FULL PRESCRIBING INFORMATION: CONTENTS*

Concomitant use of nitric oxide donors, organic nitrites and nitrates,[30] such as: nitroglycerinisosorbide mononitrateisosorbide dinitratesodium nitroprussidealkyl nitrites (commonly known as "poppers") Concomitant use of soluble guanylyl cyclase stimulators, such as riociguat Sildenafil should not be used if sexual activity is inadvisable due to underlying cardiovascular risk factors.

• The yellow Viagra pill is sometimes marketed as a generic or branded version.
• Its effectiveness depends on the individual's health and dosage taken.
• Store the pill in a cool, dry place away from direct sunlight.
• The pill may be taken with or without food, but high-fat meals can delay effects.
• Some yellow Viagra tablets contain 25mg, 50mg, or 100mg of sildenafil.
• Always follow prescribed doses; overdosing can lead to severe health risks.

Sildenafil's popularity with young adults has increased over the years.

1.2 Benign Prostatic Hyperplasia

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. [32] Sildenafil's brand name, Viagra, is widely recognized in popular culture, and the drug's association with treating erectile dysfunction has led to its recreational use.

Medication/Substance	Effect	Risk	Notes
Nitrates	Can cause dangerous drop in blood pressure	Severe hypotension	Avoid altogether
Alpha-blockers	Potentiates blood pressure lowering	Dizziness, fainting	Use caution
CYP3A4 inhibitors	Increases sildenafil levels	Increased side effects	Consult doctor
Alcohol	Enhances side effects	Dizziness, headache	Limit intake

[33] The reasons behind such use include the belief that the drug female viagra uk increases libido, improves sexual performance,[33] or permanently increases penis size.

Purpose	Recommended Dosage	Typical Onset	Duration of Effect	Notes
Erectile Dysfunction	50-100 mg	30-60 min	4-6 hours	Taken with water
Pulmonary Hypertension	25 mg	15-30 min	4 hours	Prescribed by doctor
Recreational Use	50-100 mg	30-60 min	4-6 hours	Off-label, caution advised

[34] Studies on the effects of sildenafil when used recreationally are limited, but suggest it has little effect when used by those who do not have erectile dysfunction. In one study, a 25 mg dose was shown to cause no significant change in erectile quality, but did reduce the postejaculatory refractory time.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	200mg	10 Pills	40.96€ 39.01€	Buy
Viagra Generic	50mg	180 + 8 Pills	158.82€ 151.26€	Buy
Viagra Generic	100mg	120 + 6 Pills	149.50€ 142.38€	Buy
Viagra Professional	100mg	20 Pills	71.14€ 67.75€	Buy
Viagra Generic	200mg	180 + 10 Pills	277.56€ 264.34€	Buy
Viagra Professional	100mg	30 Pills	88.92€ 84.69€	Buy
Viagra Generic	25mg	30 + 4 Pills	47.97€ 45.69€	Buy
Viagra Generic	200mg	90 + 6 Pills	170.79€ 162.66€	Buy
Viagra Oral Jelly	100mg	220 + 18 Sachets	562.28€ 535.50€	Buy
Viagra Generic	25mg	180 + 6 Pills	154.93€ 147.55€	Buy
Viagra Original	100mg	12 Pills	72.54€ 69.09€	Buy
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€	Buy

[35] This study also noted a significant placebo effect in the control group.

Images for T20

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). [8][10] Onset when taken orally is typically within twenty minutes and lasts for about two hours.

Erectile dysfunction

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. Unprescribed recreational use of sildenafil and other PDE5 inhibitors is noted as particularly high among users of illegal drugs.

• The yellow Viagra pill is a version of sildenafil used to treat erectile dysfunction.
• It typically comes in a small, discreet yellow tablet for easy consumption.
• The yellow color helps differentiate it from other medications or doses.
• Often marketed online, but always verify authenticity before purchase.
• The standard dosage for Viagra is usually 50mg or 100mg, regardless of color.
• Consult a healthcare provider before using any form of Viagra or similar pills.

[36] Sildenafil is sometimes used to counteract the effects of other substances, often illicit. [33] Some users mix it with methylenedioxymethamphetamine (MDMA, ecstasy), other stimulants, or opiates in an attempt to compensate for the common side effect of erectile dysfunction, a combination known as "sextasy", "rockin' and rollin'", "hammerheading", or "trail mix". [33] Mixing it with amyl nitrite, another vasodilator, is particularly dangerous and potentially fatal.

• The yellow Viagra pill is usually taken about an hour before sexual activity.
• Its effects can last for approximately 4 to 6 hours.
• Individuals taking other medications should check for potential drug interactions.
• Yellow Viagra can improve confidence and usability in sexual performance.
• It is not intended for use by women or children.
• Regular use without medical advice can lead to dependency or health issues.

The 2007 Ig Nobel Prize in aviation went to Patricia V. Agostino, Santiago A. Plano, and Diego A. Golombek of Universidad Nacional de Quilmes, Argentina, for their discovery that sildenafil helps treat jet lag recovery in hamsters.

6.1 Clinical Trials Experience

[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. 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 generic viagra professional sildenafil 100mg 3 million prescriptions.

How ED meds work: A refresher

[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). 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. Professional athletes have been documented using sildenafil, believing the opening of their blood vessels will enrich their muscles. In turn, they believe it will enhance their performances.

17.1 Nitrates

What Should I Avoid While Taking Tadalafil Tablets? Do not use other ED medicines or ED treatments while taking tadalafil tablets. Do not drink too much alcohol when taking tadalafil tablets (for example, 5 glasses of wine or 5 shots of whiskey). What Are The Possible Side Effects Of Tadalafil Tablets? See “What Is The Most Important Information I Should Know About Tadalafil Tablets?” The most common side effects with tadalafil tablets are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose.

Regional issues

Store tadalafil tablets at 20º to 25ºC (68º to 77ºF); excursions permitted between 15° and 30°C (59° and 86°F). For more information, go to or call toll-free 1-877-835-5472. What Are The Ingredients In Tadalafil Tablets? This Patient Information has been approved by the U.S. Food and Drug Administration All brands listed are trademark of their respective owner. Acetildenafil and other synthetic structural analogs of sildenafil which are PDE5 inhibitors have been found as adulterants in a number of "herbal" aphrodisiac products sold over-the-counter. [41] These analogs have not undergone any of the rigorous testing that drugs like sildenafil have passed, and thus have unknown side-effect profiles.

• The yellow Viagra pill may have different branding depending on the manufacturer.
• It works by increasing blood flow to the penis during sexual arousal.
• Common side effects include headaches, flushing, and nasal congestion.
• Do not take the yellow Viagra pill with nitrates or certain heart medications.
• The onset of action for Viagra is typically 30 to 60 minutes after ingestion.
• It should not be taken more than once per day to avoid overdose.

[42] Some attempts have been made to ban these drugs, but progress has been slow so far, as, even in those jurisdictions that have laws targeting designer drugs, the laws are drafted to ban analogs of illegal drugs of abuse, rather than analogs of prescription medicines. However, at least one court case has resulted in a product being taken off the market. The US Food and Drug Administration (FDA) has banned numerous products claiming to be Eurycoma longifolia that, in fact, contain only analogs of sildenafil.

7.1 Potential for Pharmacodynamic Interactions with Tadalafil

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 viagra over the counter duration of vasospastic episodes. [9] As of 2016,[update] their role more generally in Raynaud's was not clear. Sildenafil has shown some potential for improving exercise performance at high altitudes. However, its overall efficacy is not clear.

Effectiveness by condition:

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. Patients thus taking the drug may experience colorvision abnormalities. [44][45][46] Sellers of such fake herbals typically respond by just changing the names of their products. Sildenafil and/or N-desmethylsildenafil, its major active metabolite, may be quantified in plasma, serum, or whole blood to assess pharmacokinetic status in those receiving the drug therapeutically, to confirm the diagnosis in potential poisoning victims, or to assist in the forensic investigation in a case of fatal overdose.

Sildenafil (Viagra) contraindications

Care should be exercised by people who are also taking protease inhibitors for the treatment of HIV infection. Protease inhibitors inhibit the metabolism of sildenafil, effectively multiplying the plasma levels of sildenafil, increasing the incidence and severity of side effects. Those using protease inhibitors are recommended to limit their use of sildenafil to no more than one 25 mg dose every 48 hours. [4] Other drugs that interfere with the metabolism of sildenafil include erythromycin and cimetidine, both of which can also lead to prolonged plasma half-life levels. The use of sildenafil and an α1 blocker (typically prescribed for hypertension or for urologic conditions, such as benign prostatic hypertrophy) at the same time may lead to low blood pressure, but this effect does not occur if they are taken at least 4 hours apart.