Quick Summary
Viagra (Sildenafil)
Most widely used PDE5 inhibitor.
Duration: 4–6 hours
Onset: 30–60 minutes
Food: High-fat meals may delay effect
Levitra (Vardenafil)
PDE5 inhibitor with slightly higher potency in some patients.
Duration: 4–6 hours
Onset: 30–60 minutes
Food: Heavy meals may slow absorption
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Comparison Table
| Feature | Viagra (Sildenafil) | Levitra (Vardenafil) |
|---|---|---|
| Onset | 30–60 min | 30–60 min |
| Duration | 4–6 hours | 4–6 hours |
| Food interaction | Moderate | Moderate (slightly more sensitive to heavy meals) |
| Clinical note | Most prescribed ED medication worldwide | May be more effective in some patients (including diabetes-related ED) |
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Compare sildenafil and vardenafil-based treatments.
Compare sildenafil and vardenafil-based treatments.
Key Differences
Viagra (sildenafil) is the most widely prescribed ED medication with extensive clinical use. Levitra (vardenafil) is similar in duration but may offer improved response in some patients.
Both medications are fast-acting and typically used as-needed before sexual activity.
Frequently Asked Questions
Both Levitra (vardenafil) and Viagra (sildenafil) are similarly effective PDE5 inhibitors. Individual response varies, so one may work better depending on the patient.
Both medications typically start working within 30–60 minutes. Food intake and metabolism can affect onset time.
Both Levitra and Viagra typically last around 4–6 hours, with minor differences depending on dose and individual response.
Levitra may be slightly less affected by food compared to Viagra, but both can have delayed absorption with heavy or high-fat meals.
Some studies suggest Levitra (vardenafil) may be slightly more effective in men with diabetes-related ED, but both medications are widely used.
Yes, switching is possible, but it should be done under medical supervision to ensure proper dosing and safety.