WARNINGS AND PRECAUTIONS

Sildenafil acts by blocking phosphodiesterase 5 (PDE5), an enzyme that promotes breakdown of cGMP, which regulates blood flow in the penis. [8] It requires sexual arousal to work, and does not by itself cause or increase sexual arousal. [8] It also results in dilation of the blood vessels in the lungs.

Country	Average Cost per Tablet	Insurance Coverage	Notes
USA	$15-$25	Often covered with prescription	Varies by plan
UK	£10-£20	Sometimes reimbursed	Depends on NHS prescription
Australia	AUD 20-30	Limited coverage	Out-of-pocket expense
Canada	CAD 20-30	Usually not covered	Prescription required

Pfizer originally discovered the medication in 1989 while looking for a treatment for angina. [11] It was approved for medical use in the United States and in the European Union in 1998. [5][8][11][12] In 2023, it was the 151st most commonly prescribed medication in the United States, with more than 3 million prescriptions.

5.6 Adverse Reactions with the Concomitant Use of Ritonavir

VIAGRA helps a man with erectile dysfunction get and keep an erection only when he is sexually excited (stimulated). VIAGRA is not for use in women or children. It is not known if VIAGRA is safe and effective in women or children under 18 years of age. take medicines called nitrates (such as nitroglycerin) use street drugs called "poppers" such as amyl nitrate or amyl nitrite, and butyl nitrate take any medicines called guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in VIAGRA and REVATIO, or any of the ingredients in VIAGRA. See the end of this leaflet for a complete list of ingredients in VIAGRA.

Raynaud's phenomenon

What should I tell my healthcare provider before taking VIAGRA? Before you take VIAGRA, tell your healthcare provider if you: have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve or heart failure have had heart surgery within the last 6 months have low blood pressure, or high blood pressure that is not controlled have had an erection that lasted for more than 4 hours have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia have retinitis pigmentosa, a rare genetic (runs in families) eye disease have ever had severe vision loss, including an eye problem called non-arteritic anterior ischemic optic neuropathy (NAION) have kidney problems or are having kidney dialysis Tell your healthcare provider about all the medicines you take1, including prescription and over-the-counter medicines, vitamins, and herbal supplements. VIAGRA may affect the way other medicines work, and other medicines may affect the way VIAGRA works causing side effects. Especially tell your healthcare provider if you take any of the following: medicines called guanylate cyclase stimulators, such as riociguat (Adempas) medicines called alpha blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). In some patients, the use of VIAGRA with alpha-blockers can lead to a drop in blood pressure or to fainting.

What happens with ED?

medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase) or atazanavir sulfate (Reyataz) some types of oral antifungal medicines, such as ketoconazole (Nizoral), and itraconazole (Sporanox) some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin other medicines that treat high blood pressure VIAGRA contains sildenafil, which is the same medicine found in another drug called REVATIO. VIAGRA should not be used with REVATIO or with other PAH treatments containing sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil]). Ask your healthcare provider or pharmacist for a list of these medicines, if you are not sure. Keep a list of them to show to your healthcare provider and pharmacist when you get a new medicine. Take VIAGRA exactly as your healthcare provider tells you to take it. [13][14] It is available as a generic medication.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	50mg	20 Pills	40.52€ 38.59€	Buy
Viagra Generic	25mg	270 + 8 Pills	184.26€ 175.49€	Buy
Viagra Generic	25mg	90 + 6 Pills	105.03€ 100.03€	Buy
Kamagra Oral Jelly	100mg	220 + 18 Sachets	662.24€ 630.70€	Buy
Kamagra Polo	100mg	60 + 4 Pills	189.39€ 180.37€	Buy
Viagra Generic	150mg	20 Pills	55.02€ 52.40€	Buy
Viagra Generic	50mg	10 Pills	26.87€ 25.59€	Buy
Kamagra Soft Tabs	100mg	84 + 4 Pills	233.05€ 221.95€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Generic	50mg	180 + 8 Pills	158.82€ 151.26€	Buy
Kamagra Oral Jelly	100mg	110 + 9 Sachets	334.87€ 318.92€	Buy
Viagra Generic	25mg	30 + 4 Pills	47.97€ 45.69€	Buy
Viagra Generic	25mg	20 Pills	37.74€ 35.94€	Buy
Viagra Generic	100mg	20 Pills	45.58€ 43.41€	Buy
Kamagra Oral Jelly	100mg	90 + 8 Sachets	303.56€ 289.10€	Buy
Kamagra Soft Tabs	100mg	20 Pills	79.79€ 75.99€	Buy
Viagra Generic	100mg	360 + 10 Pills	330.21€ 314.49€	Buy

[15][16] In the United Kingdom, it is available as a pharmacy medicine.

• Pfizer Sildenafil 100mg offers a quick onset of action for most users.
• It’s advisable to try the medication in a comfortable setting.
• Sildenafil is effective for many men with ED but not for everyone.
• The drug is often prescribed after other treatments have failed.
• It’s important to discuss all health issues with your healthcare provider.

The primary indication of sildenafil is treatment of erectile dysfunction (inability to sustain a satisfactory erection to complete sexual intercourse).

• Sildenafil 100mg may interact with other medications, like antidepressants.
• Do not use if you have a history of allergic reactions to sildenafil.
• The medication can cause vision changes, such as blurred vision.
• Use caution if you have kidney or liver problems.
• Regular exercise and a healthy diet support erectile health.

Its use is now one of the standard treatments for erectile dysfunction, including for males with diabetes mellitus. Tentative evidence suggests that sildenafil may help males who experience antidepressant-induced erectile dysfunction.

What is Viagra?

Tell your healthcare provider if you have any side effect that bothers you or does not go away. These are not all the possible side effects of VIAGRA. For more information, ask your healthcare provider or pharmacist. Call sildenafil white your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Does Viagra increase the size of a man’s penis?

Store VIAGRA at room temperature between 68°F to 77°F (20°C to 25°C). Keep VIAGRA and all medicines out of the reach of children. General information about the safe and effective use of VIAGRA. Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. This Patient Information leaflet summarizes the most important information about VIAGRA.

Patient resources

You can ask your healthcare provider or pharmacist for information about VIAGRA that is written for health professionals. For more information, go to or call 1-888-4VIAGRA Inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake This Patient Information has been approved by the U.S. Food and Drug Administration. This product's label may have been updated. For current full prescribing information, please visit Viagra (sildenafil citrate), Revatio (sildenafil), Cardura (doxazosin mesylate), and Minipress (prazosin HCl) are registered trademarks of Pfizer Inc. While sildenafil improves some markers of disease in people with pulmonary arterial hypertension, it does not appear to affect the risk of death or serious side effects. Sildenafil and other PDE5 inhibitors are used off-label to alleviate vasospasm and treat severe ischemia and ulcers in fingers and toes for people with secondary Raynaud's phenomenon;[9][21] these drugs have moderate efficacy for reducing the frequency and duration of vasospastic episodes.

Country	Approval Status	Regulatory Agency	Notes
USA	Approved	FDA	Prescribed for ED
UK	Approved	MHRA	Licensed medication
Canada	Approved	Health Canada	Available by prescription
Australia	Approved	TGA	Prescription required

[9] As of 2016,[update] their role more generally in Raynaud's was not clear.

• Sildenafil’s development has revolutionized ED treatment options.
• The medication is absorbed quickly, with peak effects in 30-2 hours.
• Regular check-ups can ensure the safe use of sildenafil.
• Sildenafil is contraindicated with certain genetic eye disorders.
• Always purchase medications from reputable sources to avoid counterfeits.

Sildenafil has shown some potential for improving exercise performance at high altitudes. However, its overall efficacy is not clear. Sildenafil has been studied for high-altitude pulmonary edema (HAPE), but its use is currently not recommended for that indication. In clinical trials, the most common adverse effects of sildenafil use included headache, flushing, indigestion, nasal congestion, and impaired vision, including photophobia and blurred vision.

5.1 Cardiovascular

Your healthcare provider will tell you how much VIAGRA to take and when to take it. Your healthcare provider may change your dose if needed. Take VIAGRA about 1 hour before sexual activity. You may take VIAGRA between 30 minutes to 4 hours before sexual activity if needed. VIAGRA can be taken with or without food.

Does Viagra help with premature ejaculation?

If you take VIAGRA after a high fat meal (such as a cheeseburger and french fries), VIAGRA may take a little longer to start working Do not take VIAGRA more than 1 time a day. If you accidentally take too much VIAGRA, call your doctor or go to the nearest hospital emergency room right away. What are the possible side effects of VIAGRA? an erection that will not go away (priapism). If it is not treated right away, priapism can permanently damage your penis.

Drug details

sudden vision loss in one or both eyes. Stop taking VIAGRA and call your healthcare provider right away if you have sudden vision loss in one or both eyes. If you have these symptoms, stop taking VIAGRA and contact a doctor right away. The most common side effects of VIAGRA are: abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision In addition, heart attack, stroke, irregular heartbeats and death have happened rarely in men taking VIAGRA. It is not known if VIAGRA caused these problems. [4] Some sildenafil users have complained of seeing everything tinted blue (cyanopsia). [24] This cyanopsia can be explained because sildenafil, while selective for PDE5, does have some affinity for PDE6, which is the phosphodiesterase found in the retina.

• Pfizer Sildenafil 100mg can cause priapism; seek medical help if it lasts over 4 hours.
• Check with your doctor about possible drug interactions before starting.
• Avoid grapefruit juice when taking sildenafil, as it can affect absorption.
• If you experience chest pain, seek emergency medical attention.
• Use only the prescribed dosage; overdose can be dangerous.

Patients thus taking the drug may experience colorvision abnormalities.

Efectos secundarios

The other brands listed are trademarks of their respective owners and are not trademarks of Pfizer Inc. 2 (UNII: L06K8R7DQK)ALUMINUM OXIDE (UNII: LMI26O6933)Product CharacteristicsColorBLUEScoreno scoreShapeDIAMOND (rounded diamond)Size14mmFlavorImprint CodeVGR100;PfizerContainsPackagingNDC:0069-4220-3030 in 1 BOTTLE; Type 0: Not a Combination Product03/27/199801/31/2029NDC:0069-4220-66100 in 1 BOTTLE; Type 0: Not a Combination Product03/27/199802/29/2028Marketing InformationNDANDA02089503/27/199801/31/2029Labeler - PFIZER LABORATORIES DIV PFIZER INC (134489525) Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4][8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8] It can be taken orally (swallowed by mouth), intravenously (injection into a vein), or through the sublingual route (dissolved under the tongue).

Can you take Viagra if you have high blood pressure?

[8][10] Onset when taken orally is typically within twenty minutes and lasts for about two hours. Common side effects include headaches, heartburn, and flushed skin. [8] Caution is advised in those with cardiovascular disease. [8] Rare but serious side effects include vision problems, hearing loss, and prolonged erection (priapism) that can lead to damage to the penis. [8] Sildenafil should not be taken by people on nitric oxide donors such as nitroglycerin, as this may result in a serious drop in blood pressure. Some complained of blurriness and loss of peripheral vision.