Sildenafil was evaluated primarily at doses of 25 mg, 50 mg and 100 mg in 21 randomized, double-blind, placebo-controlled trials of up to 6 months in duration, using a variety of study designs (fixed dose, titration, parallel, crossover). Sildenafil was administered to more than 3,000 patients aged 19 to 87 years, with ED of various etiologies (organic, psychogenic, mixed) with a mean duration of 5 years.
Medical uses
Sildenafil demonstrated statistically significant improvement compared to placebo in all 21 studies. The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo.Efficacy Endpoints in Controlled Clinical StudiesThe effectiveness of sildenafil was evaluated in most studies using several assessment instruments. The primary measure in the principal studies was a sexual function questionnaire (the International Index of Erectile Function - IIEF) administered during a 4-week treatment-free run-in period, at baseline, at follow-up visits, and at the end of double-blind, placebo-controlled, at-home treatment. Two of the questions from the IIEF served as primary study endpoints; categorical responses were elicited to questions about (1) the ability to achieve erections sufficient for sexual intercourse and (2) the maintenance of erections after penetration. The patient addressed both questions at the final visit for the last 4 weeks of the study. The possible categorical responses to these questions were (0) no attempted intercourse, (1) never or almost never, (2) a few times, (3) sometimes, (4) most times, and (5) almost always or always. Also collected as part of the IIEF was information about other aspects of sexual function, including information on erectile function, orgasm, desire, satisfaction with intercourse, and overall sexual satisfaction. Sexual function data were also recorded by patients in a daily diary. In addition, patients were asked a global efficacy question and an optional partner questionnaire was administered.Efficacy Results from Controlled Clinical StudiesThe effect on one of the major end points, maintenance of erections after penetration, is shown in Figure 6, for the pooled results of 5 fixed-dose, dose-response studies of greater than one month duration, showing response according to baseline function.
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Results with all doses have been pooled, but scores showed greater improvement at the 50 and 100 mg doses than at 25 mg.
| Age Group | Percentage of Users | Common Usage Reasons | Health Considerations |
|---|---|---|---|
| 30-40 years | 35% | Erectile dysfunction following lifestyle changes | Generally healthy, mild side effects |
| 41-50 years | 40% | Onset of age-related ED | Monitor blood pressure and cardiovascular health |
| 51+ years | 25% | Chronic health conditions, ED | Under medical supervision recommended |
The pattern of responses was similar for the other principal question, the ability to achieve an erection sufficient for intercourse. The titration studies, in which most patients received 100 mg, showed similar results. Figure 6 shows that regardless of the baseline levels of function, subsequent function in patients treated with sildenafil was better than that seen in patients treated with placebo. At the same time, on-treatment function was better in treated patients who were less impaired at baseline.Figure 6. Effect of Sildenafil tablets and Placebo on Maintenance of Erection by Baseline Score.The frequency of patients reporting improvement of erections in response to a global question in four of the randomized, double-blind, parallel, placebo-controlled fixed dose studies (1797 patients) of 12 to 24 weeks duration is shown in Figure 7.
- Sildenafil 50 mg can be purchased online from Indian e-pharmacies.
- Ensure the pharmacy provides a valid prescription if required by law.
- Generic sildenafil is a cost-effective alternative to branded options.
- It is advisable to avoid alcohol when taking sildenafil for better results.
- Use caution if combining sildenafil with other ED medications or supplements.
- People with kidney or liver issues should seek medical advice before use.
- The medication does not protect against sexually transmitted infections.
- Always store sildenafil in a cool, dry place away from light.
- Consult a healthcare professional if adverse reactions occur after taking sildenafil.
These patients had erectile dysfunction at baseline that was characterized by median categorical scores of 2 (a few times) on principal IIEF questions. Erectile dysfunction was attributed to organic (58%; generally not characterized, but including diabetes and excluding spinal cord injury), psychogenic (17%), or mixed (24%) etiologies. Sixty-three percent, 74%, and 82% of the patients on 25 mg, 50 mg and 100 mg of sildenafil tablets, respectively, reported an improvement in their erections, compared to 24% on placebo. In the titration studies (n=644) (with most patients eventually receiving sildenafil online ireland 100 mg), results were similar.Figure 7. Percentage of Patients Reporting an Improvement in Erections.The patients in studies had varying degrees of ED.
- Sildenafil 50 mg is a widely accessible medication in India's healthcare market.
- It is essential to understand potential drug interactions before use.
- Some patients may experience dizziness or lightheadedness when standing.
- Use caution when combining sildenafil with antihypertensive medications.
- Avoid excessive alcohol consumption while using sildenafil.
- Patients with a history of heart attacks should consult a doctor before use.
- The medication does not provide protection against pregnancy or STDs.
- Regular medical checkups help ensure safe and effective use of sildenafil.
- Proper storage and handling ensure medication potency and safety.
One-third to one-half of the subjects in these studies reported successful intercourse at least once during a 4-week, treatment-free run-in period.In many of the studies, of both fixed dose and titration designs, daily diaries were kept by patients.
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At the same time, on-treatment function was better in treated patients who were less impaired at baseline.Figure 6. Effect of Sildenafil tablets and Placebo on Maintenance of Erection by Baseline Score.The frequency of patients reporting improvement of erections in response to a global question in four of the randomized, double-blind, parallel, placebo-controlled fixed dose studies (1797 patients) of 12 to 24 weeks duration is shown in Figure 7. These patients had erectile dysfunction at baseline that was characterized by median categorical scores of 2 (a few times) on principal IIEF questions. Erectile dysfunction was attributed to organic (58%; generally not characterized, but including diabetes and excluding spinal cord injury), psychogenic (17%), or mixed (24%) etiologies. Sixty-three percent, 74%, and 82% of the patients on 25 mg, 50 mg and 100 mg of sildenafil tablets, respectively, reported an improvement in their erections, compared to 24% on placebo.
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In the titration studies (n=644) (with most patients eventually receiving sildenafil online ireland 100 mg), results were similar.Figure 7. Percentage of Patients Reporting an Improvement in Erections.The patients in studies had varying degrees of ED. One-third to one-half of the subjects in these studies reported successful intercourse at least once during a 4-week, treatment-free run-in period.In many of the studies, of both fixed dose and titration designs, daily diaries were kept by patients. In these studies, involving about 1600 patients, analyses of patient diaries showed no effect of sildenafil on rates of attempted intercourse (about 2 per week), but there was clear treatment-related improvement in sexual function: per patient weekly success rates averaged 1.3 on 50-100 mg of sildenafil tablets vs 0.4 on placebo; similarly, group mean success rates (total successes divided by total attempts) were about 66% on sildenafil vs about 20% on placebo.During 3 to 6 months of double-blind treatment or longer-term (1 year), open-label studies, few patients withdrew from active treatment for any reason, including lack of effectiveness. At the end of the long-term study, 88% of patients reported that sildenafil improved their erections.Men with untreated ED had relatively low baseline scores for all aspects of sexual function measured (again using a 5-point scale) in the IIEF.
What should happen if a dose is missed?
Sildenafil improved these aspects of sexual function: frequency, firmness and maintenance of erections; frequency of orgasm; frequency and level of desire; frequency, satisfaction and enjoyment of intercourse; and overall relationship satisfaction.One randomized, double-blind, flexible-dose, placebo-controlled study included only patients with erectile dysfunction attributed to complications of diabetes mellitus (n=268). As in the other titration studies, patients were started on 50 mg and allowed to adjust the dose up to 100 mg or down to 25 mg of sildenafil tablets; all patients, however, were receiving 50 mg or 100 mg at the end of the study. There were highly statistically significant improvements on the two principal IIEF questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) on sildenafil compared to placebo. On a global improvement question, 57% of sildenafil patients reported improved erections versus 10% on placebo. Diary data indicated that on sildenafil, 48% of intercourse attempts were successful versus 12% on placebo.One randomized, double-blind, placebo-controlled, crossover, flexible-dose (up to 100 mg) study of patients with erectile dysfunction resulting from spinal cord injury (n=178) was conducted. In these studies, involving about 1600 patients, analyses of patient diaries showed no effect of sildenafil on rates of attempted intercourse (about 2 per week), but there was clear treatment-related improvement in sexual function: per patient weekly success rates averaged 1.3 on 50-100 mg of sildenafil tablets vs 0.4 on placebo; similarly, group mean success rates (total successes divided by total attempts) were about 66% on sildenafil vs about 20% on placebo.During 3 to 6 months of double-blind treatment or longer-term (1 year), open-label studies, few patients withdrew from active treatment for any reason, including lack of effectiveness. At the end of the long-term study, 88% of patients reported that sildenafil improved their erections.Men with untreated ED had relatively low baseline scores for all aspects of sexual function measured (again using a 5-point scale) in the IIEF. Sildenafil improved these aspects of sexual function: frequency, firmness and maintenance of erections; frequency of orgasm; frequency and level of desire; frequency, satisfaction and enjoyment of intercourse; and overall relationship satisfaction.One randomized, double-blind, flexible-dose, placebo-controlled study included only patients with erectile dysfunction attributed to complications of diabetes mellitus (n=268).
- The cost of sildenafil 50 mg in India varies depending on the brand.
- Genuine sildenafil is manufactured by reputable companies like Pfizer.
- It's important to buy from authorized pharmacies to avoid counterfeit products.
- Sildenafil 50 mg is often combined with other medications for enhanced effect.
- Overuse or misuse can lead to serious health issues like low blood pressure.
- The medication is not suitable for individuals on nitrate medications.
- Sildenafil 50 mg can interact with alcohol, reducing its effectiveness.
- People with heart problems should consult a doctor before use.
- Keeping the medication away from children is essential to prevent accidental ingestion.
As in the other titration studies, patients were started on 50 mg and allowed to adjust the dose up to 100 mg or down to 25 mg of sildenafil tablets; all patients, however, were receiving 50 mg or 100 mg at the end of the study. There were highly statistically significant improvements on the two principal IIEF questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) on sildenafil compared to placebo. On a global improvement question, 57% of sildenafil patients reported improved erections versus 10% on placebo. Diary data indicated that on sildenafil, 48% of intercourse attempts were successful versus 12% on placebo.One randomized, double-blind, placebo-controlled, crossover, flexible-dose (up to 100 mg) study of patients with erectile dysfunction resulting from spinal cord injury (n=178) was conducted. The changes from baseline in scoring on the two end point questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) were highly statistically significantly in favor of sildenafil. On a global improvement question, 83% of patients reported improved erections on sildenafil versus 12% on placebo. Diary data indicated that on sildenafil, 59% of attempts at sexual intercourse were successful compared to 13% on placebo.Across all trials, sildenafil improved the erections of 43% of radical prostatectomy patients compared to 15% on placebo.Subgroup analyses of responses to a global improvement question in patients with psychogenic etiology in two fixed-dose studies (total n=179) and two titration studies (total n=149) showed 84% of sildenafil patients reported improvement in erections compared with 26% of placebo. Diary data in two of the studies (n=178) showed rates of successful intercourse per attempt of 70% for sildenafil and 29% for placebo.Efficacy Results in Subpopulations in Controlled Clinical StudiesA review of population subgroups demonstrated efficacy regardless of baseline severity, etiology, race and age.Sildenafil was effective in a broad range of ED patients, including those with a history of coronary artery disease, hypertension, other cardiac disease, peripheral vascular disease, diabetes mellitus, depression, coronary artery bypass graft (CABG), radical prostatectomy, transurethral resection of the prostate (TURP) and spinal cord injury, and in patients taking antidepressants/antipsychotics and anti-hypertensives/diuretics. In clinical studies, sildenafil was assessed for its effect on the ability of men with erectile dysfunction (ED) to engage in sexual activity and in many cases specifically on the ability to achieve and maintain an erection sufficient for satisfactory sexual activity. The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo.
- Legally, sildenafil is classified as a prescription drug in many parts of India.
- Online purchasing should be from licensed pharmacies to avoid scams.
- Always read the patient information leaflet before use.
- Sildenafil 50 mg offers a quick and effective solution for ED.
- The medication has been shown to improve sexual satisfaction for many men.
- Use in combination with counseling can improve overall outcomes.
- Avoid operating machinery or driving after taking sildenafil until effects are known.
- Report any adverse reactions to a healthcare provider promptly.
- Keep track of dosage and response to determine the ideal use pattern.
Effect of Sildenafil tablets and Placebo on Maintenance of Erection by Baseline Score. Percentage of Patients Reporting an Improvement in Erections. Across all trials, sildenafil improved the erections of 43% of radical prostatectomy patients compared to 15% on placebo.
More about sildenafil
Sildenafil was evaluated primarily at doses of 25 mg, 50 mg and 100 mg in 21 randomized, double-blind, placebo-controlled trials of up to 6 months in duration, using a variety of study designs (fixed dose, titration, parallel, crossover). Sildenafil was administered to more than 3,000 patients aged 19 to 87 years, with ED of various etiologies (organic, psychogenic, mixed) with a mean duration of 5 years. Sildenafil demonstrated statistically significant improvement compared to placebo in all 21 studies. The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo.Efficacy Endpoints in Controlled Clinical StudiesThe effectiveness of sildenafil was evaluated in most studies using several assessment instruments. The primary measure in the principal studies was a sexual function questionnaire (the International Index of Erectile Function - IIEF) administered during a 4-week treatment-free run-in period, at baseline, at follow-up visits, and at the end of double-blind, placebo-controlled, at-home treatment.
What is Sildenafil Citrate used for?
Two of the questions from the IIEF served as primary study endpoints; categorical responses were elicited to questions about (1) the ability to achieve erections sufficient for sexual intercourse and (2) the maintenance of erections after penetration. The patient addressed both questions at the final visit for the last 4 weeks of the study. The possible categorical responses to these questions were (0) no attempted intercourse, (1) never or almost never, (2) a few times, (3) sometimes, (4) most times, and (5) almost always or always. Also collected as part of the IIEF was information about other aspects of sexual function, including information on erectile function, orgasm, desire, satisfaction with intercourse, and overall sexual satisfaction. Sexual function data were also recorded by patients in a daily diary.
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In addition, patients were asked a global efficacy question and an optional partner questionnaire was administered.Efficacy Results from Controlled Clinical StudiesThe effect on one of the major end points, maintenance of erections after penetration, is shown in Figure 6, for the pooled results of 5 fixed-dose, dose-response studies of greater than one month duration, showing response according to baseline function. Results with all doses have been pooled, but scores showed greater improvement at the 50 and 100 mg doses than at 25 mg. The pattern of responses was similar for the other principal question, the ability to achieve an erection sufficient for intercourse. The titration studies, in which most patients received 100 mg, showed similar results. Figure 6 shows that regardless of the baseline levels of function, subsequent function in patients treated with sildenafil was better than that seen in patients treated with placebo. 16 HOW SUPPLIED/STORAGE AND HANDLING Sildenafil tablets, USP is supplied as white to off-white, film-coated, diamond-shaped tablets containing sildenafil citrate, USP equivalent to the nominally indicated amount of sildenafil and are debossed with ‘CL35’, ‘CL36’ and ‘CL37’ on one side for 25 mg, 50 mg and 100 mg respectively and plain on the other side.Recommended Storage: Store at 20° to 25°C (68° to 77° F); excursions permitted to 15° to 30° C (59° to 86° F) [see USP Controlled Room Temperature]. Sildenafil tablets, USP is supplied as white to off-white, film-coated, diamond-shaped tablets containing sildenafil citrate, USP equivalent to the nominally indicated amount of sildenafil and are debossed with ‘CL35’, ‘CL36’ and ‘CL37’ on one side for 25 mg, 50 mg and 100 mg respectively and plain on the other side.
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The changes from baseline in scoring on the two end point questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) were highly statistically significantly in favor of sildenafil. On a global improvement question, 83% of patients reported improved erections on sildenafil versus 12% on placebo. Diary data indicated that on sildenafil, 59% of attempts at sexual intercourse were successful compared to 13% on placebo.Across all trials, sildenafil improved the erections of 43% of radical prostatectomy patients compared to 15% on placebo.Subgroup analyses of responses to a global improvement question in patients with psychogenic etiology in two fixed-dose studies (total n=179) and two titration studies (total n=149) showed 84% of sildenafil patients reported improvement in erections compared with 26% of placebo. Diary data in two of the studies (n=178) showed rates of successful intercourse per attempt of 70% for sildenafil and 29% for placebo.Efficacy Results in Subpopulations in Controlled Clinical StudiesA review of population subgroups demonstrated efficacy regardless of baseline severity, etiology, race and age.Sildenafil was effective in a broad range of ED patients, including those with a history of coronary artery disease, hypertension, other cardiac disease, peripheral vascular disease, diabetes mellitus, depression, coronary artery bypass graft (CABG), radical prostatectomy, transurethral resection of the prostate (TURP) and spinal cord injury, and in patients taking antidepressants/antipsychotics and anti-hypertensives/diuretics. In clinical studies, sildenafil was assessed for its effect on the ability of men with erectile dysfunction (ED) to engage in sexual activity and in many cases specifically on the ability to achieve and maintain an erection sufficient for satisfactory sexual activity.
Does sildenafil interact with foods or drinks?
The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo. Effect of Sildenafil tablets and Placebo on Maintenance of Erection by Baseline Score. Percentage of Patients Reporting an Improvement in Erections. Across all trials, sildenafil improved the erections of 43% of radical prostatectomy patients compared to 15% on placebo. 16 HOW SUPPLIED/STORAGE AND HANDLING Sildenafil tablets, USP is supplied as white to off-white, film-coated, diamond-shaped tablets containing sildenafil citrate, USP equivalent to the nominally indicated amount of sildenafil and are debossed with ‘CL35’, ‘CL36’ and ‘CL37’ on one side for 25 mg, 50 mg and 100 mg respectively and plain on the other side.Recommended Storage: Store at 20° to 25°C (68° to 77° F); excursions permitted to 15° to 30° C (59° to 86° F) [see USP Controlled Room Temperature].
GENERIC NAME OF THE MEDICINAL PRODUCT:
Sildenafil tablets, USP is supplied as white to off-white, film-coated, diamond-shaped tablets containing sildenafil citrate, USP equivalent to the nominally indicated amount of sildenafil and are debossed with ‘CL35’, ‘CL36’ and ‘CL37’ on one side for 25 mg, 50 mg and 100 mg respectively and plain on the other side. Recommended Storage: Store at 20° to 25°C (68° to 77° F); excursions permitted to 15° to 30° C (59° to 86° F) [see USP Controlled Room Temperature]. 17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Patient Information)NitratesPhysicians should discuss with patients the contraindication of sildenafil tablets with regular and/or intermittent use of nitric oxide donors, such as organic nitrates or organic nitrites in any form [see Contraindications (4.1)].Guanylate Cyclase (GC) StimulatorsPhysicians should discuss with patients the contraindication of sildenafil tablets with use of guanylate cyclase stimulators such as riociguat [see Contraindications (4.3)].Concomitant Use with Drugs Which Lower Blood PressurePhysicians should advise patients of the potential for sildenafil tablets to augment the blood pressure lowering effect of alpha-blockers and anti-hypertensive medications. Recommended Storage: Store at 20° to 25°C (68° to 77° F); excursions permitted to 15° to 30° C (59° to 86° F) [see USP Controlled Room Temperature]. 17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Patient Information)NitratesPhysicians should discuss with patients the contraindication of sildenafil tablets with regular and/or intermittent use of nitric oxide donors, such as organic nitrates or organic nitrites in any form [see Contraindications (4.1)].Guanylate Cyclase (GC) StimulatorsPhysicians should discuss with patients the contraindication of sildenafil tablets with use of guanylate cyclase stimulators such as riociguat [see Contraindications (4.3)].Concomitant Use with Drugs Which Lower Blood PressurePhysicians should advise patients of the potential for sildenafil tablets to augment the blood pressure lowering effect of alpha-blockers and anti-hypertensive medications.
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