Viagra's Other Uses
Efficacy and safety of intracavernosal alprostadil in men with erectile dysfunction. Treatment of men with erectile dysfunction with transurethral alprostadil.
- Viagra can improve quality of life for men with ED.
- It has a rapid metabolism, often cleared within 4 hours.
- Erectile dysfunction may indicate underlying health problems needing attention.
- Some people experience back pain or muscle aches as side effects.
- It is recommended to avoid fatty foods close to the time of taking Viagra.
- Using Viagra without medical supervision is unsafe.
- Erectile response to Viagra depends on psychological and physical factors.
- The medication is available at pharmacies with a valid prescription.
Clinical Guidelines Panel on Erectile Dysfunction: summary report on the treatment of organic erectile dysfunction. Nitric oxide as a mediator of relaxation of the corpus cavernosum in response to nonadrenergic, noncholinergic neurotransmission. N Engl J Med 1992;326:90-94 Andersson, K-E, Wagner, G.
4. What and when you eat can impair the effectiveness of Viagra®.
; T. Garland, Lawrence, N.J.; M. Gittelman, North Miami, Fla.; D. Gleason, Tucson, Ariz.; F. Govier, Seattle; L.
Oral Administration
Hoffman, Gurnee, Ill.; J.M. Kaufman, Aurora, Colo.; I. Klimberg, Ocala, Fla.; V. Longo, New London, Conn.; T. Malloy, Philadelphia; A.
What is Viagra’s form?
McCullough, New York; J. McMurray, Huntsville, Ala.; D.F. ; J Susset, Providence, R.I.; J. Tuttle, Lexington, Ky.; G. Wells, Birmingham, Ala.; C. Physiology of penile erection.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Professional | 100mg | 360 + 6 Pills | 527.09€ 501.99€ | |
| Viagra Professional | 100mg | 90 + 2 Pills | 207.09€ 197.23€ | |
| Viagra Super Active | 100mg | 60 + 8 Pills | 116.84€ 111.28€ | |
| Viagra Soft Tabs | 100mg | 20 Pills | 62.99€ 59.99€ | |
| Viagra Original | 100mg | 64 + 4 Pills | 264.15€ 251.57€ | |
| Viagra Generic | 100mg | 120 + 6 Pills | 149.50€ 142.38€ | |
| Viagra Generic | 200mg | 90 + 6 Pills | 170.79€ 162.66€ | |
| Viagra Generic | 200mg | 10 Pills | 40.96€ 39.01€ | |
| Viagra Generic | 25mg | 360 + 10 Pills | 213.68€ 203.50€ | |
| Viagra Original | 100mg | 76 + 4 Pills | 306.59€ 291.99€ | |
| Viagra Generic | 200mg | 180 + 10 Pills | 277.56€ 264.34€ | |
| Viagra Generic | 200mg | 30 + 2 Pills | 83.07€ 79.11€ | |
| Viagra Super Active | 100mg | 120 + 16 Pills | 198.37€ 188.92€ | |
| Viagra Soft Tabs | 100mg | 270 + 10 Pills | 419.95€ 399.95€ | |
| Viagra Generic | 100mg | 60 + 4 Pills | 96.36€ 91.77€ | |
| Viagra Generic | 150mg | 10 Pills | 36.73€ 34.98€ |
The role of nitric oxide in the physiology of erection. Sildenafil: an orally active type 5 cyclic GMP-specific phosphodiesterase inhibitor for the treatment of penile erectile dysfunction.
Why trust our experts?
We are indebted to all the investigators who participated in the trials; to Dr. Ian Osterloh and Dr. David Cox of Pfizer for their help with the study design and logistics; to Dr. Michael Collins and Dr. Michael Smith of Pfizer for their assistance with data analysis; and to Dr.
Drug forms and uses
Patricia Leinen and Dr. Michael Sweeney for aid in the preparation of the manuscript. The other members of the Sildenafil Study Group are S. Auerbach, Newport Beach, Calif.; A.L. Burnett, Baltimore; R.
Pulmonary hypertension
Castellanos, Fort Myers, Fla.; L. Charles, Stratford, N.J.; F. Eid, New York; R. Feldman, Waterbury, Conn.; W. Fitch III, San Antonio, Tex. Sildenafil, a novel effective oral therapy for male erectile dysfunction. Br J Urol 1996;78:257-261 Rosen, RC, Riley, A, Wagner, G, Osterloh, IH, Kirkpatrick, J, Mishra, A. The International Index of Erectile Function (IIEF): a multidimensional scale for assessment of erectile dysfunction.
5. Viagra® comes in different doses.
White, Mobile, Ala.; J. Young, Laguna Hills, Calif.; and N. Zinner, Torrance, Calif. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. Sex-ual behavior in the human male. Riley, AJ, Athanasiadis, L. Impotence and its non-surgical management. Br J Clin Pract 1997;51:99-103 Any commercial reuse of NEJM Group content requires permission. From the Department of Urology, Boston University Medical Center, Boston (I.G. ); the Department of Urology, University of California, San Francisco (T.F.L. ); the Department of Urology, University of Southern California, Los Angeles, and the Male Clinic, Santa Monica, Calif.
Vision Problems
In the dose-escalation study, 9 men (6 percent) stopped taking sildenafil and 13 men (8 percent) stopped taking placebo. One man stopped taking sildenafil because of treatment-related headache and flushing, and one man stopped because of an insufficient response. Laboratory-test results indicated no evidence of sildenafil-induced abnormalities. The most frequently reported adverse effects of sildenafil in the two studies were transient headache, flushing, dyspepsia, and rhinitis (Table 3). Transient visual disturbances (i.e., changes in the perception of color hue or brightness) were reported by some men.
Can Viagra be crushed, split, or chewed?
The frequency of these adverse effects increased with increasing doses of sildenafil, but the symptoms were usually mild and lasted a few minutes to a few hours after dosing. No man reported priapism during the studies. Of the 225 men enrolled in the open-label extension study, 207 (92 percent) completed an additional 32 weeks of sildenafil treatment. Four men (2 percent) withdrew because of treatment-related adverse effects (headache in two, intermittent flushing and blurred vision in one, and groin pain and headache in one). We found that sildenafil improves sexual function in men with erectile dysfunction.
Study of Flexible Dose Escalation, Efficacy, and Safety with a Long-Term, Open-Label Extension
In keeping with sildenafil's mode of action (i.e., the drug causes erection only in response to sexual stimulation), the studies were performed entirely in a natural environment, which meant that we had to rely on the men's own reports of efficacy. However, the self-administered International Index of Erectile Function has a high degree of sensitivity and specificity for detecting treatment-related changes in men with erectile dysfunction.13 This questionnaire, together with the global-efficacy question, provided a comprehensive assessment of erectile function during a specified recall period (four weeks), and the cialis or viagra for women event log provided viagra black information about individual events during treatment. The men's partners were questioned in each of the studies, and although the results corroborated the men's efficacy assessments, only 25 percent of the partners completed the optional questionnaire. Recognizing the fact that in most men erectile dysfunction is a multifactorial problem, we enrolled men with a broad variety of causes of erectile dysfunction. The identification of an organic abnormality does not establish it as the cause of erectile dysfunction.14 Conversely, failure to identify an organic cause does not prove a psychogenic origin. (H.P.-N.); the Department of Psychiatry, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, Piscataway, N.J. ); the Department of Urology, University of Virginia, Charlottesville (W.D.S. Select the format you want to export the citation of this publication. Multi-view semi-supervised adversarial attention network for drug repurposing, Computer Methods and Programs in Biomedicine, 282, (109406), (2026).
- Research continues into new formulations of ED medications inspired by Viagra.
- Viagra's effects can differ based on individual blood chemistry.
- Combining Viagra with recreational drugs is highly dangerous.
- Men with neural or psychological ED might benefit from therapy alongside medication.
- The drug was a result of research into vascular health and nitric oxide.
- Viagra can be used as a diagnostic tool in certain medical tests.
- It is crucial to follow prescribed doses to avoid adverse reactions.
- Lifestyle changes, like exercise and diet, can improve ED alongside medication.
Multi‐Target Mechanisms of Moroccan Aphrodisiac Plants: An Integrative Computational and Phytochemical Investigation, Food Science & Nutrition, 14, 5, (2026). Artificial intelligence in drug research and development: a review of methods and applications in drug repurposing, Briefings in Bioinformatics, 27, 3, (2026). Endocrine-metabolic crosstalk in erectile dysfunction: mechanistic insights and therapeutic implications, International Journal of Impotence Research, (2026). Therapeutic applications of phosphodiesterase inhibitors in male reproductive health: narrative review, Sexual Medicine Reviews, 14, 2, (2026). Oral suspension versus tablet sildenafil for erectile dysfunction: a prospective multicenter comparative study on patient satisfaction, International Journal of Impotence Research, (2026). Low‐intensity shockwave therapy for erectile dysfunction: An abridged Cochrane review, BJU International, 137, 6, (949-957), (2026). Current state of the problem, Andrology and Genital Surgery, 25, 4, (33-40), (2026).
| Aspect | Description | Notes |
|---|---|---|
| FDA Approval | Approved for erectile dysfunction and pulmonary hypertension | Ensures safety and efficacy |
| Prescription Requirement | Yes, prescription needed in most countries | Legal distribution restrictions |
| Counterfeit Risks | High risk online; authenticity varies | Purchase from reputable sources |
| Patent Duration | Patented until 2020s; generics now available | Price reduction post-patent expiry |
| Advertising Regulations | Strict rules on direct-to-consumer advertising | Limits false or misleading claims |
Emerging Trends and Research Focus in Erectile Dysfunction Treatment: A 1993–2023 Bibliometric Analysis, Andrologia, 2026, 1, (2026). VIAGRA- sildenafil citrate tablet, film coated Pfizer Laboratories Div Pfizer Inc For most patients, the recommended dose is 50 mg taken, as needed, approximately 1 hour before sexual activity. However, VIAGRA may be taken anywhere from 30 minutes to 4 hours before sexual activity. The maximum recommended dosing frequency is once per day. Based on effectiveness and toleration, the dose may be increased to a maximum recommended dose of 100 mg or decreased to 25 mg. VIAGRA was shown to potentiate the hypotensive effects of nitrates and its administration in patients who use nitric oxide donors such as organic nitrates or organic nitrites in any form is therefore contraindicated [see Contraindications (4.1), Drug Interactions (7.1), and Clinical Pharmacology (12.2)].
3. There are limitations as to how often you can take Viagra®.
In the dose–response study, increasing doses of sildenafil (25 to 100 mg) were increasingly effective in improving the frequency of penetration and the maintenance of erections after penetration, the mean score for the erectile-function domain of the International Index, and the percentage of men reporting better erections. In the dose-escalation study, sildenafil treatment was associated with improvements in the frequency of penetration and the maintenance of erections after penetration. The therapeutic response to sildenafil was similar in men with various causes of erectile dysfunction. The mean scores after sildenafil therapy approached those of normal men of the same age. The men we studied had a normal level of sexual desire, as might be expected of men with erectile dysfunction who enter a clinical trial,13 and sildenafil did not alter that level.
Recreational use
Successful sexual intercourse was therefore a key end point for these men. Overall, the results of the efficacy assessments demonstrated that sildenafil significantly improved erectile function and quadrupled the success of intercourse, with effectiveness maintained for at least six months. Its main adverse effects were headache, flushing, dyspepsia, and visual disturbances and were usually mild. Only one man with a visual disturbance discontinued treatment, and he also had flushing. Few men discontinued sildenafil, suggesting a relatively high level of drug tolerability and acceptance.
Is Viagra safe to use?
No man had priapism after sildenafil treatment. Sildenafil has modest vasodilator properties but no effect on heart rate. The American Urological Association Panel on the Treatment of Organic Erectile Dysfunction stated that the ultimate goal is a therapy that is reliable, has minimal side effects, and is simple to use.6 Sildenafil appears to meet these specifications. Oral therapy permits discreet administration and is less invasive than some other treatment options, including injections into the corpus cavernosum, transurethral drug delivery, and prosthesis implantation. Goldstein, Lue, Padma-Nathan, Rosen, and Steers have served as consultants to Pfizer, manufacturer of sildenafil, as well as to other companies making products for the treatment of erectile dysfunction. When VIAGRA is co-administered with an alpha-blocker, patients should be stable on alpha-blocker therapy prior to initiating VIAGRA treatment and VIAGRA should be initiated at 25 mg [see Warnings and Precautions (5.5), Drug Interactions (7.2), and Clinical Pharmacology (12.2)].