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

How to get Sildenafil from Us?

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Raynaud's phenomenon

Runs locally on your device so your data stays private. Alt text editor Show alt text editor right away when adding an image Helps you make sure all your images have alt text. 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.

How is sildenafil supplied (dosage forms)?

[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. Common side effects include headaches, heartburn, and flushed skin. [8] Caution is advised in those with viagra black 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. Tentative evidence suggests that sildenafil may help males who experience antidepressant-induced erectile dysfunction.

Side Effect	Frequency (%)	Severity Level	Advice
Headache	35	Mild	Analgesics recommended
Flushing	25	Mild	Hydration advised
Nasal Congestion	15	Mild	Decongestants may help
Dizziness	10	Moderate	Avoid driving until stable
Vision Changes	5	Mild	Seek medical advice if persistent

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.

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	25mg	180 + 6 Pills	154.93€ 147.55€	Buy
Viagra Soft Tabs	100mg	10 Pills	36.93€ 35.17€	Buy
Viagra Super Active	100mg	180 + 20 Pills	280.97€ 267.59€	Buy
Viagra Original	100mg	76 + 4 Pills	306.59€ 291.99€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Professional	100mg	270 + 6 Pills	456.97€ 435.21€	Buy
Viagra Super Active	100mg	270 + 30 Pills	390.61€ 372.01€	Buy
Viagra Original	100mg	92 + 4 Pills	362.88€ 345.60€	Buy
Viagra Generic	200mg	120 + 8 Pills	204.80€ 195.05€	Buy
Viagra Generic	150mg	60 + 4 Pills	111.25€ 105.95€	Buy
Viagra Generic	100mg	10 Pills	28.91€ 27.53€	Buy
Viagra Generic	100mg	20 Pills	45.58€ 43.41€	Buy
Viagra Original	100mg	14 + 2 Pills	89.03€ 84.79€	Buy
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€	Buy
Viagra Super Active	100mg	20 + 4 Pills	48.05€ 45.76€	Buy
Viagra Generic	100mg	90 + 6 Pills	129.02€ 122.88€	Buy

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.

Viagra® Dosage Forms Manufactured by Weefsel Pharma

All PharmacyChecker-accredited online pharmacies, regardless of tier, meet the same high standards defined in the PharmacyChecker International Pharmacy Verification Program. Learn more about Tier 1 international pharmacies. The Tier 1 icon indicates that an online pharmacy fills prescriptions only through its own pharmacy or through dispensing partners located in countries with advanced regulatory oversight. The icon means that this online pharmacy accredited by PharmacyChecker fills prescription orders through either their own pharmacy or dispensing pharmacy partners located in Australia, India, Mauritius, New Zealand, Turkey, the UK, or Canada. Please note that all PharmacyChecker-accredited online pharmacies (tier 1 and non-tier 1) meet the same high standards as identified in the PharmacyChecker Verification Program.

Jet lag research

For information about Tier 1 international pharmacies click here. PharmacyChecker provides free monthly email updates of the latest prices. If you’re prescribed generic sildenafil citrate (U.S. brand name: Viagra), chances are your medication was made in India. In fact, 65% of companies with active FDA-approved ANDAs for generic Viagra manufacture sildenafil in Indian pharmaceutical facilities, according to a recent review of regulatory filings conducted by PharmacyChecker.

Are you currently using Sildenafil (Viagra, Revatio)?

While the FDA has faced documented challenges in overseeing foreign manufacturing plants, facilities abroad that supply the U.S. market are subject to FDA inspections and must meet the same current Good Manufacturing Practices (cGMP) standards as U.S.-based facilities. India’s global dominance in generic drug manufacturing — built on scale, cost efficiency, and regulatory competence — has helped make sildenafil citrate one of the most affordable prescription medications available today. When sourced safely and through reputable providers, that’s good news for patients seeking a cost-effective treatment for erectile dysfunction. As of June 2025, there are 28 approved Abbreviated New Drug Applications (ANDAs) for sildenafil citrate in oral tablet form, with 3 more tentatively approved for U.S. [9] As of 2016,[update] their role more generally in Raynaud's was not clear.

Adverse effects

or internationally. At PharmacyChecker, we support your right to safe, affordable, and transparent medication access. Through our International Pharmacy Verification Program and ongoing drug sourcing research, PharmacyChecker continues to provide patients worldwide with information about the dispensing source of their medicine, where it is manufactured, and whether it meets the highest international safety standards. One name that instantly hits most of us when it comes to ED medicines, is Viagra® (Sildenafil Citrate). Hence, as a worldwide leading pharmaceutical manufacturing and exporting company, Weefsel Pharma deals in Viagra® tablets along with other pharmaceutical medications and allied products.

Pulmonary hypertension

Let us delve deeper into the most important aspects of Viagra® (Sildenafil) herein. Viagra® is a branded pharmaceutical drug that is used for vasodilation in the human body. NYHA Functional Class II-III Pulmonary arterial hypertension Sildenafil has no direct relaxant effect on isolated human corpus cavernosum but potently enhances the relaxant effect of NO on it. When the NO/cGMP pathway is activated, as occurs with sexual stimulation, inhibition of PDE5 by sildenafil results in increased corpus cavernosum levels of cGMP. Therefore sexual stimulation is required in order for sildenafil to produce its intended beneficial pharmacological effects.

How does sildenafil work (mechanism of action)?

Viagra® or Sildenafil might take about 30 minutes from the time of its ingestion, to show its effects. The terminal phase half-life observed for sildenafil is approximately 3 to 5 hours. Note: Viagra® is also available in various other dosage forms, like oral suspensions, sprays, and injectables as well. This medication can be stored in an airtight container and at a room temperature range of 20°C to 30°C (68°F and 86°F). However, it should be kept away from excess heat and moisture as well. Sildenafil has shown some potential for improving exercise performance at high altitudes.

Medical uses

[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). However, its overall efficacy is not clear.

Overdose/Missed Dose

prescription sales. These approvals are listed in the FDA’s Drugs@FDA database and reflect rigorous manufacturing and bioequivalence standards. Based on label disclosures and manufacturer filings, nearly two-thirds of active manufacturers with ANDAs on file list Indian pharmaceutical facilities as the manufacturing origin for their sildenafil citrate tablets: Based on publicly available data from the FDA’s Drugs@FDA: FDA-Approved Drugs database, the National Institute of Health, National Library of Medicine, and manufacturer disclosures. While generics are predominantly made in India, brand Viagra distributed by Pfizer in the United States is made in France and Ireland. Also in stark contrast: the price of brand vs.

What should I tell my healthcare provider before taking sildenafil?

generic Viagra. According to PharmacyChecker price comparisons, brand Viagra runs patients around $83 per tablet at U.S. pharmacies – and that’s in conjunction with a discount coupon. Generic sildenafil is as little as $0.47 at the same U.S. pharmacies!

Who should not take sildenafil?

That’s a 99% savings thanks to generic availability and the healthy competition it yields. Don’t live in the United States? International online pharmacies also ship generic Viagra (sildenafil) for as low as $0.47 per pill through Indian dispensing partners. The brand Viagra, sourced from a UK dispensing pharmacy, buy female viagra ships worldwide for as low as $7 per pill. There are affordable and safe pathways to obtain Viagra, whether you’re purchasing brand or generic, in the U.S. Sildenafil has been studied for high-altitude pulmonary edema (HAPE), but its use is currently not recommended for that indication.

Aspect	Details	Notes
Legal Status	Over-the-counter sale limited; prescription required	Controlled substance in some states
Regulatory Body	Drugs Controller General of India (DCGI)	Approves drug formulations
Import Regulations	Strict for non-approved foreign brands	Customs require documentation
Advertising Rules	Restrictions on direct-to-consumer ads	Ensures medical guidance

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.

• 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.

[4] Some sildenafil users have complained of seeing everything tinted blue (cyanopsia).

What is Viagra®?

[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. [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. [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.

• 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.

Patients thus taking the drug may experience colorvision abnormalities.

• Indian pharmaceutical firms boast high-quality manufacturing under GMP standards.
• Viagra is often combined with other ED medications for enhanced efficacy in India.
• The sale of Viagra online in India has expanded rapidly over the last decade.
• Some Indian brands of Viagra are available in 25mg, 50mg, and 100mg strengths.
• The drug is generally safe for most men, but must be avoided with certain health conditions.
• In India, purchasing Viagra without a prescription is common but not always recommended.
• The global demand for Indian-made Viagra has increased due to its affordability.
• Viagra's patent expired in India, allowing widespread manufacturing of generics.
• The Indian government regulates the sale of sildenafil-based medications for safety.
• Patients are advised to avoid alcohol and fatty foods with Viagra to improve absorption.

Some complained of blurriness and loss of peripheral vision.

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

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.