, or oral suspension

Nasacort

Nasacort is approved to relieve nasal symptoms of seasonal and perennial allergic rhinitis, such as congestion, sneezing, and runny nose. It is not approved for asthma or for children under 2 years old.

  • Nasal symptoms of seasonal allergic rhinitis

  • Nasal symptoms of perennial allergic rhinitis

  • Approved for ages 2 and older

  • Not approved for asthma

Allegra vs. Nasacort Pros and Cons

Allegra

Allegra offers fast, non-sedating relief in pill form and is the only one of the two approved for chronic hives. It won't cause the nasal irritation associated with steroid sprays, but it doesn't target nasal congestion or inflammation as directly as Nasacort does.

Pros

  • Also approved to treat chronic hives

  • Starts working within about an hour

  • Oral tablet, ODT, or liquid, no nasal spray needed

Cons

  • Doesn't directly reduce nasal inflammation or congestion

  • Higher-strength dosing needs twice-daily tablets for some ages

  • ODT formulation contains phenylalanine

Nasacort

Nasacort delivers a corticosteroid directly to nasal tissue, often providing stronger relief for congestion than an oral antihistamine. It is dosed once daily and sold over the counter, but it needs consistent daily use to build full effect and carries steroid-specific risks.

Pros

  • May relieve nasal congestion more effectively than a pill

  • Once-daily spray, available over the counter

  • Treats both seasonal and perennial allergy symptoms

Cons

  • Not approved for chronic hives

  • Takes days of regular use to reach full effect

  • Carries steroid risks: septal perforation, slowed growth in kids

Common Symptoms and Related Diseases You Can Explore

Explore a range of common symptoms the Doctronic Symptom Checker can help you understand.