Pfizer’s Greenstone and Digital Men’s Health Clinic Roman Collaborate to Offer Patients Remote Access to the Only FDA-Approved Authorized Generic Version of Viagra® (sildenafil citrate)
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What to avoid
PDE-5 inhibitors appear to have significant but moderate efficacy in secondary [Raynaud's phenomenon]. "Sublingual sildenafil in the treatment of erectile dysfunction: faster onset of action with less dose". "The Serendipitous Story of Sildenafil: An Unexpected Oral Therapy for Erectile Dysfunction". ^ "Drug Approval Package: Viagra (sildenafil citrate) NDA #020895". U.S.
Professional resources
Food and Drug Administration (FDA). Archived from the original on 31 March 2021. Archived from the original on 12 August 2025. ^ "Sildenafil Drug Usage Statistics, United States, 2014 - 2023". "Generic Viagra: Two versions of sildenafil hit the market today".
Can I get Viagra without a prescription?
Archived from the original on 25 November 2018. Archived from the original on 12 February 2022. "With Viagra Now Available Over-The-Counter In The U.K., Will The U.S. "Phosphodiesterase inhibitors for erectile dysfunction in patients with diabetes mellitus". "Strategies for managing sexual dysfunction induced by antidepressant medication". "Sildenafil citrate and blood-pressure-lowering drugs: results of drug interaction studies with an organic nitrate and a calcium antagonist". ^ Goldstein I, Lue TF, Padma-Nathan H, Rosen RC, Steers WD, Wicker PA (May 1998). "Oral sildenafil in the treatment of erectile dysfunction.
- Viagra was initially a surprise success after initial clinical trials.
- Pfizer's marketing included educational campaigns for healthcare professionals.
- The drug's availability increased global discussions on sexual wellness.
- Viagra is often mentioned in discussions about aging and vitality.
- Pfizer has continued to innovate within the sildenafil portfolio.
- The efficacy of Viagra can depend on individual health factors.
- Viagra's popularity has prompted discussions on sexual performance enhancement.
- Pfizer faced challenges in differentiating Viagra in competitive markets.
- The medication plays a significant role in sexual health treatment options.
Archived from the original on 14 January 2012. "Onset and duration of action of sildenafil for the treatment of erectile dysfunction". ^ "Scientist who developed Viagra receives knighthood in New Year's Honours". Archived from the original on 14 January 2023. "Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond". Archived from the original on 26 September 2008. Our clinicians regularly offer patients the opportunity to take part in trials of new drugs and treatments. Morriston Hospital in Swansea, was the first in the world to trial Viagra!
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Super Active | 100mg | 180 + 20 Pills | 280.97€ 267.59€ | |
| Viagra Generic | 150mg | 20 Pills | 55.02€ 52.40€ | |
| Viagra Generic | 25mg | 180 + 6 Pills | 154.93€ 147.55€ | |
| Viagra Generic | 200mg | 90 + 6 Pills | 170.79€ 162.66€ | |
| Viagra Generic | 25mg | 20 Pills | 37.74€ 35.94€ | |
| Viagra Original | 100mg | 14 + 2 Pills | 89.03€ 84.79€ | |
| Viagra Generic | 50mg | 120 + 6 Pills | 129.64€ 123.47€ | |
| Viagra Super Active | 100mg | 60 + 8 Pills | 116.84€ 111.28€ | |
| Viagra Generic | 200mg | 60 + 4 Pills | 125.19€ 119.23€ | |
| Viagra Generic | 50mg | 90 + 6 Pills | 107.37€ 102.26€ |
^ Boolell M, Allen MJ, liquid viagra Ballard SA, Gepi-Attee S, Muirhead GJ, Naylor AM, et al. "Sildenafil: an orally active type 5 cyclic GMP-specific phosphodiesterase inhibitor for the treatment of penile erectile dysfunction". "Sildenafil (Viagra), a potent and selective inhibitor of Type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction". "Drug repositioning: identifying and developing new uses for existing drugs". Archived from the original on 22 April 2019. Archived from the original on 10 June 2019. "Health situation in former communist bloc is dire, says Unicef". Archived from the original on 1 November 2012. ^ Gurevich M, Cormier N, Leedham U, Brown-Bowers A (August 2018). Sexuopharmaceutical use by men as prevention and proficiency".
Safety Advice for Pfizer Viagra 50mg Tablet 2s
American College of Cardiology/American Heart Association". Journal of the American College of Cardiology. ^ "Viagra (Sildenafil Citrate): Side Effects, Interactions, Warning, Dosage & Uses". Archived from the original on 12 July 2018. "Young men add Viagra to their drug arsenal". "Spreading the Word, but What Word is That? Viagra and Male Sexuality in Popular Culture". "A new view of women's sexual problems: Why new? Archived from the original on 3 January 2009. Archived from the original on 12 October 2008.
| Condition | Warning Level | Reason |
|---|---|---|
| Uncontrolled hypertension | High | Risk of severe hypotension |
| Cardiovascular disease | High | Increased cardiac risk |
| Use of nitrate medications | High | Dangerous drop in blood pressure |
| Retinitis pigmentosa | Moderate | Potential retinal complications |
"Sales of Impotence Drugs Fall, Defying Expectations". Archived from the original on 11 October 2007. ^ "Pfizer Courting More Controversy with Viagra 'Advergaming'". Archived from the original on 19 December 2019. Archived from the original on 6 May 2018. Archived from the original on 9 January 2009. Archived from the original on 22 February 2021. ^ a b "Viagra now available over the counter without prescription in the UK". Archived from the original on 26 March 2021. Archived from the original on 8 December 2013. "The coming generics threat to Pfizer's Viagra brand just got scarier". Archived from the original on 9 September 2017.
| Region | Units Sold (Millions) | Revenue (USD Millions) | Market Share (%) |
|---|---|---|---|
| North America | 10 | 1500 | 40 |
| Europe | 8 | 1200 | 32 |
| Asia-Pacific | 6 | 900 | 18 |
| Latin America | 4 | 600 | 10 |
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- Sildenafil, the active compound in Viagra, was discovered in 1989.
- Pfizer's Viagra was initially marketed as a treatment for angina.
- Pfizer's marketing campaigns made Viagra a household name globally.
- The drug's efficacy was reinforced by numerous clinical trials.
- Viagra has been associated with a boost in male confidence and sexual satisfaction.
- The pill is available in different forms, including oral tablets.
- Pfizer faced legal challenges due to marketing practices for Viagra.
- The drug's popularity led to increased interest in ED and its treatment.
- Viagra's patented form was initially exclusive to Pfizer before generics emerged.
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Chỉ định
The Cochrane Database of Systematic Reviews (5) CD003382. Archived from the original on 10 October 2020. "Efficacy and safety of sildenafil treatment in pulmonary arterial hypertension: a systematic review". Archived from the original on 29 August 2021. "Raynaud's phenomenon and digital ischaemia--pharmacologic approach and alternative treatment options".
What to do in case you take too much Viagra
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Pediatric Precautions
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Viagra side effects
Archived from the original on 4 September 2014. "Recreational use and misuse of phosphodiesterase 5 inhibitors". Archived from the original on 21 August 2016. "Sildenafil does not improve sexual function in men without erectile dysfunction but does reduce the postorgasmic refractory time". ^ McCambridge J, Mitcheson L, Hunt N, Winstock A (March 2006). Retrieved 17 June 2024 – via Business Wire. Archived from the original on 17 June 2024. "Viagra patent expires in June, says Brazilian court".
- Viagra is the brand name for sildenafil, developed by Pfizer to treat erectile dysfunction.
- Sildenafil was originally created to treat hypertension and angina.
- Viagra was approved by the FDA in 1998 for erectile dysfunction treatment.
- Pfizer's Viagra is available by prescription in many countries worldwide.
- The active ingredient, sildenafil, works by increasing blood flow to the penis.
- Viagra's effectiveness typically begins within 30-60 minutes of intake.
- Common side effects include headaches, flushing, and nasal congestion.
- Viagra should not be taken with nitrates due to the risk of severe hypotension.
- The drug's patent protection expired in many regions, leading to generic versions.
Archived from the original on 17 April 2012.
Chống chỉ định
Sales of PalPal by Hanmi Pharmaceuticals totalled ₩22 billion or about 86% the market share of Viagra that year. [125] By 2017, there were over 50 generic sildenafil pills available. During that year Viagra sales slumped to 38% that of Palpal. There were 2,958,199 prescriptions for Sildenafil in 2016 in England, compared with 1,042,431 in 2006. In 2018, Viagra Connect, a particular formulation of Sildenafil marketed by Pfizer, became available for sale without a prescription in the UK.
Altitude sickness
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Elderly Precautions
Archived from the original on 11 November 2020. ^ Nichols DJ, Muirhead GJ, Harness JA (6 March 2002). "Pharmacokinetics of sildenafil after single oral doses in healthy male subjects: absolute bioavailability, food effects and dose proportionality". The American Society of Health-System Pharmacists. Archived from the original on 23 April 2020. ^ "Revatio patent ruled invalid for lack of sound prediction and obviousness".