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| Viagra, Cialis, Levitra - how do they compare to each other?
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Below is a comparison chart of how the 3 erectile dysfunction drugs on the market compare to each other.
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Medicine
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Start working after
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Effectiveness Study
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Duration
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Diminished with food |
Rating |
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about 1 hour |
74% of men on recommended starting dose had improved erections
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4 hours
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Yes |
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Cialis 20mg |
about 25 minutes |
84% of men had improved erections
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24-36 hours
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No |
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Levitra 10mg |
about 1 hour |
75% of men on recommended starting dose had an erection enabling sex
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4 hours
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No |
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