Patient Awareness and Education Campaigns in India

Archived from the original on 5 March 2016. "Towards a decade of detecting new analogues of sildenafil, tadalafil and vardenafil in food supplements: a history, analytical aspects and health risks". "Detection of sildenafil analogues in herbal products for erectile dysfunction". Archived from the original on 4 March 2016. ^ "FDA Warns Consumers About Dangerous Ingredients in "Dietary Supplements" Promoted for Sexual Enhancement".

Year	Estimated Sales (Million USD)	Market Share (%)	Growth Rate (%)
2020	120	15	5
2021	135	16	12
2022	150	17	11
2023	165	18	10

Archived from the original on 18 January 2017. ^ "Hidden Risks of Erectile Dysfunction 'Treatments' Sold Online". Archived from the original on 23 April 2019. ^ R. Baselt, Disposition of Toxic Drugs and Chemicals in Man, 9th edition, Biomedical Publications, Seal Beach, CA, 2011, pp. Archived from the original (PDF) on 10 September 2011. "Structure of the catalytic domain of human phosphodiesterase 5 with bound drug molecules".

What are the uses of Viagra®? : Diseases or Health Issues treated by Viagra®

^ McCambridge J, Mitcheson L, Hunt N, Winstock A (March 2006). "The rise of Viagra among British illicit drug users: 5-year survey data". "Does marijuana use play a role in the recreational use of sildenafil?". Archived from the original on 26 January 2013. "Sildenafil accelerates reentrainment of circadian rhythms after advancing light schedules". ^ a b Webb DJ, Freestone S, Allen MJ, Muirhead GJ (March 1999).

Brand Name	Manufacturer	Price per Tablet (INR)	Active Ingredient	Approval Status
Viagra	Pfizer India	1000	Sildenafil	Approved
Caverta	Sun Pharma	250	Sildenafil	Approved
Vidalista	Centurion Labs	180	Tadalafil	Approved
Kamagra	Ajanta Pharma	150	Sildenafil	Approved

"Sildenafil citrate and blood-pressure-lowering drugs: results of drug interaction studies with an organic nitrate and generic viagra professional sildenafil 100mg 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.

• Sildenafil was originally developed by Pfizer and later produced generically in India.
• Indian companies hold a significant share of the global sildenafil market.
• Male age group most commonly using Viagra in India ranges from 40 to 60 years.
• Viagra’s effects typically last 4 to 6 hours, depending on individual health.
• The Indian pharmaceutical industry exports sildenafil-based medicines to over 150 countries.
• Some Indian brands produce extra-fast-acting Viagra formulations.
• The World Health Organization recognizes Indian sildenafil drugs as safe when approved.
• Education about proper Viagra use is increasing through Indian health campaigns.
• Pharmacovigilance systems monitor adverse effects of Viagra in the Indian population.
• Research continues into improving bioavailability and reducing side effects of Viagra.

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.

• Viagra helps men achieve and maintain an erection sufficient for sexual activity.
• Indian pharmacies often offer discount programs on generic Viagra.
• Education campaigns in India aim to increase awareness of erectile dysfunction treatment.
• The safety profile of Indian Viagra is comparable to international standards when used correctly.
• Some Indian brands of Viagra include trademarks like Revatio, Viagra, and Kamagra.
• Viagra is sometimes used off-label for other medical conditions in India.
• It’s vital to store Viagra in a cool, dry place away from direct sunlight.
• Men with heart problems should consult a doctor before using Viagra.
• Indian regulators periodically review sildenafil products for quality, safety, and efficacy.
• Online reviews can help consumers identify trusted sources of Indian Viagra.

"Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond".

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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! ^ Boolell M, Allen MJ, 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". "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.

• Viagra is a popular medication used to treat erectile dysfunction in men.
• In India, Viagra is available both by prescription and over-the-counter in some areas.
• The active ingredient in Viagra is sildenafil citrate, which helps increase blood flow to the penis.
• Indian pharmaceutical companies manufacture generic versions of Viagra at lower costs.
• Buying Viagra online from reputable Indian pharmacies offers convenience and affordability.
• It is important to consult a doctor before using Viagra to ensure safety and proper dosage.
• Common side effects of Viagra include headaches, dizziness, flushing, and nasal congestion.
• Viagra should be taken about an hour before sexual activity for optimal results.
• Indian regulations require Sildenafil products to meet safety standards for sale and distribution.
• Use of Viagra is not recommended for individuals taking nitrate medications.

"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.

Weefsel Pharma - A Worldwide Leading Generic Viagra® Manufacturer and Exporter in India

"Raynaud's phenomenon and digital ischaemia--pharmacologic approach and alternative treatment options". "Efficacy of Sildenafil on healthy humans in high‑altitude hypoxia at rest and during exercise: A meta‑analysis". "Interventions for preventing high altitude illness: Part 1. Archived from the original on 10 June 2017. ^ "FDA Updates Labeling for Viagra, Cialis and Levitra for Rare Post-Marketing Reports of Eye Problems" (Press release).

Are you currently using Sildenafil (Viagra, Revatio)?

Archived from the original on 22 October 2016. "Vision disorders and phosphodiesterase type 5 inhibitors: a review of the evidence to date". ^ "FDA Announces Revisions to Labels for Cialis, Levitra and Viagra". "Drug interactions with phosphodiesterase-5 inhibitors used for the treatment of erectile dysfunction or pulmonary hypertension". "Pharmacology and drug interaction effects of the phosphodiesterase 5 inhibitors: focus on alpha-blocker interactions".

How is sildenafil supplied (dosage forms)?

Use of sildenafil (Viagra) in patients with cardiovascular disease. 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. Archived from the original on 9 January 2009.

Method	Description	Effectiveness Rating	Popularity (%)
Herbal Remedies	Using herbs like Ashwagandha	Moderate	30
Yoga and Meditation	Stress reduction and focus	Variable	45
Acupuncture	Needle therapy for circulation	Limited	10
Ayurvedic Medicines	Herbal formulations from Ayurveda	Varies	15

Archived from the original on 22 February 2021.

Side Effects

In 2018, Viagra Connect, a particular formulation of Sildenafil marketed by Pfizer, became available for sale without a prescription in the UK. Archived from the original on 12 October 2020. ^ "Viagra 25mg film-coated tablets Summary of Product Characteristics (SmPC)". ^ "Viagra Connect 50 mg film-coated tablets Summary of Product Characteristics (SmPC)". Archived from the original on 13 August 2020.

Does sildenafil interact with foods or drinks?

Archived from the original on 11 October 2020. 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.

Pulmonary hypertension

Archived from the original on 23 April 2020. 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". ^ 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".

Viagra® Dosage Forms Manufactured by Weefsel Pharma

"Young men add Viagra to their drug arsenal". 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". Archived from the original on 9 September 2017.

Chemical synthesis

U.S. 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".

What should I do if I accidentally use too much sildenafil?

"Generic Viagra: Two versions of sildenafil hit the market today". 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".

Regional issues

"Strategies for managing sexual dysfunction induced by antidepressant medication". The Cochrane Database of Systematic Reviews (5) CD003382. Archived from the original on 10 October 2020. "Efficacy and safety cheap viagra online of sildenafil treatment in pulmonary arterial hypertension: a systematic review". Archived from the original on 29 August 2021. ^ "Viagra to go generic in 2017 according to Pfizer agreement". Archived from the original on 1 December 2017.

Substituents of Viagra® (Sildenafil)

Proceedings of the National Academy of Sciences of the United States of America. "Source: Roger Clemens, host of athletes pop Viagra to help onfield performance". Archived from the original on 14 August 2020. "Bears' Brandon Marshall says some NFL players use Viagra .. on the Field". "Sex, Drugs and That Little Blue Pill".

What side effects could I expect?

[117][118][119] A UK patent held by Pfizer on the use of PDE5 inhibitors (see below) as treatment of impotence was invalidated in 2000 because of obviousness; this decision was upheld on appeal in 2002. Manufacture and sale of sildenafil citrate drugs known as "generic Viagra" is common in India, where Pfizer's patent claim does not apply. Brand names include Kamagra (Ajanta Pharma), Silagra (Cipla), Edegra (Sun Pharmaceutical), Penegra (Zydus Cadila), Manly (Cooper Pharma) and Zenegra (Alkem Laboratories). Sildenafil was reclassified in New Zealand in 2014 so it could be bought over the counter from a pharmacist. It is thought that this reduced sales over the Internet and was safer as males could be referred for medical advice if appropriate.

Raynaud's phenomenon

In 1999 South Korea granted two patents to Pfizer related to sildenafil. The first document guaranteed sole production and sale of the substance until 2012, while the second gave Pfizer the exclusive use to treating erectile dysfunction with sildenafil until 2014. [123] In 2011 Hanmi Pharmaceutical and CJ CheilJedang launched a suit against the exclusive use patent. The Korean Court system made a ruling against Pfizer in June 2012, allowing for the unhindered domestic production of generic prescription sildenafil. In 2012, Viagra lost its position as the top selling erectile dysfunction treatment in South Korea.

Recreational use

This development was credited largely "due to the introduction of generic products." Generic sildenafil became publicly available in May. 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. Archived from the original on 6 December 2017. "Why Pfizer Is About to Slash Viagra's Price in Half".

• Erectile dysfunction affects a significant percentage of men in India.
• Viagra’s popularity in India has grown due to social and demographic factors.
• Indian doctors often prescribe Viagra for age-related sexual health issues.
• The stigma around ED in India is reducing with greater awareness and available treatment.
• FDA-approved generics in India must adhere to strict manufacturing and testing standards.
• The Indian market provides a variety of dosages to suit individual needs.
• Some Indian pharmacies offer home delivery of Viagra with prescription validation.
• The cost-effectiveness of Indian Viagra makes it a preferred choice worldwide.
• Women in India are increasingly advocating for sexual health products including ED medications.
• Continued research in India aims to develop new formulations for erectile dysfunction.

Archived from the original on 7 December 2017. "Pfizer to lose patent of drug Viagra, Indian companies gear up with copycat versions: Pfizer's patent for the formulation of Viagra, used to treat impotence in men, ends in the US in 2020".