Sildenafil Citrate is primarily used to treat two main conditions: Pulmonary Arterial Hypertension (PAH): This is a serious condition where there is high blood pressure in the arteries that supply the lungs. Sildenafil helps to improve exercise capacity and slow down the worsening of this condition[1]. Erectile Dysfunction (ED): While not the focus of most clinical trials presented, Sildenafil is well-known for its use in treating erectile dysfunction in men[4].
| Patient Group | Starting Dose | Maximum Dose | Frequency | Notes |
|---|---|---|---|---|
| Adult Men with ED | 50 mg | 100 mg | Once per day, 1 hour before sex | Adjust based on efficacy and side effects |
| Patients with Liver Impairment | 25 mg | 50 mg | Once daily | Lower doses recommended |
| Elderly Patients | 25-50 mg | 100 mg | As needed | Monitor for side effects |
This action leads to the relaxation of blood vessels, which improves blood flow in specific areas of the body. In the case of PAH, it helps to reduce blood pressure in the lungs, while for ED, it increases blood flow to the penis[3].
Brand names
Clinical trials have shown that Sildenafil is effective in treating PAH. It can improve exercise capacity, as measured by the 6-minute sildenafil 50 mg india walk distance test (6MWD). This test measures how far a patient can walk in 6 minutes, which is an important indicator of the severity of PAH[5]. For erectile dysfunction, Sildenafil has been shown to significantly improve erectile function and is often used as part of penile rehabilitation programs after prostate surgery[4]. Like all medications, Sildenafil can cause side effects.
What should I do if I accidentally use too much sildenafil?
More serious side effects are rare but can occur. These may include changes in vision or hearing, or prolonged erections in men. It’s important to discuss any side effects with your healthcare provider[2]. Research on Sildenafil continues to explore its potential benefits in various medical conditions. Combination therapy with other medications for PAH[3]. Sildenafil Citrate comes in various forms and dosages: Tablets: Available in different strengths, commonly 20 mg for PAH and 50 mg or 100 mg for ED[5]. Oral Suspension: A liquid form of the medication, typically at a concentration of 10 mg/mL[6]. Orally Disintegrating Film (ODF): A newer form that dissolves in the mouth[2]. The dosage and frequency of administration depend on the condition being treated and the individual patient’s needs.
- Contraindications include use with nitrates and recent heart attack.
- Patients with contraindications should avoid sildenafil entirely.
- Visual disturbances including blue-tinted vision may occur.
- Use caution in patients with liver or kidney impairment.
- Sildenafil can interact with certain antibiotics and antifungals.
- Always inform your doctor about other medications you're taking.
- It does not protect against sexually transmitted infections.
For PAH, a common dosage is 20 mg three times a day[1].
- Sildenafil is not recommended for children or minors.
- Elderly patients may need lower doses due to sensitivity.
- Use with caution if you have a history of stroke or unstable angina.
- Combining sildenafil with other ED drugs increases side effects risks.
- Be aware of counterfeit or substandard sildenafil products.
- Always purchase medication from reputable pharmacies.
- Consult a healthcare professional prior to initiating therapy.
Clinical trials have shown that Sildenafil is effective in treating PAH.
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| Kamagra Soft Tabs | 100mg | 32 Pills | 120.11€ 114.39€ | |
| Kamagra | 100mg | 32 Pills | 121.24€ 115.47€ | |
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| Kamagra Polo | 100mg | 12 Pills | 60.21€ 57.34€ | |
| Kamagra | 100mg | 12 Pills | 55.64€ 52.99€ | |
| Viagra Generic | 25mg | 90 + 6 Pills | 105.03€ 100.03€ | |
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It can improve exercise capacity, as measured by the 6-minute sildenafil 50 mg india walk distance test (6MWD). This test measures how far a patient can walk in 6 minutes, which is an important indicator of the severity of PAH[5]. For erectile dysfunction, Sildenafil has been shown to significantly improve erectile function and is often used as part of penile rehabilitation programs after prostate surgery[4]. Like all medications, Sildenafil can cause side effects. More serious side effects are rare but can occur. These may include changes in vision or hearing, or prolonged erections in men.
- Some users report headaches and dizziness after taking sildenafil.
- A common side effect is facial flushing and nasal congestion.
- Rare side effects include sudden hearing loss or vision loss.
- Priapism requires urgent medical attention to prevent tissue damage.
- Sudden vision loss should be immediately evaluated by a doctor.
- Allergic reactions such as rash, hives, or swelling are possible.
- Discontinue use and seek medical help if serious side effects occur.
It’s important to discuss any side effects with your healthcare provider[2]. Research on Sildenafil continues to explore its potential benefits in various medical conditions. Combination therapy with other medications for PAH[3].
StatPearls [Internet].
Long-term effects and safety in PAH treatment[1]. Use in penile rehabilitation after prostate surgery[4]. Development of new formulations, such as orally disintegrating films, for easier administration[2]. These ongoing studies aim to further improve the effectiveness and safety of Sildenafil, potentially expanding its use in treating various medical conditions. [1][2][4][5][7][8][10][24][27][33][41][56][57][67][91][131] Brand Name: Vybrique, ViagraClasses: Phosphodiesterase Type 5 Inhibitors (24:08.12), Phosphodiesterase type 5 inhibitors (48:48.24) Sildenafil citrate (Viagra® and generic equivalents) is used orally for the treatment of erectile dysfunction (ED, impotence).
Dosage for ED
[1][4][6][7][8][9][10][25][33][34][67][81][102][104][105][107][108][112][118][126][127][128][129][130][131][132][133][134][140][142][143][144][189] A thorough medical, sexual and psychosocial history, physical examination, and selective laboratory testing should be undertaken to diagnose ED, determine potential underlying causes, exclude potentially reversible or treatable causes (e.g., hypogonadism with inadequate testosterone replacement, hyperprolactinemia, drug-induced dysfunction, dyslipidemias, alcoholism, other substance abuse, hypertension, thyroid disease, cardiovascular or cerebrovascular disease, neurologic disease, adrenal dysfunction, psychologic dysfunction, marital discord, smoking), and identify appropriate treatment in conjunction with or prior to initiating vasoactive therapy (e.g., PDE 5 type inhibitor). [12][28][30][31][57][65][66][70][78][83][94][144][145][160][161][189][601][602][603] A review of the patient's current drug regimens should be conducted to detect possible drug-induced ED (e.g., certain antihypertensive, antidepressant, antipsychotic, or antiarrhythmic agents); it may be possible to substitute alternative drug(s) that lessen the risk of such dysfunction. [12][28][70][81][118][144][161][602][603] In instances where substitution therapy is not feasible, concomitant vasoactive therapy with a PDE 5 type inhibitor may promote patient compliance by counteracting ED as an adverse effect. [12][28][70][81][118][144][161][602][603] Efficacy of sildenafil is variable in patients with ED, in part depending on the underlying etiology, severity, and dose employed, but the drug generally appears to be effective in restoring sexual function to an acceptable level in the majority of treated men. [1][7][8][9][10][25][33][34][65][76][81][101][104][105][126][127][131][142][143][144] The erectile response generally increases with increasing sildenafil dose and plasma drug concentration, with response becoming greater at 50- and 100-mg doses than at 25 mg.[1][8][9][33][126][130][131][155] Analyses of subgroups of patients with ED indicate that efficacy of sildenafil is not affected by race or age, duration of ED, or duration of select underlying disease states (e.g., diabetes mellitus), and the drug has been effective in a broad range of patients with ED, including those with a history of coronary artery disease (e.g., coronary artery bypass graft [CABG]), hypertension, other cardiac disease (including ischemic heart disease), peripheral vascular disease, type 1 or 2 diabetes mellitus, depression, radical prostatectomy, prostate brachytherapy, transurethral resection of the prostate (TURP), spina bifida, spinal cord injury, and in patients taking antidepressants, antipsychotics, diuretics, and antihypertensive agents. Long-term effects and safety in PAH treatment[1]. Use in penile rehabilitation after prostate surgery[4].
What is sildenafil?
Development of new formulations, such as orally disintegrating films, for easier administration[2]. These ongoing studies aim to further improve the effectiveness and safety of Sildenafil, potentially expanding its use in treating various medical conditions.
| Contraindication | Explanation | Severity Level | Notes |
|---|---|---|---|
| Nitrates use | Can cause severe hypotension | Critical | Avoid concomitant use |
| Heart conditions | Risk of cardiovascular events | Moderate | Consult healthcare provider |
| Hypotension | Low blood pressure | Moderate | Use with caution |
| Retinal Disorders | Potential for vision impairment | Mild | Seek medical advice |
[1][2][4][5][7][8][10][24][27][33][41][56][57][67][91][131] Brand Name: Vybrique, ViagraClasses: Phosphodiesterase Type 5 Inhibitors (24:08.12), Phosphodiesterase type 5 inhibitors (48:48.24) Sildenafil citrate (Viagra® and generic equivalents) is used orally for the treatment of erectile dysfunction (ED, impotence).
What special dietary instructions should I follow?
[33][107][130][131] Improvement in erectile function sufficient for successful intercourse can be achieved with sildenafil in a substantial percentage of patients with ED, and the strength and duration of erection achieved with the drug in such patients approached those achieved in untreated healthy men. Sildenafil also has been effective in a limited number of men with temporary ED associated with the stress of providing a sperm sample (e.g., for intrauterine insemination or in vitro fertilization during assisted reproduction). [143] In men with a history of such temporary dysfunction, planned use of sildenafil for subsequent attempts at obtaining a sperm specimen may improve attainment of an erection adequate for self-stimulated ejaculation. While most males with ED respond to oral sildenafil therapy, treatment failures do occur; pooled data from various placebo-controlled, dose-response, or open-label studies (25-100 mg for 6-12 months) indicate that up to 5% of patients discontinued therapy because of lack of effectiveness. [1][7][33][69][93][104][107][128][131][132][163][165] Information on the long-term effects of sildenafil is limited, and thus the optimum duration of therapy is not known.
What should I do if I miss a dose of sildenafil?
[1][4][6][7][8][9][10][25][33][34][67][81][102][104][105][107][108][112][118][126][127][128][129][130][131][132][133][134][140][142][143][144][189] A thorough medical, sexual and psychosocial history, physical examination, and selective laboratory testing should be undertaken to diagnose ED, determine potential underlying causes, exclude potentially reversible or treatable causes (e.g., hypogonadism with inadequate testosterone replacement, hyperprolactinemia, drug-induced dysfunction, dyslipidemias, alcoholism, other substance abuse, hypertension, thyroid disease, cardiovascular or cerebrovascular disease, neurologic disease, adrenal dysfunction, psychologic dysfunction, marital discord, smoking), and identify appropriate treatment in conjunction with or prior to initiating vasoactive therapy (e.g., PDE 5 type inhibitor). [12][28][30][31][57][65][66][70][78][83][94][144][145][160][161][189][601][602][603] A review of the patient's current drug regimens should be conducted to detect possible drug-induced ED (e.g., certain antihypertensive, antidepressant, antipsychotic, or antiarrhythmic agents); it may be possible to substitute alternative drug(s) that lessen the risk of such dysfunction.
Drug Interactions
[1][25][30][33][34][93][101][102][104][105][107][108][112][118][126][127][128][129][130][131][132][133][134][140][144] Pooled data from numerous fixed-dose and flexible-dose studies in men with ED secondary to a broad spectrum of organic and psychogenic causes showed increases in mean rates of successful intercourse (total successes divided by total attempts) to about 66-69% in those receiving sildenafil compared with about 20-22% for placebo. Erectile response to sildenafil is better in patients whose erectile function is less impaired at treatment initiation (e.g., those sildenafil pricing with some spontaneous successful intercourse, with partial erections, with erections during sleep, or with psychogenic causes). [1][33][105][145] In one flexible-dose study (dosage titration and maintenance up to 100 mg), mean scores for number of successful penetrations returned to normal in a subgroup of patients with psychogenic causes of ED; however, mean scores for maintenance of erections during intercourse in these men were lower than in untreated healthy men. [33][34] In a study in men with ED secondary to radical prostatectomy receiving fixed-dose sildenafil (100 mg), response to therapy was greatest in those who had undergone bilateral-nerve-sparing surgery than in those who had undergone unilateral or non-nerve-sparing procedures. [104][127] Pooled data from various clinical trials indicate that sildenafil improved the erections of 43% of patients with ED secondary to radical prostatectomy compared with 15% of those receiving placebo.
Dosage for pulmonary arterial hypertension (PAH)
[1][104] A pooled analysis of 10 placebo-controlled studies of men with severe ED (organic etiology in 60%, psychogenic in 15%, and mixed in 25% of patients) treated with sildenafil (50-100 mg in fixed- or flexible-dose studies) indicated that 48% of the patients usually had erections sufficient for intercourse (score of 4, with 0 being unsuccessful and 5 being almost always successful) after treatment with sildenafil, compared with 8% of those receiving placebo. [76][127] In several randomized, double-blind, placebo-controlled studies in patients receiving sildenafil (flexible doses up to 100 mg or fixed doses ranging from 10-100 mg for 12 weeks) for the treatment of ED attributed to complications of diabetes mellitus, complications of spinal cord injury, or psychogenic causes, 48, 59, or 70% of all attempts at intercourse were successful, respectively, compared with 12, 13, or 29% of all attempts in those receiving placebo. [1][7][8][9][10][25][33][93] In these studies, sildenafil improved several aspects of sexual function including frequency, firmness, and maintenance of erection; frequency of orgasm; satisfaction and enjoyment of intercourse; and overall relationship satisfaction. [1][8][9][33][94][107][130][131][142] Pooled data from fixed- and flexible-dose studies indicate that sildenafil (50 or 100 mg) has no effect on sexual desire (i.e., rates of attempted intercourse, which averaged about 2 per week), but the rate of success increased to an average of 1.3 events per patient per week from 0.4 events per week with placebo. [1][8][33][131] In part, the absence of an effect on sexual desire may be attributed to the fact that men enrolling in ED studies generally have a near-normal level of sexual desire upon study entry. [12][28][70][81][118][144][161][602][603] In instances where substitution therapy is not feasible, concomitant vasoactive therapy with a PDE 5 type inhibitor may promote patient compliance by counteracting ED as an adverse effect. [12][28][70][81][118][144][161][602][603] Efficacy of sildenafil is variable in patients with ED, in part depending on the underlying etiology, severity, and dose employed, but the drug generally appears to be effective in restoring sexual function to an acceptable level in the majority of treated men. [1][7][8][9][10][25][33][34][65][76][81][101][104][105][126][127][131][142][143][144] The erectile response generally increases with increasing sildenafil dose and plasma drug concentration, with response becoming greater at 50- and 100-mg doses than at 25 mg.[1][8][9][33][126][130][131][155] Analyses of subgroups of patients with ED indicate that efficacy of sildenafil is not affected by race or age, duration of ED, or duration of select underlying disease states (e.g., diabetes mellitus), and the drug has been effective in a broad range of patients with ED, including those with a history of coronary artery disease (e.g., coronary artery bypass graft [CABG]), hypertension, other cardiac disease (including ischemic heart disease), peripheral vascular disease, type 1 or 2 diabetes mellitus, depression, radical prostatectomy, prostate brachytherapy, transurethral resection of the prostate (TURP), spina bifida, spinal cord injury, and in patients taking antidepressants, antipsychotics, diuretics, and antihypertensive agents. [1][25][30][33][34][93][101][102][104][105][107][108][112][118][126][127][128][129][130][131][132][133][134][140][144] Pooled data from numerous fixed-dose and flexible-dose studies in men with ED secondary to a broad spectrum of organic and psychogenic causes showed increases in mean rates of successful intercourse (total successes divided by total attempts) to about 66-69% in those receiving sildenafil compared with about 20-22% for placebo. Erectile response to sildenafil is better in patients whose erectile function is less impaired at treatment initiation (e.g., those sildenafil pricing with some spontaneous successful intercourse, with partial erections, with erections during sleep, or with psychogenic causes). [1][33][105][145] In one flexible-dose study (dosage titration and maintenance up to 100 mg), mean scores for number of successful penetrations returned to normal in a subgroup of patients with psychogenic causes of ED; however, mean scores for maintenance of erections during intercourse in these men were lower than in untreated healthy men. [33][34] In a study in men with ED secondary to radical prostatectomy receiving fixed-dose sildenafil (100 mg), response to therapy was greatest in those who had undergone bilateral-nerve-sparing surgery than in those who had undergone unilateral or non-nerve-sparing procedures. [104][127] Pooled data from various clinical trials indicate that sildenafil improved the erections of 43% of patients with ED secondary to radical prostatectomy compared with 15% of those receiving placebo.
How should this medicine be used?
Sildenafil Citrate is primarily used to treat two main conditions: Pulmonary Arterial Hypertension (PAH): This is a serious condition where there is high blood pressure in the arteries that supply the lungs. Sildenafil helps to improve exercise capacity and slow down the worsening of this condition[1]. Erectile Dysfunction (ED): While not the focus of most clinical trials presented, Sildenafil is well-known for its use in treating erectile dysfunction in men[4]. This action leads to the relaxation of blood vessels, which improves blood flow in specific areas of the body. In the case of PAH, it helps to reduce blood pressure in the lungs, while for ED, it increases blood flow to the penis[3].
Is Viagra safe to use?
Sildenafil Citrate comes in various forms and dosages: Tablets: Available in different strengths, commonly 20 mg for PAH and 50 mg or 100 mg for ED[5]. Oral Suspension: A liquid form of the medication, typically at a concentration of 10 mg/mL[6]. Orally Disintegrating Film (ODF): A newer form that dissolves in the mouth[2]. The dosage and frequency of administration depend on the condition being treated and the individual patient’s needs. For PAH, a common dosage is 20 mg three times a day[1]. [1][104] A pooled analysis of 10 placebo-controlled studies of men with severe ED (organic etiology in 60%, psychogenic in 15%, and mixed in 25% of patients) treated with sildenafil (50-100 mg in fixed- or flexible-dose studies) indicated that 48% of the patients usually had erections sufficient for intercourse (score of 4, with 0 being unsuccessful and 5 being almost always successful) after treatment with sildenafil, compared with 8% of those receiving placebo. [76][127] In several randomized, double-blind, placebo-controlled studies in patients receiving sildenafil (flexible doses up to 100 mg or fixed doses ranging from 10-100 mg for 12 weeks) for the treatment of ED attributed to complications of diabetes mellitus, complications of spinal cord injury, or psychogenic causes, 48, 59, or 70% of all attempts at intercourse were successful, respectively, compared with 12, 13, or 29% of all attempts in those receiving placebo. [1][7][8][9][10][25][33][93] In these studies, sildenafil improved several aspects of sexual function including frequency, firmness, and maintenance of erection; frequency of orgasm; satisfaction and enjoyment of intercourse; and overall relationship satisfaction. [1][8][9][33][94][107][130][131][142] Pooled data from fixed- and flexible-dose studies indicate that sildenafil (50 or 100 mg) has no effect on sexual desire (i.e., rates of attempted intercourse, which averaged about 2 per week), but the rate of success increased to an average of 1.3 events per patient per week from 0.4 events per week with placebo. [1][8][33][131] In part, the absence of an effect on sexual desire may be attributed to the fact that men enrolling in ED studies generally have a near-normal level of sexual desire upon study entry.
Continuing Education Activity
[33][107][130][131] Improvement in erectile function sufficient for successful intercourse can be achieved with sildenafil in a substantial percentage of patients with ED, and the strength and duration of erection achieved with the drug in such patients approached those achieved in untreated healthy men. Sildenafil also has been effective in a limited number of men with temporary ED associated with the stress of providing a sperm sample (e.g., for intrauterine insemination or in vitro fertilization during assisted reproduction). [143] In men with a history of such temporary dysfunction, planned use of sildenafil for subsequent attempts at obtaining a sperm specimen may improve attainment of an erection adequate for self-stimulated ejaculation. While most males with ED respond to oral sildenafil therapy, treatment failures do occur; pooled data from various placebo-controlled, dose-response, or open-label studies (25-100 mg for 6-12 months) indicate that up to 5% of patients discontinued therapy because of lack of effectiveness. [1][7][33][69][93][104][107][128][131][132][163][165] Information on the long-term effects of sildenafil is limited, and thus the optimum duration of therapy is not known.