[8] It can be taken orally (swallowed by mouth), intravenously (injection into a vein), or through the sublingual route (dissolved under the tongue). [8][10] Onset when taken orally is typically within twenty minutes and lasts for about two hours.

Side Effects

Talk to your doctor if you are using marijuana (cannabis). Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). During pregnancy, sildenafil should be used only when clearly needed. Since high blood pressure in the lungs is a serious condition that can harm both a pregnant woman and her unborn baby, do not stop taking this medication unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, discuss with your doctor right away the benefits and risks of using this medication during pregnancy.

Less common

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug are: Sildenafil can cause a serious drop in your blood pressure when used with nitrates. 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. Sildenafil acts by blocking phosphodiesterase 5 (PDE5), an enzyme that promotes breakdown of cGMP, which regulates blood flow in the penis.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	25mg	30 + 4 Pills	47.97€ 45.69€
Viagra Professional	100mg	30 Pills	88.92€ 84.69€
Viagra Generic	25mg	180 + 6 Pills	154.93€ 147.55€
Viagra Super Active	100mg	180 + 20 Pills	280.97€ 267.59€
Viagra Professional	100mg	180 + 4 Pills	337.30€ 321.24€
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€
Viagra Original	100mg	76 + 4 Pills	306.59€ 291.99€
Viagra Soft Tabs	100mg	90 + 6 Pills	205.31€ 195.53€
Viagra Generic	100mg	120 + 6 Pills	149.50€ 142.38€
Viagra Generic	100mg	20 Pills	45.58€ 43.41€
Viagra Soft Tabs	100mg	120 + 8 Pills	232.21€ 221.15€
Viagra Oral Jelly	100mg	90 + 8 Sachets	258.02€ 245.73€

[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.

How has Viagra been studied?

A serious drop in blood pressure can lead to dizziness, fainting, and rarely heart attack or stroke. Do not use sildenafil with any of the following: certain drugs used to treat chest pain/angina (nitrates such as nitroglycerin, isosorbide) recreational drugs called "poppers" containing amyl or butyl nitrite If you are also taking an alpha blocker medication (such as doxazosin, tamsulosin) to treat an enlarged prostate/BPH or high blood pressure, your blood pressure may get too low which can lead to dizziness or fainting. Your doctor may start treatment with a lower dose of sildenafil to minimize your risk of low blood pressure. Other medications can affect the removal of sildenafil from your body, which may affect how sildenafil works. Examples include azole antifungals (such as itraconazole, ketoconazole), macrolide antibiotics (such as clarithromycin, erythromycin), mifepristone, rifampin, ritonavir, among others.

Drug form and strengths

Do not take this medication with any other product that contains sildenafil or other similar medications for erectile dysfunction-ED or pulmonary hypertension (such as tadalafil, vardenafil). If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669. 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. [13][14] It is available as a generic medication. [15][16] In the United Kingdom, it is available as a pharmacy medicine. The primary indication of sildenafil is treatment of erectile dysfunction (inability to sustain a satisfactory erection to complete sexual intercourse).

25 mg Viagra may be recommended for men with mild to moderate ED.
The medication’s effects typically last around 4-6 hours.
Missing a dose is not typical since Viagra is used as needed.
To maximize safety, inform your doctor of all health conditions.
Patients should avoid grapefruit or grapefruit juice when taking Viagra.
Ensure adequate hydration when using Viagra to prevent dehydration.
Follow up with your doctor if Viagra doesn't produce expected results.

Its use is now one of the standard treatments for erectile dysfunction, including for males with diabetes mellitus.

Adverse effects

Always ask your health care professional for complete information about this product and your specific health needs. Selected from NATIONAL DRUG DATA FILE (NDDF) data included with permission and copyrighted by First Databank, Inc., 2019. This copyrighted material has been downloaded from a licensed data provider. The above information is intended to supplement, not substitute for, the expertise and judgment of your health care professional. You should consult your health care professional before taking any drug, changing your diet, or commencing or discontinuing any course viagra click and collect of treatment.

Dosage Modifications

Just been sildenafil by my Gp and have concerns about side effects especially vision and heart beat per minute Question posted · View member profile · Last updated The information on this page reflects personal experiences shared by our community members. It is not reviewed for medical accuracy and should not replace professional medical advice. My PCP prescribed me a 100mg dose! I was also worried about potential side effects. I split each pill into 1/4’s, so I cut them in half then in half again. Tentative evidence suggests that sildenafil may help males who experience antidepressant-induced erectile dysfunction.

The 25 mg dose is often sufficient for men with occasional erectile difficulties.
It is not a substitute for healthy lifestyle choices like quitting smoking.
Can be used in conjunction with psychosexual therapy for comprehensive care.
The risk of cardiovascular events during sexual activity is slightly increased.
Patients with left ventricular outflow obstruction should avoid.
The medication is soluble in water but is designed for oral ingestion.
Breaking a non-scored tablet can result in inaccurate dosing.
It is one component of sexual health, which also includes emotional connection.
Some men report facial flushing or a stuffy nose more at higher doses.
The benefit of daily low-dose use is maintaining readiness versus planning.
A sudden drop in blood pressure upon standing (orthostasis) can occur.

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

What measures are being taken to ensure the safe and effective use of Viagra?

Symptoms of overdose may include: severe dizziness, fainting, painful/prolonged erection. Do not share this medication with others. Store at room temperature away from light and moisture. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so.

How can I tell if Viagra’s not working?

Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company. HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Sildenafil has shown some potential for improving exercise performance at high altitudes.

The drug's action is localized to the penis; systemic effects are generally mild.
Starting at a low dose allows assessment of individual pharmacokinetics.
It is not a "party drug" and using it recreationally can be hazardous.
Men with multiple myeloma or leukemia may have contraindications.
Can be used by men who have undergone kidney transplantation, with doctor approval.
The cost-effectiveness of generic sildenafil has increased treatment access.
Some men may find the side effects diminish with continued use.
It does not treat underlying vascular disease, a common cause of ED.
Penile implants or injections are alternatives if oral therapy fails.
The decision to use medication should be a shared one between patient and doctor.
Regular check-ups are important to monitor for any new health developments.

However, its overall efficacy is not clear.

25 mg Viagra is often used for those who experience side effects at higher doses.
Regular use of Viagra can improve erectile response over time.
The medication works by increasing blood flow to the penis.
Viagra should not be taken more than once per day.
Consult your doctor if you experience visual disturbances while taking Viagra.
Patients with heart problems should be cautious and inform their doctor.
Viagra is not a cure but can help manage erectile dysfunction symptoms.

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. [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.

Side Effect	Severity	Frequency	Notes
Headache	Mild to moderate	Common	Usually temporary
Flushing	Mild	Common	Especially after intake
Nasal congestion	Mild	Less common	Usually resolves itself

Patients thus taking the drug may experience colorvision abnormalities.

Who shouldn’t use Viagra tablets?

I still get pretty stuffed up and sometimes my face flushes, but that’s it. As my doctor told me, this is one of the safest medications in the world, they regularly prescribe it to elderly men who have had heart attacks. I’ve never had any vision, hearing, or fast heart beat issues. I’ve also found it temporarily reduces my blood pressure for about a day after I take a dose. We are all different, but this has been a good medication for me.

Oral Administration

Remember you can always start with a smaller dose and take more, but you can’t take less after a large dose. Sildenafil prescribing info & package insert (for Health Professionals) Try searching for what you seek or ask your own question. 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 viagra jellys treatment of certain symptoms in secondary Raynaud's phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. Some complained of blurriness and loss of peripheral vision. In July 2005, the US Food and Drug Administration (FDA) updated labeling for tadalafil (Cialis), vardenafil (Levitra), and sildenafil (Viagra) to reflect a small number of post-marketing reports of sudden vision loss, while acknowledging that "...it is not possible to determine whether these oral medicines for erectile dysfunction were the cause of the loss of eyesight or whether the problem is related to other factors such as high blood pressure or diabetes, or to a combination of these problems. "[25] A careful review of pooled data from clinical trials containing well documented information about the dose and duration of exposure to the drug for a large number of patients, yields no evidence for an increased risk of non-arteritic anterior ischemic optic neuropathy or other adverse ocular events associated with PDE5 inhibitor use. Rare but serious adverse effects found through postmarketing surveillance include prolonged erections, severe low blood pressure, myocardial infarction (heart attack), ventricular arrhythmias, stroke, increased intraocular pressure, and sudden hearing loss. [4] In October 2007, the FDA announced that the labeling for all PDE5 inhibitors, including sildenafil, required a more prominent warning of the potential risk of sudden hearing loss. Care should be exercised by people who are also taking protease inhibitors for the treatment of HIV infection.