Cialis vs Viagra Professional: side-by-side comparison
Cialis (Tadalafil) and Viagra Professional (Sildenafil Citrate) both belong to the Erektile Dysfunktion (ED) class. They share clinical context but use different active ingredients. The choice between them depends on mechanism nuances, side-effect profile and individual response.
| Property | Cialis | Viagra Professional |
|---|---|---|
| Active ingredient | Tadalafil | Sildenafil Citrate |
| Manufacturer | Eli Lilly | Pfizer |
| Class | Erektile Dysfunktion (ED) | Erektile Dysfunktion (ED) |
| Strengths | 2.5mg, 5mg, 10mg, 20mg | 100mg |
| Forms | tablet | sublingual tablet |
What's the same
Cialis and Viagra Professional both belong to the Erektile Dysfunktion (ED) class and are used for partially overlapping indications. The active ingredients — Tadalafil vs Sildenafil Citrate — share the same therapeutic approach, so many safety and management points carry across both.
Key differences
Meaningful differences are in active ingredient (Tadalafil vs Sildenafil Citrate), strengths (2.5mg, 5mg, 10mg, 20mg vs 100mg), forms (tablet vs sublingual tablet), and the mechanism, half-life and side-effect nuances that distinguish members of the class.
Mechanism and action
Cialis: Während der sexuellen Stimulation wird im Corpus cavernosum Stickstoffmonoxid freigesetzt, das ein Enzym aktiviert, welches zyklisches GMP produziert. 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 Cialis is preferred
Cialis ist bei erwachsenen Männern zur Behandlung der erektilen Dysfunktion indiziert.
When Viagra Professional is preferred
Viagra Professional ist für erwachsene Männer mit erektiler Dysfunktion bestimmt.
Häufig gestellte Fragen
Is Cialis or Viagra Professional better? ▾
There is no single answer. Cialis and Viagra Professional both belong to the Erektile Dysfunktion (ED) class but differ in mechanism nuances, half-life and side-effect profile. Preference depends on the patient, the prescriber and prior response to other therapies.
Can I switch from Cialis to Viagra Professional? ▾
Switching within the Erektile Dysfunktion (ED) class is done under supervision, typically using equivalent doses and a follow-up period to confirm response and tolerance. It is not a self-directed decision.
Do Cialis and Viagra Professional have the same side effects? ▾
They share many of the Erektile Dysfunktion (ED) class side effects, with differences from mechanism and dose. Each medication's prescribing information lists specifics.
More Cialis comparisons
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