Viagra: How a Little Blue Pill Changed the World

They might recommend changing your Viagra dosage or switching to a different type of ED pill — topics we discuss more in our guide to what to do when Viagra isn’t working. Most of these are mild and rarely stick around for longer than a few hours, but it’s still important to be aware of them.

• Viagra can be used with other ED medications but only under medical advice.
• It is not effective if there is no underlying erectile dysfunction.
• Lifestyle changes like exercise can enhance Viagra’s effectiveness.
• Viagra may cause a sudden drop in blood pressure in some cases.
• Men with certain health conditions should avoid using Viagra.
• Report any adverse reactions to your healthcare provider immediately.

Abnormal vision (blurred vision and/or changes in color vision) Abnormal vision (blurred vision and/or changes in color vision) Although rare, Viagra and sildenafil can cause more severe side effects, including: Priapism is a serious issue that can cause tissue damage to your penis when left untreated.

What should I know about storage and disposal of this medication?

Feeling anxious, nervous or guilty about sex may cause erectile dysfunction that doesn’t improve with medication like Viagra. Other causes of psychological ED include major depressive disorder, stress, and low self-esteem. A mental health professional can help you with these issues. You might not feel attracted or in the mood for sex. Viagra works by improving blood flow to your penis, not by changing your mood. So, it’s essential to get emergency medical attention if you develop a painful erection after taking Viagra.

Aspect	Effect	Scientific Evidence	Notes
Libido enhancement	Limited evidence	Not FDA-approved	Off-label considerations
Vaginal blood flow	Increased blood flow	Some studies show	More research needed
Satisfaction levels	Mixed results	Inconclusive	Subjective reports
Side effects in women	Similar to men, mild and rare	Limited data	Caution advised

Although these issues might sound alarming, it’s important to remember that they only occur in a tiny percentage of men who take Viagra.

Product	Dosage	Quantity + Bonus	Price
Viagra Oral Jelly	100mg	30 + 5 Sachets	115.76€ 110.25€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Generic	50mg	60 + 4 Pills	83.93€ 79.93€	Buy
Viagra Generic	50mg	10 Pills	26.87€ 25.59€	Buy
Viagra Generic	100mg	270 + 10 Pills	270.47€ 257.59€	Buy
Viagra Super Active	100mg	120 + 16 Pills	198.37€ 188.92€	Buy
Viagra Generic	100mg	120 + 6 Pills	149.50€ 142.38€	Buy
Viagra Generic	150mg	180 + 10 Pills	236.46€ 225.20€	Buy
Viagra Professional	100mg	30 Pills	88.92€ 84.69€	Buy
Viagra Professional	100mg	20 Pills	71.14€ 67.75€	Buy
Viagra Generic	200mg	10 Pills	40.96€ 39.01€	Buy
Viagra Soft Tabs	100mg	270 + 10 Pills	419.95€ 399.95€	Buy
Viagra Oral Jelly	100mg	63 + 7 Sachets	190.54€ 181.47€	Buy
Viagra Soft Tabs	100mg	60 + 6 Pills	152.94€ 145.66€	Buy
Viagra Original	100mg	120 + 8 Pills	470.39€ 447.99€	Buy
Viagra Generic	150mg	270 + 10 Pills	326.61€ 311.06€	Buy

Our list of Viagra FAQs goes into more detail about common worries related to Viagra, as well as how you can use this medication while putting safety first.

What special precautions should I follow?

It may not work if you don’t feel attracted to your partner or don’t feel interested in sex. If Viagra doesn’t work for you the first time you use it, don’t panic. Try taking Viagra the next time you plan to have sex and see if you’re more relaxed and able to stay erect. You can also try taking Viagra for the first time when you don’t plan to have sex to see if you can get an erection when you don’t feel any pressure. If nothing seems to work, reach out to your healthcare provider and let them know. Viagra is safe and effective, but it can cause potentially dangerous interactions when it’s taken with other drugs, including common prescription medications like nitrates and alpha-blockers used to treat hypertension (high blood pressure). When used with nitrates, Viagra can trigger a sudden decrease in blood pressure that may be harmful.

What is the "little blue pill?"

But that’s not the case for everyone. It’s pretty common to deal with weak or unreliable erections the first few times you take Viagra — something that may cause you to panic, even though it shouldn’t. If you’re prescribed Viagra and still get ED, one or several things could be responsible: You might not be prescribed the correct dose of Viagra. Viagra comes in a range of different doses and requires a prescription for a reason. If you still get ED after using Viagra, consider talking to your healthcare provider about adjusting your dose.

Report Problems to the Food and Drug Administration

You might not be prescribed the correct dose of Viagra. You might be dealing with medical conditions that cause Viagra to perform less effectively. People with heart disease, high blood pressure, obesity, and other health conditions are at higher risk of ED and sometimes require a higher dose of medication. If you want a higher dose, seek medical advice and talk to your healthcare provider about lifestyle changes and other ways to address health problems. You could have sexual performance viagra 100mg anxiety or other psychologically induced causes of ED. In some cases, this drop in blood pressure may result in dizziness, fainting, or serious cardiovascular events such as heart attack or stroke.

7.4 Ritonavir and other CYP3A4 inhibitors

Viagra doesn’t start working the moment you swallow it — instead, it needs time to make its way into your blood vessels and start increasing blood flow to your penis. According to the Food and Drug Administration (FDA), it usually takes 30 to 60 minutes for Viagra or generic sildenafil to start producing a noticeable improvement in your erection quality. However, you shouldn’t take your Viagra tablet more than three or four hours before the time you plan to have sex. On average, Viagra lasts for about four hours, after which it may no longer help you get and maintain an erection. For better confidence in bed (and better sex), take Viagra 30-60 minutes ahead of time — and no earlier.

Other Medical Problems

There aren’t any safe ways to speed up Viagra’s effects, and it’s not something you should try viagra cream to do. However, there are some things to avoid if you don’t want to slow down the effects, like heavy meals with fatty proteins. You can take Viagra on an empty stomach or with food. However, you’ll want to avoid foods high in fat because fat can interfere with the absorption of sildenafil citrate, the active ingredient in Viagra. By slowing down your body’s ability to absorb sildenafil, Viagra may take longer to work and produce less noticeable results than usual if taken after a fat-heavy meal.

What should I do if I miss a dose of sildenafil?

In other words, you might want to reconsider the double cheeseburger and switch it out for a light meal. Once you get used to how long it takes for the medication to start working, you can adjust your eating habits accordingly. While grapefruit juice may be a favorite ingredient in cocktails or morning beverages, avoid it when taking any prescription ED medication. Grapefruit juice can impact how your body metabolizes PDE5 inhibitor medications like Viagra, which could put you at risk of low blood pressure and serious complications if you take other medications that affect your blood pressure. If you absolutely cannot give up your favorite citrus juice, talk to your healthcare provider about a lower dose of meds. You should also avoid nitrites, including those found in recreational "poppers." Other medications that may interact with Viagra include certain antibiotics and antifungal medications.

• Viagra’s effectiveness may vary based on age, health, and dosage.
• It can interact with medications like nitrates, causing dangerous drops in blood pressure.
• Do not use Viagra if you have severe heart or liver conditions.
• Over-the-counter Viagra is not approved and may be unsafe.
• Sexual stimulation is needed for Viagra to work effectively.
• Always buy Viagra from a licensed pharmacy.

Our guide to sildenafil interactions goes into more detail about medication interactions that you should be aware of before using Viagra.

• Viagra mimics the effects of natural nitric oxide in the body.
• It is important to take Viagra exactly as prescribed.
• The medication can cause headaches due to vasodilation.
• Viagra’s onset and duration vary among users.
• Exercise caution if you experience chest pain or severe dizziness.
• Always inform your doctor about any other medications taken.

If you currently take any over-the-counter or prescription medications or any supplements, it’s important to let your healthcare provider know before you use Viagra, sildenafil, or similar ED treatments. Viagra isn’t the only PDE5 inhibitor on the market. In fact, the FDA has approved three other PDE5 inhibitors to help treat the symptoms of erectile dysfunction: It’s important not to mix PDE5 inhibitors without the supervision of your healthcare provider.

• Generic versions of Viagra, containing sildenafil, are available in some markets.
• The price of Viagra can vary depending on brand and dosage.
• Using illicit or unregulated Viagra is risky and can be dangerous.
• Viagra’s chemical formula is C22H30N6O4S.
• It works by relaxing smooth muscle tissue in the penis.
• Consultation with a doctor is essential before starting therapy.

When used together at their full doses, these medications can interact in some pretty dangerous ways, causing dizziness, chest pain, and other side effects.

2.4 Dosage Adjustments Due to Drug Interactions

Visit Mayo Clinic Men's Health to get started. Be ready for sex whenever you're in the mood Like other prescription medicines, ViagraⓇ and its generic form, sildenafil, work best when you take them under the right conditions. From your mental state to your eating habits, a range of factors can and will influence the effectiveness of Viagra and other phosphodiesterase type 5 inhibitors like CialisⓇ and StendraⓇ. Understanding the factors that affect the famous “little blue pill” — and using them to your advantage — can help you enjoy better sex and more reliable erections while reducing your risk of having to deal with side effects. Below, we’ve covered how you can take Viagra or generic sildenafil for optimal results, from the best time to take Viagra before sexual intercourse to drug interactions and adverse effects that you should know about.

Can I take Viagra after I’ve had my prostate removed?

Viagra is great as an erectile dysfunction treatment, but taking it in particular conditions can make it even more effective. To get the best results from Viagra when treating sexual dysfunction, you’ll want to keep the following things in mind: Viagra works best when it’s taken at least 30 to 60 minutes before sex (and no more than four hours before). Viagra works best when it’s taken at least 30 to 60 minutes before sex (and no more than four hours before). Eating food that’s high in fat can slow absorption and make Viagra work slightly slower. Viagra may not work if you're not also getting sexual stimulation or if you’re anxious about sex.

Does Viagra work to treat ED?

Some drug interactions with other medications can undermine Viagra. Viagra side effects may affect your ability to perform, viagra black though most are mild and temporary. All erectile dysfunction (ED) medications work best when you’re maintaining a healthy lifestyle. That’s the 30-thousand-foot view, so let’s zoom in closer. If you’re planning to have sex, it’s best to take your recommended dose of Viagra ahead of time. However, healthcare providers sometimes prescribe multiple PDE5 inhibitors at once to help optimize the effects of each medication for an individual case — usually as a compounded medication with reduced dosages.

Warnings & Precautions

You need to get treatment for it as soon as possible to help prevent damage to your penis. If you have an erection that lasts more than four hours, call your care team right away. Treatments for erectile dysfunction are big business, and online scams abound. If you do buy medicines over the internet: Check to see if an online pharmacy is legitimate. Never order medicines from an online pharmacy that doesn't list its phone number and physical address, has prices that seem too good to be true, or tells you that no prescription is needed.

When to take

Also stay away from ones that don't have a licensed pharmacist on staff to answer your questions. Some illegal businesses sell fake versions of real medicines, which can be dangerous or might not work. In the United States, the National Association of Boards of Pharmacy can tell you whether an online pharmacy is licensed and in good standing. If you live in another country, check to see if pharmacy association or regulation agencies offer services like these. Make sure you get the right prescription and dose.

Related medical questions

When you order medicines and when you receive them in the mail, make sure they're the exact dose and type prescribed by your doctor or other health care professional. The dose is the amount of medicine you take. Don't be fooled into buying "herbal viagra." Never take any medicines that claim to be the "herbal" or nonprescription version of an oral medicine for ED. These aren't an effective option, and some contain harmful substances. Our caring team of Mayo Clinic experts can help you with your health concerns.