|
Below is a brief comparison chart of the
characteristics of each drug, comprised from different medical
studies we found published on the web.
This chart is not to be used as a replacement
for medical advice; it is for informational purposes only. Consult your physician prior to taking Cialis, Levitra,
Viagra, or any other medication.
| |
Viagra
sildenafil
|
Cialis
tadalafil
|
Levitra
vardenafil
|
|
Pharmaceutical
Form
|
25 mg, 50 mg 100
mg tablets
|
10 mg, 20 mg tablets
|
5 mg, 10mg, 20
mg tablets
|
|
Method of Administration
|
Oral
Effective within 30 to 120 minutes
(effect delayed if taken with food)
|
Oral
Effective within 16 to 30 minutes.
To be taken 30 minutes to 12 hours prior to sexual activity
(effect NOT delayed by food)
|
Oral
Effective within 25 to 120 minutes
(effect delayed by fatty meal).
|
|
Duration of
action
|
4 to 5 hours
|
24 hours
|
4 to 5 hours
|
|
Very Common
Side Effects (more than 10% to 4%)
|
Facial flushing
Headache
Indigestion
|
Headache
Indigestion
|
Facial flushing
Headache
|
|
Less Common
Side Effects (less than 4% but more than 1%)
|
Altered vision
Dizziness
Nasal Congestion
|
Back pain
Muscle aches
Nasal congestion
Facial flushing
Dizziness
|
Indigestion
Nausea
Dizziness
Nasal congestion
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