Difference viagra levitra cialis.
Comparison of cialis, levitra and viagra.
Viagra (Sildenafil Citrate)
is a medication made by Pfizer Pharmaceuticals, and is the first
approved non-surgical treatment for erectile dysfunction (ED)
that does not have to be either injected or inserted directly
into the penis to achieve and maintain an erection. It was approved
by the US Food and Drug Administration (FDA) for prescription
sale at the end of March, 1998.
Levitra (Vardenafil hydrochloride)
is an FDA-approved oral prescription medication for the treatment
of erectile dysfunction (ED) in men. It is available in 2.5 mg,
5 mg, 10 mg, and 20 mg tablets and is taken only when needed.
Levitra helps increase blood flow to the penis and may help men
with ED get and keep an erection satisfactory for sexual activity.
Once a man has completed sexual activity, blood flow to his penis
should decrease and his erection should go away.
Cialis (Tadalafil) is used to
treat male sexual function problems (impotence or erectile dysfunction)
by blocking a certain enzyme (phosphodiesterase-PDE5) in the body.
In combination with sexual stimulation, tadalafil helps blood
flow into the penis to achieve and maintain an erection.
Which is better viagra cialis or levitra?
| Drug |
|
|
|
| Manufacturer |
Bayer |
Pfizer |
Lilly Icos |
| Active ingridient |
Vardenafil hydrochloride |
Sildenafil Citrate |
Tadalafil |
| Date Released |
April 2003 |
March 1998 |
February 2003 |
| How long does it work? |
up to 6 hours |
up to 5 hours |
up to 36 hours |
| Take how long before
action? |
25 to 45 minutes |
60 minutes |
30 minutes to 12 hours |
| Most common side effects: |
Headache, facial flushing |
Headache, facial flushing,
altered or bluish vision |
Headache, Myalgia
dyspepsia/upset stomach, back pain |
| Dosages |
2.5mg, 5mg, 10mg, and
20mg tablets |
50mg and 100mg |
10mg and 20mg |
| How should
be taken? |
can
be taken with food |
on
an empty stomach |
Avoid
eating grapefruit or drinking grapefruit juiceh |
Best price
of
pills from reputable suppliers
|
|
|
|
Best
price 30 generic pills from reputable suppliers
|
|
|
|
| FDA Approval: |
Approved By FDA for
USA Market |
Widely available |
Approved By FDA for
USA Market |
| Contraindications |
Any
Nitrate-Based Medicine |
Any
Nitrate-Based Medicine |
Any
Nitrate-Based Medicine, Angina, Hypertension, Hypotension
|
Levitra Highlights
- Manufacturer Bayer.
- Works for up to 6 hours.
- Recommended time to take before sex is 25 to 45 minutes.
- Most common side effects: Headache, facial flushing.
- With Levitra, there are no food or alcohol restrictions.
- Advantages: Bayer claims in clinical trials
Levitra demonstrates
improved quality of erections and demonstrated rapid and reliable
response.
Levitra has less side effects compared to Viagra and lasts about
the same
time as Viagra in the body.
Cialis Highlights
- Manufacturer Lilly Icos.
- Works for up to 36 hours.
- Recommended time to take before sex is 30 minutes to 12 hours.
- Most common side effects: Headache, dyspepsia/upset stomach,
back pain.
- Advantages: Cialis has few side effects
and lasts longer in the body to increase
spontaneity than either Levitra or Viagra.
Viagra Highlights
- Manufacturer Pfizer.
- Works for up to 5 hours.
- Recommended time to take before sex is 60 minutes.
- Most common side effects: Headache, facial flushing, altered
or blueish vision.
- Advantages: Viagra is very well known and
a proven effective treatment.
It is discounted heavily and is widely available.
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Compare Viagra, Levitra, Cialis
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