6 ADVERSE REACTIONS
They are available as follows: Bottles of 30 tablets NDC 31722-965-30 Sildenafil Tablets USP, 50 mg are white colored, round-shaped, biconvex, film coated tablets debossed with 'E' on one side and '114 'on the other side.
- Sildenafil 200 mg should not be used with recreational drugs like ecstasy.
- Always consult a doctor if you notice vision changes or hearing loss.
- The medication may cause flushing, indigestion, or nasal stuffiness.
- It is crucial to stay hydrated when using sildenafil.
- Women using sildenafil should seek medical advice before use.
- Proper lifestyle changes can enhance erectile function alongside medication.
They are available as follows: Bottles of 30 tablets NDC 31722-966-30 Bottles of 100 tablets NDC 31722-966-01 Sildenafil Tablets USP, 100
About the Company
Across all trials, sildenafil tablets 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 tablets 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 tablets and 29% for placebo. Efficacy Results in Subpopulations in Controlled Clinical Studies A review of population subgroups demonstrated efficacy regardless of baseline severity, etiology, race and age. sildenafil tablets 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 sildenafil 50 mg india 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. mg are white colored, round-shaped, biconvex, film coated tablets debossed with 'E' on one side and '115' on the other side.
- Sildenafil 200 mg is not suitable for everyone; consult a doctor beforehand.
- Overdose can lead to serious risks like vision loss or prolonged erections.
- The medication should be stored in a cool, dry place away from children.
- It can interact with other medications, including blood thinners and antihypertensives.
- Sildenafil enhances the effects of nitric oxide, relaxing blood vessels.
- Patients should avoid heavy meals before taking sildenafil 200 mg.
They are available as follows: Bottles of 30 tablets NDC 31722-967-30 Bottles of 100 tablets NDC 31722-967-01 Recommended Storage:Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature].
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Advise the patient to read the FDA-approved patient labeling (Patient Information) Nitrates Physicians 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)].
8.2 Lactation
In vivo studies: No significant interactions were shown with tolbutamide (250 mg) or warfarin (40 mg), both of which are metabolized by CYP2C9. In a study of healthy male volunteers, sildenafil (100 mg) did not affect the steady state pharmacokinetics of the HIV protease inhibitors, saquinavir and ritonavir, both of which are CYP3A4 substrates. Sildenafil tablets (50 mg) did not potentiate the increase in bleeding time caused by aspirin (150 mg). Sildenafil at steady state, at a dose not approved for the treatment of erectile dysfunction (80 mg t.i.d.) resulted in a 50% increase in AUC and a 42% increase in C maxof bosentan (125 mg b.i.d.). Carcinogenesis Sildenafil was not carcinogenic when administered to rats for 24 months at a dose resulting in total systemic drug exposure (AUCs) for unbound sildenafil and its major metabolite of 20-and 38-times, for male and female rats, respectively, the exposures observed in human males given the Maximum Recommended Human Dose (MRHD) of 100 mg.
What should I tell my healthcare provider before taking sildenafil?
Sildenafil was not carcinogenic when administered to mice for 18 to 21 months at dosages up to the Maximum Tolerated Dose (MTD) of 10 mg/kg/day, approximately 0.4 times the MRHD on a mg/m2 basis in a 50 kg subject. Impairment of Fertility There was no impairment of fertility in rats given sildenafil up to 60 mg/kg/day for 36 days to females and 102 days to males, a dose producing an AUC value of more than 25 times the human male AUC. In clinical studies, sildenafil tablets 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. Sildenafil tablets were 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 tablets were 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.
Adjusting Your Sildenafil Dosage Over Time
Sildenafil tablets demonstrated statistically significant improvement compared to placebo in all 21 studies. Efficacy Endpoints in Controlled Clinical Studies The effectiveness of sildenafil tablets were 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. In addition, patients were asked a global efficacy question and an optional partner questionnaire was administered. Efficacy Results from Controlled Clinical Studies The 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. Guanylate Cyclase (GC) Stimulators Physicians should discuss with patients the contraindication of sildenafil tablets with use of guanylate cyclase stimulators such as riociguat [see Contraindications (4.3)].
5.2 Prolonged Erection and Priapism
Figure 6 shows that regardless of the baseline levels of function, subsequent function in patients treated with sildenafil tablets were 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. 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 sildenafil 20 mg tablets fixed dose studies (1797 patients) of 12 to 24 weeks duration is shown in Figure 7. 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.
Are these medications safe for everyone?
In the titration studies (n=644) (with most patients eventually receiving 100 mg), results were similar. Overall treatment p<0.0001 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 sildenafil pick up during a 4-week, treatment-free run-in period.
Warnings and Precautions
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 tablets 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 to 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 tablets 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 tablets 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. Concomitant Use with Drugs Which Lower Blood Pressure Physicians should advise patients of the potential for sildenafil tablets to augment the blood pressure lowering effect of alpha-blockers and anti-hypertensive medications.
| Use Case | Patient Group | Effect Duration | Common Side Effects |
|---|---|---|---|
| Erectile Dysfunction | Men aged 40-70 | 4-6 hours | Headache, flushing, nasal congestion |
| Pulmonary Hypertension | Adults with PAH | 4-6 hours | Dizziness, visual disturbances |
| Off-label Sexual Enhancement | Men over 40 | Varies | Muscle aches, digestive upset |
| Sildenafil for High Altitude Sickness | Travelers | 4-6 hours | Low blood pressure, dizziness |
Concomitant administration of sildenafil tablets and an alpha-blocker may lead to symptomatic hypotension in some patients.
- Sildenafil 200 mg is usually prescribed when lower doses do not work.
- The medication is effective only with sexual arousal.
- Use with caution if you have a history of priapism.
- Report any allergies or adverse reactions to your healthcare provider.
- Combining sildenafil with certain antibiotics may increase side effects.
- Regular use may require dose adjustments under medical supervision.
Therefore, when sildenafil tablets are co-administered with alpha-blockers, patients should be stable on alpha-blocker therapy prior to initiating
| Interacting Drug/Class | Effect on Sildenafil | Clinical Significance | Recommendations |
|---|---|---|---|
| Nitrates | Potentiates vasodilation | Risk of severe hypotension | Avoid concomitant use |
| CYP3A4 inhibitors (e.g., Ritonavir) | Increase sildenafil plasma levels | Risk of increased side effects | Reduce dose or avoid |
| Alpha-blockers | Additive blood pressure lowering | Hypotension | Use with caution, monitor BP |
| CYP3A4 inducers (e.g., Rifampin) | Decrease sildenafil effectiveness | May reduce efficacy | Adjust dose accordingly |
sildenafil tablets treatment and sildenafil tablets should be initiated at the lowest dose [see Warnings and Precautions (5.5)].
Dosage And Administration
Sildenafil tablets 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 tablets compared to placebo. On a global improvement question, 57% of sildenafil tablets patients reported improved erections versus 10% on placebo.
What are the common side effects of PDE5 inhibitors?
Diary data indicated that on sildenafil tablets, 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 tablets. On a global improvement question, 83% of patients reported improved erections on sildenafil tablets versus 12% on placebo. Diary data indicated that on sildenafil tablets, 59% of attempts at sexual intercourse were successful compared to 13% on placebo.
