Viagra: How It Works in the Body
To make sure Viagra is safe for you, tell your doctor if you have ever had: heart disease or heart rhythm problems, coronary artery disease; heart disease or heart rhythm problems, coronary artery disease; a heart attack, stroke, or congestive heart failure; a heart attack, stroke, or congestive heart failure; a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia; a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia; retinitis pigmentosa (an inherited condition of the eye); retinitis pigmentosa (an inherited condition of the eye); a physical deformity of the penis (such as Peyronie's disease); or a physical deformity of the penis (such as Peyronie's disease); or if you have been told you should not have sexual intercourse for health reasons. if you have been told you should not have sexual intercourse for health reasons.
Are There Differences in Them?
But, if you do end up eating beforehand, avoid taking it with a high-fat meal. Fatty foods can affect how quickly the medication is absorbed — and delay how fast it takes for Viagra to work. The most common Viagra side effects include: More serious side effects are also possible. Viagra and other ED medications can rarely cause dangerously long-lasting erections. An erection lasting longer than 4 hours is known as priapism.
What are the side effects of sildenafil?
If left untreated, this condition can cause permanent damage to the tissue that helps you become erect. What’s more, if you have certain heart conditions or take certain types of blood pressure medications that relax your blood vessels — including nitrates such as isosorbide dinitrate or nitroglycerin — your prescriber may warn you not to use Viagra. This is due to the increased risk of heart attack or dangerously low blood pressure. After taking Viagra, the medication quickly enters your system. Viagra should start working within an hour. Viagra can decrease blood flow to the optic nerve of the eye, causing sudden vision loss.
| Property | Description | Units / Format | Notes |
|---|---|---|---|
| Active Ingredient | Sildenafil Citrate | mg | 50 mg, 100 mg |
| Brand Names | Viagra, Revatio, Sildenafil | N/A | Variations depending on use |
| Typical Dosage | 50-100 mg | mg | Taken as needed before sexual activity |
| Onset of Action | 30-60 minutes | minutes | Time to start feeling effects |
| Duration of Effect | Up to 4-6 hours | hours | Effect duration |
This has occurred in a small number of people taking sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoked or were over 50 years old.
- Over-the-counter Viagra is illegal and potentially dangerous.
- Misuse can lead to priapism, a painful prolonged erection.
- Viagra’s effectiveness may decrease with age or certain health conditions.
- It is important to be aware of potential drug interactions.
- Women should not take Viagra, as its safety for them is unproven.
- The drug’s development was based on research into nitric oxide’s role in vasodilation.
- Viagra is on the World Health Organization’s list of essential medicines.
- Attention to dosage is vital to avoid adverse effects.
It is not clear whether sildenafil is the actual cause of vision loss. Viagra is not expected to harm an unborn baby. Tell your doctor 25 mg viagra if you are pregnant or plan to become pregnant. It is not known whether sildenafil passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby. Do not give this medicine to anyone under 18 years old without medical advice. Take Viagra exactly as it was prescribed for you. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day. Viagra can help you have an erection when sexual stimulation occurs.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Super Active | 100mg | 90 + 10 Pills | 165.61€ 157.72€ | |
| Viagra Professional | 100mg | 90 + 2 Pills | 207.09€ 197.23€ | |
| Viagra Soft Tabs | 100mg | 20 Pills | 62.99€ 59.99€ | |
| Viagra Generic | 200mg | 120 + 8 Pills | 204.80€ 195.05€ | |
| Viagra Generic | 100mg | 30 + 4 Pills | 60.91€ 58.01€ | |
| Viagra Original | 100mg | 92 + 4 Pills | 362.88€ 345.60€ | |
| Viagra Super Active | 100mg | 360 + 30 Pills | 470.93€ 448.50€ | |
| Viagra Generic | 50mg | 120 + 6 Pills | 129.64€ 123.47€ | |
| Viagra Professional | 100mg | 360 + 6 Pills | 527.09€ 501.99€ | |
| Viagra Original | 100mg | 22 + 2 Pills | 120.71€ 114.96€ | |
| Viagra Oral Jelly | 100mg | 30 + 5 Sachets | 115.76€ 110.25€ | |
| Viagra Generic | 25mg | 10 Pills | 25.19€ 23.99€ | |
| Viagra Oral Jelly | 100mg | 21 Sachets | 78.66€ 74.91€ |
An erection will not occur just by taking a pill. During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of sildenafil. Store at room temperature away from moisture and heat. Since Viagra is used as needed, you are not likely to miss a dose. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
- Viagra’s popularity led to increased research for similar ED drugs.
- It is not recommended for use by women or children.
- Some users report prolonged erections, which require medical attention.
- Viagra does not cure erectile dysfunction; it helps manage symptoms.
- Safety and efficacy are best evaluated with medical advice.
- The medication can cause visual disturbances in some users.
- Viagra is sometimes used recreationally, which is risky.
- Proper dosage and timing are essential for safety and effectiveness.
Drinking alcohol with this medicine can cause side effects.
| Region / Country | Brand Names | Availability | Typical Price Range |
|---|---|---|---|
| United States | Viagra, Revatio | Widely available | $20 - $60 per pill |
| European Countries | Viagra, Sildenafil | Widely available | €15 - €50 per pill |
| India | Sildenafil Tablets | Available mainly online | ₹50 - ₹200 per pill |
| China | Generic Sildenafil | Commonly available | ¥30 - ¥150 per pill |
| Online markets | Various generics | Easily accessible | Varies widely |
Grapefruit and grapefruit juice may interact with sildenafil and lead to unwanted side effects. Avoid the use of grapefruit products while taking sildenafil.
Before taking this medicine
Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. This page contains specific information for Viagra, not Revatio. Do not take Viagra while also taking Revatio, unless your doctor tells you to. Some medicines can cause unwanted or dangerous effects when used with Viagra. Tell your doctor about all your current medicines, especially riociguat (Adempas) and nitrates.
How to Take Sildenafil
Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as "poppers". Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. Stop using Viagra and get emergency medical help if you have sudden vision loss. Avoid using any other medicines to treat impotence, such as alprostadil or yohimbine, without first talking to your doctor. Get emergency medical help if you have signs of an allergic reaction to Viagra: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
What is Viagra?
You should not use Viagra if you are allergic to sildenafil, or: if you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas). if you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas). Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Stop taking Viagra and get emergency medical help if you have: heart attack symptoms--chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating; heart attack symptoms--chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating; vision changes or sudden vision loss; or vision changes or sudden vision loss; or erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis). erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis).
Route of administration
But this timeframe can vary for different people. You can take it anywhere from 30 minutes to 4 hours before sexual activity once you know how it affects you. You may be wondering if there are ways to help Viagra work even faster, such as chewing or crushing the tablet and dissolving it under your tongue. However, it isn’t made to work that way. The effects of Viagra usually last 4 to 8 hours.
Other Interactions
The specific time frame Viagra lasts depends on the person and the dose you take. In fact, some people may experience more than one erection during this time. However, just because Viagra can stay in your body for up to 8 hours, that doesn’t mean your erection should last that long. If your erection lasts longer than 4 hours — even if it’s not painful — seek medical help right away. Priapism should be treated right away to avoid potential long-term damage. Call your doctor at once if you have: ringing in your ears, or sudden hearing loss; ringing in your ears, or sudden hearing loss; swelling in your hands, ankles, or feet; swelling in your hands, ankles, or feet; a light-headed feeling, like you might pass out.
Counterfeit Viagra
If you have sickle cell anemia, multiple myeloma, leukemia, or certain penile deformities (such as Peyronie’s disease), you’re more likely to have a prolonged erection. Just as there are a number of reasons why someone experiences ED, the same goes for premature ejaculation. And while medications like Viagra can help your erection stay firm, it usually isn’t the first choice for preventing ejaculation. However, the two issues often happen together. Your prescriber viagra black may recommend taking Viagra to help address ED.
Report Problems to the Food and Drug Administration
As a result of treatment, you may see some improvement with how long you last. If you’re still not lasting as long as you’d like during sex, your prescriber may have you try behavioral methods (e.g., practicing ejaculation control), counseling, or other medications — such as numbing creams or antidepressants — to help. There are ways to save on Viagra, which is available as both a brand-name and generic medication. GoodRx can help you save over 98% off the average retail price of the generic version. Generic Viagra's price for 10 tablets at certain pharmacies is as low as $9.80 with a free GoodRx discount. a light-headed feeling, like you might pass out.
Society and culture
If you have commercial insurance (or don’t have insurance), you may be eligible to save up to 50% off your copay for brand-name Viagra using a savings card from the manufacturer. Viagra (sildenafil) can be an effective option to help you achieve and maintain an erection. To get the best results, take Viagra on an empty stomach at least an hour before sexual activity, and follow the instructions from your prescriber. If your erection lasts over 4 hours, get medical attention right away to avoid possible long-term damage. Erectile dysfunction and premature ejaculation: interrelationships and psychosexual factors.
What causes an erection?
Development and therapeutic applications of nitric oxide releasing materials to treat erectile dysfunction. New insights into hypertension-associated erectile dysfunction. Toxic effects of sexual drug overdose: Sildenafil (Viagra). Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Other brand names of sildenafil (oral) include: Revatio, Viagra, Vybrique Drug class: Impotence medications Viagra relaxes muscles found in the walls of blood vessels and increases blood flow to particular areas of the body. Viagra is used to treat erectile dysfunction (impotence) in men. abnormal vision (blurred vision, changes in color vision) abnormal vision (blurred vision, changes in color vision) This is not a complete list of side effects and others may occur.
- Viagra’s impact has driven social and medical discussions about ED.
- It is advisable to disclose all medications to your healthcare provider.
- Some individuals may require alternative treatments if Viagra is ineffective.
- The drug’s popularity has led to numerous online counterfeit products.
- Using genuine Viagra from licensed pharmacies ensures safety.
- Pregnant women and men with certain health issues should avoid Viagra.
- Common side effects tend to diminish as the body adjusts.
- Regular check-ups are recommended for men on long-term ED medication use.
Do not take Viagra with similar medications such as avanafil (Stendra), tadalafil (Cialis) or vardenafil (Levitra). Tell your doctor about all other medications you use for erectile dysfunction. Tell your doctor about all your current medicines and any you start or stop using, especially: drugs to treat high blood pressure or a prostate disorder; drugs to treat high blood pressure or a prostate disorder; medicine to treat HIV/AIDS - atazanavir, indinavir, ritonavir, or saquinavir; medicine to treat HIV/AIDS - atazanavir, indinavir, ritonavir, or saquinavir; medications used to treat pulmonary artery hypertension.
| Condition / Situation | Reason | Recommendation |
|---|---|---|
| Use with Nitrates | Risk of severe hypotension | Avoid concomitant use |
| Cardiovascular conditions | Increased heart attack risk | Consult doctor before use |
| Recent stroke or unstable angina | Potential for worsening condition | Avoid until stabilized |
| Liver or kidney impairment | Altered drug metabolism | Dose adjustment necessary |
| Allergies to sildenafil or excipients | Risk of allergic reactions | Check ingredients carefully |