azelastine vs fexofenadine
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of azelastine and fexofenadine. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Astelin, Astepro
Allegra
Azelastine nasal spray is an antihistamine medicine. It helps relieve allergy and non-allergy nasal symptoms.
Fexofenadine (Allegra) is an antihistamine medicine. It helps reduce hives and relieve itching.
This medicine treats symptoms of seasonal allergies in adults and kids 5 years and older. It also treats symptoms of vasomotor rhinitis (stuffy or runny nose not caused by allergies) in adults and teens 12 years and older. It works by blocking histamine, a substance in the body that causes allergy symptoms.
This medicine treats hives and itching caused by hives. It will not stop hives or allergic skin reactions from happening. Talk to your doctor if you have questions about your condition.
Azelastine is an antihistamine. It blocks histamine, a natural substance that your body makes during an allergic reaction. By blocking histamine, azelastine helps reduce allergy symptoms like sneezing, runny nose, and itchy eyes.
Fexofenadine blocks histamine in your body. Histamine is a natural substance that causes allergy symptoms. By blocking histamine, fexofenadine reduces itching and hives.
- • Bitter taste
- • Headache
- • Sleepiness
- • Nasal burning
- • Sore throat
- • Headache
- • Fatigue
- • Nausea
- Treatment Failure 1,876
- Fatigue 1,144
- Headache 883
- Nausea 879
- Dyspnoea 836
- Headache 878
- Fatigue 858
- Nausea 778
- Pruritus 765
- Extra Dose Administered 700
Azelastine nasal spray can cause sleepiness. Be careful driving or operating machinery until you know how this medicine affects you. Avoid drinking alcohol or taking other medicines that can cause sleepiness while using this spray.
No specific warnings noted.
There is limited information about the safety of azelastine nasal spray during pregnancy. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if azelastine passes into breast milk, so talk to your doctor if you are breastfeeding.
It is not known if fexofenadine will harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if fexofenadine passes into breast milk, so talk to your doctor if you are breastfeeding.
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How to Read This azelastine vs fexofenadine Comparison
azelastine is classified in the Antihistamine (Nasal) drug class, while fexofenadine sits within the Second-Generation Antihistamine class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are available over the counter.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, azelastine has 5,618 submissions while fexofenadine has 3,979. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for azelastine or fexofenadine.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.