Voltaren vs Allegra: side-by-side comparison
Voltaren (Schmerzmedikamente) and Allegra (Allergie und Antihistaminika) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Voltaren | Allegra |
|---|---|---|
| Active ingredient | Diclofenac | Fexofenadine |
| Manufacturer | Novartis | Sanofi |
| Class | Schmerzmedikamente | Allergie und Antihistaminika |
| Strengths | 25mg, 50mg, 75mg, 100mg | 30mg, 60mg, 120mg, 180mg |
| Forms | tablet, delayed-release tablet, topical gel, suppository | tablet, oral suspension, orodispersible tablet |
What's the same
Voltaren and Allegra are used in very different patients, and the points in common are limited. The main shared element is that both meet regulatory standards for efficacy and safety and benefit from pharmacist oversight.
Key differences
Voltaren belongs to Schmerzmedikamente while Allegra belongs to Allergie und Antihistaminika. Indications, mechanisms and target populations differ. The comparison is most useful when a clinician has mentioned both medications and the patient wants to understand where each fits.
Mechanism and action
Voltaren: Diclofenac hemmt reversibel die Cyclooxygenase-Enzyme COX-1 und COX-2, mit etwas stärkerer Selektivität für COX-2 als Ibuprofen und Naproxen. Allegra: Fexofenadin blockiert selektiv die peripheren H1-Histaminrezeptoren und antagonisiert die Wirkungen von Histamin auf Vasodilatation, Kapillarpermeabilität, sensorische Nervenendigungen und glatte Muskulatur.
When Voltaren is preferred
Voltaren ist bei Erwachsenen zur Behandlung von Arthrose, rheumatoider Arthritis, ankylosierender Spondylitis, akuten muskuloskelettalen Schmerzen, postoperativen Schmerzen, primärer Dysmenorrhoe, akuter Migräne und Ureterkolik zugelassen.
When Allegra is preferred
Allegra ist bei Erwachsenen und Kindern zur Behandlung der saisonalen allergischen Rhinitis und der chronischen idiopathischen Urtikaria zugelassen.
Häufig gestellte Fragen
Is Voltaren or Allegra better? ▾
Voltaren and Allegra are not interchangeable — they treat different conditions. Asking which is "better" is meaningful only when a clinician has weighed both for the same specific clinical scenario.
Can I switch from Voltaren to Allegra? ▾
Switching between Voltaren and Allegra is rarely an appropriate decision since they belong to different classes and treat different conditions. The real question is usually whether the diagnosis calls for one medication or the other — which the prescriber resolves.
Do Voltaren and Allegra have the same side effects? ▾
No — they belong to different classes and have distinct side-effect profiles. Each medication has its own prescribing information.
More Voltaren comparisons
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