What is Viagra?
Viagra (generic name sildenafil) is a medication used to treat men who have trouble getting an erection, a condition called erectile dysfunction or impotence. The U.S. Food and Drug Administration approved Viagra for erectile dysfunction, but not to prolong erections. Viagra will not help delay ejaculation. Viagra works by increasing blood flow to the penis. With sexual stimulation, this causes an erection. You won't get an erection by simply taking a Viagra pill. Viagra improves the ability to have erections in about 80 percent of the men who take it. Viagra is available in doses of 25 to 100 mg. For best results, take it one hour before having sex. The drug can be effective anywhere from ten minutes to four hours after taking a dose. It works faster when you take it on an empty stomach. When the sexual experience is over, the erection goes away: Viagra doesn't help you keep an erection. Don't take more than one dose of Viagra per day because this greatly increases the risks of severely low blood pressure. Sources:Micromedex® Healthcare Series. Thomson Micromedex, 2006.Viagra product information, Pfizer Labs, 2006. Medina P. “Effects of sildenafil on human penile blood vessels.” Urology 56 (2000).Drug Facts and Comparisons. Facts & Comparisons, 2006.This answer prepared 02/20/2001. This information updated 11/30/2006.
Source: http://www.drugstore.com
The article below is take from the Source: http://www.webmd.com
Approved Drugs:
There are only four oral drugs approved by the FDA to treat erectile dysfunction: Cialis, Levitra, Staxyn, and Viagra. All work by increasing the flow of blood into the penis so that when a man is sexually stimulated, he can get an erection.
Cialis works a bit faster (within about 15 minutes), and the effects last much longer -- up to 36 hours in some cases. Staxyn is an orally disintegrating tablet that contains the same active ingredient as Levitra but is not interchangeable with Levitra tablets.
Source: http://www.webmd.com
Viagra (generic name sildenafil) is a medication used to treat men who have trouble getting an erection, a condition called erectile dysfunction or impotence. The U.S. Food and Drug Administration approved Viagra for erectile dysfunction, but not to prolong erections. Viagra will not help delay ejaculation. Viagra works by increasing blood flow to the penis. With sexual stimulation, this causes an erection. You won't get an erection by simply taking a Viagra pill. Viagra improves the ability to have erections in about 80 percent of the men who take it. Viagra is available in doses of 25 to 100 mg. For best results, take it one hour before having sex. The drug can be effective anywhere from ten minutes to four hours after taking a dose. It works faster when you take it on an empty stomach. When the sexual experience is over, the erection goes away: Viagra doesn't help you keep an erection. Don't take more than one dose of Viagra per day because this greatly increases the risks of severely low blood pressure. Sources:Micromedex® Healthcare Series. Thomson Micromedex, 2006.Viagra product information, Pfizer Labs, 2006. Medina P. “Effects of sildenafil on human penile blood vessels.” Urology 56 (2000).Drug Facts and Comparisons. Facts & Comparisons, 2006.This answer prepared 02/20/2001. This information updated 11/30/2006.
Source: http://www.drugstore.com
The article below is take from the Source: http://www.webmd.com
Approved Drugs:
There are only four oral drugs approved by the FDA to treat erectile dysfunction: Cialis, Levitra, Staxyn, and Viagra. All work by increasing the flow of blood into the penis so that when a man is sexually stimulated, he can get an erection.
What Are the Differences Between Cialis, Levitra, Staxyn, and Viagra?
Cialis, Levitra, Staxyn, and Viagra work by a similar mechanism to cause erections. There are subtle differences in how long the drug works and how quickly it works. Levitra works a little longer than Viagra. They both take effect in about 30 minutes. With Levitra, the effects last for about 5 hours. With Viagra, the effects last approximately 4 hours.Cialis works a bit faster (within about 15 minutes), and the effects last much longer -- up to 36 hours in some cases. Staxyn is an orally disintegrating tablet that contains the same active ingredient as Levitra but is not interchangeable with Levitra tablets.
If One of These Drugs Isn't Effective for Erectile Dysfunction, Can I Try Another?
Yes, but because these drugs work the same way, it's unlikely that you'll have success with one if you've failed to achieve an adequate erection with another.What Precautions Should I Take Before Taking One of These Drugs?
There are certain situations in which these drugs may not be safe to take. Before taking them, tell your doctor:- If you are allergic to any drugs, including Viagra or other ED medications.
- About any prescription or nonprescription medications you are currently taking, including herbal and dietary supplements.
- If you are scheduled for surgery, including dental surgery.
- If you take nitroglycerin or a long-acting nitrate to treat chest pain. The combination of Cialis, Levitra, Staxyn, or Viagra with these drugs can cause dangerously low blood pressure.
- If you take alpha-blockers for blood pressure or prostate problems. The combination of Cialis, Levitra, Staxyn, or Viagra with these drugs can also cause dangerously low blood pressure. Patients should not be started on Staxyn unless they have previously taken Levitra as directed by their doctor.
Who Should Not Take Cialis, Levitra, Staxyn, or Viagra?
If you have suffered from a heart attack, stroke or life threatening arrhythmia (irregular heart rate) within the last 6 months you should discuss other options with your doctor. It is also advised to avoid these drugs if you have uncontrolled high or low blood pressure or if you experience chest pain with sex.What Are the Side Effects of Cialis, Levitra, Staxyn, and Viagra?
Side effects are not common but they can occur. Side effects can include:- Headache
- Upset stomach or heartburn
- Flushing (feeling warm)
- Nasal congestion
- Changes in vision (color, glare)
- Back pain (with Cialis)
Warning
Call your doctor or seek emergency treatment immediately if you experience any of the following symptoms:- Rash
- Painful erection
- Prolonged erection (longer than 4 hours)
- Fainting
- Chest pain
- Itching or burning during urination
- Are over 50 years old
- Smoke
- Have heart disease
- Have diabetes
- Have high blood pressure
- Have high cholesterol
- Have certain eye problems
How Should These Drugs Be Stored?
These drugs should be kept in its original container and out of reach of children. Store them away from excess heat and moisture (not in the bathroom). Discard any medication that has expired or is no longer needed.Source: http://www.webmd.com
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