Skip to content
ppharmaranks
Menu
CompaniesProductsDrug classesConditionsBest by conditionTreatmentsInteraction checkerFood & medicinesWhat pharmacies payPill identifierMedicines & breastfeedingChildren’s dosage chartsDo medicines expire?Crushing & splitting pillsHow long meds take to workAlternating Tylenol & ibuprofenDrug recallsSupplementsSafety & lawsuitsGuidesA–ZHow we rate

ALLEGRA vs CLARINEX

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. ALLEGRA and CLARINEX are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

allegraclarinex

Rating

New
New

Pharmacy pays

~$7.33 /30
~$8.60 /30

Type

RX
RX

Active ingredient

FEXOFENADINE HYDROCHLORIDE
DESLORATADINE

Manufacturer

Chattem Sanofi
Schering

Dosage forms

Suspension, Capsule
Tablet

Drug class

Histamine-1 Receptor Antagonist
Histamine-1 Receptor Antagonist

Boxed warning

None
None

Half-life

about 14 hours (label: mean elimination half-life 14.4 hours)
—

Treats

Perennial Allergic Rhinitis, Urticaria
Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis, Urticaria

Get allegrahigher-rated option

Advertising disclosure: Some links are affiliate links. We may earn a commission at no extra cost to you. This never affects our independent ratings.

Get treatment online

Licensed online providers — consult & get prescribed if eligible.

SesameCompare online visit prices

Frequently asked questions

Which is cheaper, Allegra or Clarinex?

Allegra costs pharmacies less to acquire — about $7.33 vs $8.60 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Allegra and Clarinex?

Allegra contains Fexofenadine Hydrochloride, while Clarinex contains Desloratadine — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.