The Mechanism of Action: How Sildenafil Works

Based on study information, the American Urological Association considers Viagra and Levitra to be similarly effective in improving the ability of males to get and maintain erections.

Detection in biological fluids

Therefore, these medications can cause very similar side effects. Below are examples of these side effects. These lists contain up to 10 of the most common mild side effects that can occur with Viagra, with Cialis, or with both drugs (when taken individually). Can occur with Viagra:mild and temporary vision changes, such as a blue tinge to your vision, blurred vision, or sensitivity to lightnauseadizzinessrash mild and temporary vision changes, such as a blue tinge to your vision, blurred vision, or sensitivity to light Can occur with Cialis:pain in your arms or legsupper respiratory tract infectioncoughdiarrhea Can occur with both Viagra and Cialis:headacheflushingindigestionnasal congestion (stuffy nose)back painmuscle pain The following list contains examples of serious side effects that can occur with either Viagra or Cialis. priapism (long-lasting and sometimes painful erection) non-arteritic anterior ischemic optic neuropathy (NAION), which is an eye condition that causes damage to your optic nerve low blood pressure, if the drugs are taken with certain other medications cardiovascular problems, such as heart attack, irregular heartbeat, and stroke, all of which mainly occur in people with heart disease Viagra and Cialis have different approved uses, but they’re both used to treat ED.

When to call your doctor

The use of Viagra and Cialis in treating ED has been directly compared in several clinical studies. One review of these studies found the two drugs were similarly effective in improving the ability of males to have and maintain erections. However, researchers found that people who took Cialis had improved confidence in their sexual ability. So, the people were more likely to prefer Cialis over Viagra. This is likely due to the long-lasting effect of Cialis, which allows people to have more spontaneous sex.

Can I take Viagra by snorting it?

(Cialis’s dosing schedule allows less planning for when you need to take a dose before having sex.) The study also found that males who took Cialis were more likely to have back or muscle pain than those taking Viagra. But people taking Cialis were less likely to have flushing compared with those taking Viagra. Viagra and Cialis are both brand-name drugs. Generic forms of both drugs are available. Brand-name medications usually cost more sildenafil viagra price than generics. Viagra and Levitra are both brand-name drugs.

• Sildenafil improves erectile function when sexual stimulation occurs.
• It is not effective as a cure for ED, only as a treatment.
• Ensure privacy and a proper environment for medication use.
• Keep out of reach of children for safety reasons.

The actual price you’ll pay for either drug depends on your insurance plan, your location, and the pharmacy you use.

Product	Dosage	Quantity + Bonus	Price
Viagra Oral Jelly	100mg	21 Sachets	78.66€ 74.91€	Buy
Viagra Soft Tabs	100mg	120 + 8 Pills	232.21€ 221.15€	Buy
Viagra Soft Tabs	100mg	60 + 6 Pills	152.94€ 145.66€	Buy
Viagra Generic	150mg	270 + 10 Pills	326.61€ 311.06€	Buy
Viagra Generic	150mg	60 + 4 Pills	111.25€ 105.95€	Buy
Viagra Generic	25mg	270 + 8 Pills	184.26€ 175.49€	Buy
Viagra Super Active	100mg	60 + 8 Pills	116.84€ 111.28€	Buy
Viagra Generic	200mg	360 + 10 Pills	481.98€ 459.03€	Buy
Viagra Generic	25mg	30 + 4 Pills	47.97€ 45.69€	Buy
Viagra Generic	25mg	180 + 6 Pills	154.93€ 147.55€	Buy
Viagra Generic	200mg	180 + 10 Pills	277.56€ 264.34€	Buy
Viagra Original	100mg	92 + 4 Pills	362.88€ 345.60€	Buy
Viagra Original	100mg	64 + 4 Pills	264.15€ 251.57€	Buy

Here are answers to some frequently asked questions about Viagra. No, studies haven’t shown that Viagra makes sex last longer. However, the drug can help you to get and keep an erection. And studies have shown that Viagra can increase satisfaction from sex. No, Viagra doesn’t increase the size of a male’s penis. There aren’t any known ways to permanently increase the size of a penis. Viagra helps you get an erection if you’re sexually aroused. This may temporarily increase the size of your penis, until the erection goes away.

Mechanism of action

The actual price you’ll pay for either drug depends on your insurance plan, your location, your prescribed dosage, and the pharmacy you use. In addition to being available as the brand-name drug Viagra, it’s available as a generic drug. Here we look at how Viagra and sildenafil are alike and different. Viagra, which contains the active drug sildenafil, is a brand-name drug. But sildenafil is also available as a generic medication.

What is sildenafil used for?

A generic medication is an exact copy of the active drug in a brand-name medication. The Food and Drug Administration (FDA) considers generics to be just as safe and effective as the original drug. Generics tend to cost less than brand-name drugs. Viagra is approved to treat ED in males ages 18 years and older. It comes as tablets that you take by mouth.

Related treatment guides

Viagra is available in the following strengths: Like Viagra, certain forms of sildenafil are approved to treat ED in males ages 18 years and older. For example, sildenafil 25-mg, 50-mg, and 100-mg tablets are approved for this use. In addition, sildenafil also comes as 20-mg tablets, an oral liquid suspension, and a solution given by injection. These forms of sildenafil are generic versions of a brand-name drug called Revatio. But unlike Viagra, they’re not used to treat ED. But Viagra doesn’t permanently increase the size of your penis.

What happens if I overdose?

In addition, Cialis is approved to treat symptoms caused by benign prostatic hyperplasia (BPH). BPH refers to having an enlarged prostate. These symptoms include needing to pass urine frequently or urgently. They can also include having a weak flow of urine or being unable to fully empty your bladder. Viagra and Cialis both come as tablets that you take by mouth.

Can I take sildenafil every day?

With Viagra, you’ll take the drug between 30 minutes and 4 hours before you plan to have sex. The medication can help you get an erection up to 4 hours after you’ve taken a dose. Viagra shouldn’t be taken more than once a day. With Cialis, you’ll take a dose at least 30 minutes before you plan to have sex. This medication can help you get an erection up to 36 hours after you’ve taken a dose.

Does Viagra treat ED that’s related to diabetes?

Cialis shouldn’t be taken more than once a day. While you can take Cialis just as needed for ED treatment, another option is to take a low dose of the drug regularly each day. Doing this can help you to get an erection at any time when you’re sexually aroused. This may help make sex more spontaneous for you. Viagra and Cialis both contain the same type of drug. Yes, Viagra is generally considered safe to use if: it’s been prescribed by a doctor who knows your medical history, and you’re taking the drug as directed Viagra’s safety has been shown in several clinical studies.

Society and culture

Viagra and Levitra both contain the same type of drug. These lists contain up to 10 of the most common mild side effects that can occur with Viagra, with Levitra, or with both drugs (when taken individually). Can occur with Viagra:mild and temporary vision changes, such as a blue tinge to your vision, blurred vision, or sensitivity to lightrashmuscle pain mild and temporary vision changes, such as a blue tinge to your vision, blurred vision, or sensitivity to light Can occur with Levitra:sinusitis (inflammation in your sinuses)flu-like symptoms, such as fever, chills, and body aches flu-like symptoms, such as fever, chills, and body aches Can occur with both Viagra and Levitra:headacheflushingindigestionnasal congestion (stuffy nose)nauseadizzinessback pain The following list contains examples of serious side effects that can occur with either Viagra or Levitra. priapism (long-lasting and sometimes painful erection) non-arteritic anterior ischemic optic neuropathy (NAION), which is an eye condition that causes damage to your optic nerve low blood pressure, if the drugs are taken with certain other medications cardiovascular problems, such as heart attack, irregular heartbeat, and stroke, all of which occur mainly in people with heart disease The only condition both Viagra and Levitra are used to treat is ED. The use of Viagra and Levitra in treating ED has been directly compared in several clinical studies and compared in several reviews of studies. The drug does have a few serious side effects, but these rarely occur.

• Use of generic Viagra is contraindicated for those with heart conditions.
• Regular medical check-ups are advised while using sildenafil.
• The medication may cause priapism, an erection lasting over 4 hours.
• Alcohol intake can impair the effectiveness of the drug.

For more information about the side effects of Viagra, see the section “Viagra side effects” above. However, Viagra may not be safe to use if you have certain medical conditions, including heart disease.

• Generic Viagra offers a cost-effective alternative to brand-name Sildenafil.
• It may be prescribed for various durations depending on the patient.
• Proper hydration can enhance the medication's effectiveness.
• Immediate medical attention is required in case of allergic reactions.

And it’s not safe to use Viagra if you’re taking certain other medications, such as nitrates. (Nitrates are sometimes used to treat chest pain that’s related to heart problems.) This is why you should only take Viagra if it’s been prescribed by a doctor who knows your medical history.

Non-medical use

Revatio and these forms of sildenafil are used to treat pulmonary arterial hypertension (PAH). With PAH, you have high blood pressure in the artery between your heart and lungs. This means that generic sildenafil is just as effective in treating ED as Viagra is when it’s taken at the same doses as Viagra. It also means that sildenafil and Viagra can cause the same side effects. For information on the possible side effects of Viagra, see the “Viagra side effects” section.

Can Viagra be crushed, split, or chewed?

The actual price you’ll pay for either drug depends on your insurance plan, your location, and your prescribed dosage. Like Cialis (described above), Levitra is also prescribed for similar uses as Viagra. Here we look at how Viagra and Levitra are alike and different. The brand-name form of Levitra was discontinued in 2021. However, the active drug in Levitra is available as a generic medication called vardenafil.

Does Viagra help with premature ejaculation?

The generic form has the same use, dosage, safety, and effectiveness as the brand-name drug. The information about Levitra in this article also applies to vardenafil unless otherwise noted. Viagra contains the drug sildenafil, viagra jelly sachets uk while Levitra contains the drug vardenafil. Both Viagra and Levitra belong to a group of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Viagra and Levitra are both approved to treat erectile dysfunction (ED) in males ages 18 years and older. For more information about conditions that may make it unsafe for you to take Viagra , see the “Viagra precautions” section.

• Avoid taking other medications that affect blood pressure without consultation.
• The medication should be used only once every 24 hours.
• Patients should disclose all health conditions before starting treatment.
• Adjustments to dose may be necessary based on age and health status.

And for more information about taking other medications with Viagra, see the “Viagra interactions” section.

Form	Strength	Packaging Options	Brand Examples	Notes
Tablet	50 mg	Blister packs of 4, 10, 20 tablets	Viagra, Kamagra, Sildenafil	Standard oral tablet, prescription or OTC
Chewable Tablet	50 mg	Bottles of 20 tablets	Viagra Chew, Sildenafil Melt	Faster absorption, easier to take
Dispersible Tablet	50 mg	Disintegration strips	Sildenafil Disper, Generic Quad	Dissolves in water, convenient

That depends on how high your blood pressure is. For example, if you have high blood pressure that’s not managed, your heart may not be healthy enough for sexual activity.

Comparing Drug Interactions

Viagra and Levitra both come as tablets that you take by mouth. With Viagra, you’ll take a dose between 30 minutes and 4 hours before you plan to have sex. With Levitra, you’ll take a dose about 1 hour before sexual activity. The medications can help you get an erection up to 4 hours after you take a dose. But neither drug should be taken more than once a day.