Propecia vs Viagra Professional: side-by-side comparison
Propecia (Androgenetische Alopezie bei Männern und Frauen) and Viagra Professional (Erektile Dysfunktion (ED)) belong to different therapeutic classes and are rarely interchangeable. This page compares the medications' purposes, mechanisms and the situations where each is used.
| Property | Propecia | Viagra Professional |
|---|---|---|
| Active ingredient | Finasteride | Sildenafil Citrate |
| Manufacturer | Merck | Pfizer |
| Class | Androgenetische Alopezie bei Männern und Frauen | Erektile Dysfunktion (ED) |
| Strengths | 1mg | 100mg |
| Forms | tablet | sublingual tablet |
What's the same
Propecia and Viagra Professional 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
Propecia belongs to Androgenetische Alopezie bei Männern und Frauen while Viagra Professional belongs to Erektile Dysfunktion (ED). 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
Propecia: DHT, das durch die 5-alpha-Reduktase aus Testosteron gebildet wird, treibt bei genetisch prädisponierten Männern die Miniaturisierung der Kopfhaarfollikel voran und verkürzt die Anagen-Wachstumsphasen allmählich, bis die… Viagra Professional: Sildenafilcitrat hemmt die PDE5, sodass das während der sexuellen Erregung produzierte zyklische GMP im Penisgewebe akkumulieren kann, was die glatte Muskulatur der Penisarterien entspannt und den Bluteinstrom erhöht.
When Propecia is preferred
Propecia ist zur Behandlung der androgenetischen Alopezie bei Männern im Alter von 18 bis 41 Jahren zugelassen.
When Viagra Professional is preferred
Viagra Professional ist für erwachsene Männer mit erektiler Dysfunktion bestimmt.
Häufig gestellte Fragen
Is Propecia or Viagra Professional better? ▾
Propecia and Viagra Professional 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 Propecia to Viagra Professional? ▾
Switching between Propecia and Viagra Professional 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 Propecia and Viagra Professional 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 Propecia comparisons
Die Informationen auf dieser Website dienen ausschließlich zu Referenz- und Bildungszwecken. Sie ersetzen nicht die Beratung durch qualifiziertes medizinisches Fachpersonal.