Best ED Medications (2026 Guide)

Compare Viagra, Cialis, Levitra and other ED treatments to find the best option

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Quick Comparison

Drug Active Ingredient Onset Duration
Viagra Sildenafil 30–60 min 4–6 hours View
Cialis Tadalafil 30–60 min Up to 36h View
Levitra Vardenafil 30–60 min 4–6 hours View
Stendra Avanafil 15–30 min 4–6 hours View
Zudena Udenafil 30–60 min 12–24 hours View

Medication Categories

PDE5 Inhibitors

Main class for ED treatment

Fast-Acting

Avanafil-based drugs

Long-Lasting

Tadalafil & Udenafil

Generics

Sildenafil, Tadalafil alternatives

Popular Medications

Viagra

Most well-known ED medication worldwide.

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Cialis

Long-lasting ED treatment up to 36 hours.

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Levitra

Reliable alternative to sildenafil.

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Stendra

Fast-acting ED medication.

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How ED Medications Work

Most erectile dysfunction medications belong to the PDE5 inhibitor class. They work by increasing blood flow to the penis, helping achieve and maintain an erection during sexual stimulation. The main differences between medications are onset time, duration, and tolerance.

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FAQ

It depends on your goals: Cialis for long duration, Viagra for reliability, and Avanafil for fast onset.

Tadalafil (Cialis) lasts up to 36 hours, making it the longest‑acting PDE5 inhibitor.

Avanafil has the fastest onset among PDE5 inhibitors, often acting sooner than other options.

Effectiveness is similar overall, but individual response varies based on metabolism, timing, and tolerability.

No — sexual arousal is required for ED medications to work, as they enhance natural physiological responses.

Cialis is preferred for spontaneity due to its long duration, allowing flexibility over a full day or more.

Side effects are broadly similar, though some drugs may cause specific effects like flushing, headache, or nasal congestion more often.

This site is for informational purposes only and does not provide medical advice.