Important Safety Information and Warnings

The typical starting dose of Viagra is 50 mg. But your doctor might prescribe a lower starting dosage of 25 mg, depending on several factors. Be sure to follow your doctor’s dosing instructions. For example, if you have liver or kidney problems, or if you’re taking certain other medications, your doctor might recommend starting with a 25 mg dosage. A 25-mg starting dosage may also be recommended if you’re 65 years or older. See “Dosage adjustments” just above for details about when a lower dose might be prescribed. No, the dosage of Viagra isn’t based on a person’s weight.

Related/similar drugs

The maximum recommended dosage of Viagra is 100 mg sildenafil generic per day. Taking higher doses of Viagra can increase your chances of having severe side effects, such as: dangerously low blood pressure, which may increase your risk for heart attack or stroke priapism, a painful erection that lasts longer than 4 hours and could lead to permanent damage to your penis if untreated The dosage of Viagra you’re prescribed may depend on several factors. the severity of your erectile dysfunction (ED) how well Viagra works for your ED other medications you take (see “Dosage adjustments” under “What is Viagra’s dosage?”) other conditions you have (see “Dosage adjustments” under “What is Viagra’s dosage?”) Optum Perks is owned by RVO Health. You’ll take Viagra by mouth about 1 hour before sexual activity. You can take Viagra with or without food.

Mild side effects

But the drug may not work as quickly if you take it with foods containing a lot of fat, such as fried foods. In this case, Viagra could take up to an hour longer to start working. Viagra is a medication that you’ll only take when you need it, about 1 hour before sexual activity. You don’t have to take it regularly for it to be effective. If you forget to take Viagra an hour before sex, you can take it as soon as you remember. Instead, Viagra’s dosage is based on your age, how well your kidneys and liver are working, and how well the drug works for your erectile dysfunction. Yes, your age is a factor in what dosage of Viagra is right for you. As people get older, their heart, liver, and kidneys don’t work as well as they once did. This can cause an older adult’s body to break down drugs slower than a younger adult’s body. As a result, drugs stay longer in the body, which can raise the risk of side effects. If you’re 65 years or older, your doctor may start you on a lower dosage of Viagra. The typical starting dosage of Viagra for a 70-year-old would be 25 milligrams (mg). For a 30-year-old who has no other medical conditions, the typical starting dosage would be 50 mg. Regardless of your age, you’ll take your prescribed dose about an hour before sex.

If the prescribed dosage of Viagra works well for you and doesn’t cause bothersome side effects, you’ll likely continue taking it. If a dosage works well but causes bothersome side effects, your doctor may suggest a lower dosage. If a dosage doesn’t work to help you get or maintain an erection, your doctor may increase your dosage. You should not take more Viagra than your doctor prescribes. The maximum recommended dosage of Viagra is 100 mg sildenafil generic per day. Taking higher doses of Viagra can increase your chances of having severe side effects, such as: dangerously low blood pressure, which may increase your risk for heart attack or stroke priapism, a painful erection that lasts longer than 4 hours and could lead to permanent damage to your penis if untreated The dosage of Viagra you’re prescribed may depend on several factors. the severity of your erectile dysfunction (ED) how well Viagra works for your ED other medications you take (see “Dosage adjustments” under “What is Viagra’s dosage?”) other conditions you have (see “Dosage adjustments” under “What is Viagra’s dosage?”) Optum Perks is owned by RVO Health. You’ll take Viagra by mouth about 1 hour before sexual activity. You can take Viagra with or without food. But the drug may not work as quickly if you take it with foods containing a lot of fat, such as fried foods.

About the Company

Relative to the flexible-dose, approximately one-third more men were satisfied with an initial and fixed dose of 100 mg. In addition, tolerability was similar, and improvements from baseline in outcomes on validated, ED-specific, patient-reported questionnaires were either similar (erectile function and the percentage of completely hard and fully rigid erections) or greater (emotional well-being and the overall sexual experience). The similarity in outcomes is not surprising given that almost 90% of the men in the flexible-dose trial titrated to 100 mg after 2 weeks. These data suggest prescription of an initial dose of 100 mg for men with ED, except in those for whom it is inappropriate. For most men with erectile dysfunction (ED), the prescribing information for sildenafil citrate (VIAGRA, Pfizer) recommends an initial dose of 50 mg, increased to 100 mg or decreased to 25 mg based on effectiveness and tolerability (flexible dose).1 However, 100 mg sildenafil produced optimal erection hardness (fully hard and rigid) in a substantial proportion of men with ED.2 In addition, in dose-optimization studies3, 4 and at the end of double-blind, placebo-controlled (DBPC) treatment in recent reports of flexible-dose trials,5, 6 100 mg was the dose that was used by most men.

Changes in sexual inhibition and excitation during PDE5I therapy

Thus, the 100-mg dose may provide some additional benefit beyond that achieved with the 50-mg dose and may be the most appropriate choice for initiation of therapy in many men. This report assesses erection hardness, erectile function, emotional well-being, satisfaction (disease related and treatment related) and the overall sexual experience in men treated with 100 mg fixed-dose sildenafil and in men treated with flexible-dose sildenafil (50 and 100 mg), using data from two DBPC trials that were similarly designed except for a fixed-dose vs flexible-dose regimen.7, 8 The objective was to assess the efficacy and tolerability of an initial dose of sildenafil 100 mg relative to the flexible-dosage regimen recommended in the prescribing information. One trial was a multinational (Republic of Korea, Russian Federation, Spain and Sweden), parallel-group, randomized (1:1:1) DBPC trial of fixed-dose sildenafil (50 or 100 mg) or placebo administered on demand over an 8-week treatment period.7 The other trial was a multicenter (United States), parallel-group, randomized (1:1) DBPC trial of flexible-dose sildenafil (50 or 100 mg) administered on demand over a 10-week treatment period.8 In both trials, ⩽1 dose of study medication was to be taken per day. Details of the patients and methods of the two trials have been published previously.7, 8 As described previously,7, 8 several efficacy assessments were conducted, including the Erection Hardness Score (EHS9), the International Index of Erectile Function (IIEF),10 the Self-Esteem And Relationship (SEAR) questionnaire,11, 12, 13 the Sexual Experience Questionnaire (SEX-Q),14 the Quality of Erection Questionnaire,15 the Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS)16 and three global efficacy assessment questions. Except for the global efficacy assessment questions, all assessment tools are validated, and a higher score indicates better outcome. In this case, Viagra could take up to an hour longer to start working. Viagra is a medication that you’ll only take when you need it, about 1 hour before sexual activity. You don’t have to take it regularly for it to be effective. If you forget to take Viagra an hour before sex, you can take it as soon as you remember. It starts working to improve erectile function as soon as 30 minutes after you take your dose. Its effects usually last about 4 hours. If you need help remembering to take your dose of Viagra before sex, try setting an alarm or downloading a reminder app.

Side Effects

This can cause an older adult’s body to break down drugs slower than a younger adult’s body. As a result, drugs stay longer in the body, which can raise the risk of side effects. If you’re 65 years or older, your doctor may start you on a lower dosage of Viagra. The typical starting dosage of Viagra for a 70-year-old would be 25 milligrams (mg). For a 30-year-old who has no other medical conditions, the typical starting dosage would be 50 mg.

Lifestyle changes

Regardless of your age, you’ll take your prescribed dose about an hour before sex. If the prescribed dosage of Viagra works well for you and doesn’t cause bothersome side effects, you’ll likely continue taking it. If a dosage works well but causes bothersome side effects, your doctor may suggest a lower dosage. If a dosage doesn’t work to help you get or maintain an erection, your doctor may increase your dosage. You should not take more Viagra than your doctor prescribes. Or ask your partner to remind you to take your dose about an hour before sex. Do not sildenafil oral jelly 100 mg use more Viagra than your doctor prescribes. Using more than this can lead to serious side effects. Call your doctor right away if you think you’ve taken too much Viagra. You can also call 800-222-1222 to reach America’s Poison Centers or use its online resource.

How long does it take for Viagra to work?

If your doctor recommends Viagra for you, they will prescribe the dosage that’s right for you. Remember, you should not change your dosage of Viagra without your doctor’s recommendation. Talk with your doctor if you have questions or concerns about your current dosage. Here are some questions you may want to discuss with your doctor: How long should I give Viagra to work before my dosage should be increased? Should I take a lower dosage of Viagra because of my other medications?

Are you currently using Sildenafil (Viagra, Revatio)?

Would a higher dosage of Viagra increase my risk for side effects? To learn more about Viagra, see these articles: Disclaimer: Healthline has made every effort to make 200mg sildenafil citrate certain that all information is factually correct, comprehensive, and up to date. The prescribing information for sildenafil citrate (VIAGRA, Pfizer, New York, NY, USA) recommends flexible dosing (50 mg initially, adjusted to 100 or 25 mg based on effectiveness and tolerability) in most men with erectile dysfunction (ED). In many men, however, 100 mg may be the most appropriate initial dose because it would reduce the need for titration and could prevent discouragement and treatment abandonment should 50 mg be insufficient. Results of two previously published double-blind, placebo-controlled sildenafil trials of similar design except for a fixed-dose vs flexible-dose regimen were analyzed. But if you have severe symptoms, call 911 (or your local emergency number) immediately or go to the nearest emergency room. The sections above describe the typical dosages provided by the drug’s manufacturer. If your doctor recommends Viagra for you, they will prescribe the dosage that’s right for you.

What happens if I overdose?

Safety data included all adverse events (AE) reports from the original trials. In this study, analyses were conducted on data from the intent-to-treat population for each study, which was defined as men who took at least one dose of study medication and who provided sufficient efficacy data for at least one efficacy analysis. Treatment effects were estimated using least square means from an analysis of covariance model for change scores from baseline to DBPC end of treatment on the IIEF, SEAR and SEX-Q, and the end-of-treatment EDITS Index score. The model used terms of baseline value, treatment group, investigator site and prognostic factors (age, ED duration, ED etiology) with P values calculated at the 5% significance level for the test of treatment group differences. Logistic regression (terms of treatment group, age, ED duration and ED etiology) was used to analyze the proportion of men who were satisfied with treatment (dichotomized EDITS score).

How does sildenafil work (mechanism of action)?

The percentages of EHS 3, EHS 4 and EHS 3 or 4 erections based on all of the event log data since the previous visit were analyzed as clustered binomial data using a logistic regression (terms for baseline percentage, treatment group, age, ED duration and ED etiology), with a scale adjustment for overdispersion (estimated by Williams method) and model; treatment effects were estimated using predicted percentages from the model. Pearson correlations were computed between the SEX-Q change from baseline scores and all other outcomes (change from baseline or end of treatment); 95% confidence intervals for the correlation coefficient were constructed using Fisher's Z-transformation. Remember, you should not change your dosage of Viagra without your doctor’s recommendation. Talk with your doctor if you have questions or concerns about your current dosage. Here are some questions you may want to discuss with your doctor: How long should I give Viagra to work before my dosage should be increased? Should I take a lower dosage of Viagra because of my other medications?

• Sildenafil can interact with nitrate medications, leading to dangerous drops in blood pressure.
• The medication is not suitable for everyone, especially those with heart conditions.
• Sildenafil is available by prescription to ensure safe and effective use.
• Generic versions of sildenafil are available and may be more affordable.
• The name "Pfizer" is commonly associated with the original branded Viagra.

Would a higher dosage of Viagra increase my risk for side effects? To learn more about Viagra, see these articles: Disclaimer: Healthline has made every effort to make 200mg sildenafil citrate certain that all information is factually correct, comprehensive, and up to date. The prescribing information for sildenafil citrate (VIAGRA, Pfizer, New York, NY, USA) recommends flexible dosing (50 mg initially, adjusted to 100 or 25 mg based on effectiveness and tolerability) in most men with erectile dysfunction (ED). In many men, however, 100 mg may be the most appropriate initial dose because it would reduce the need for titration and could prevent discouragement and treatment abandonment should 50 mg be insufficient. Results of two previously published double-blind, placebo-controlled sildenafil trials of similar design except for a fixed-dose vs flexible-dose regimen were analyzed. Relative to the flexible-dose, approximately one-third more men were satisfied with an initial and fixed dose of 100 mg. In addition, tolerability was similar, and improvements from baseline in outcomes on validated, ED-specific, patient-reported questionnaires were either similar (erectile function and the percentage of completely hard and fully rigid erections) or greater (emotional well-being and the overall sexual experience). The similarity in outcomes is not surprising given that almost 90% of the men in the flexible-dose trial titrated to 100 mg after 2 weeks. These data suggest prescription of an initial dose of 100 mg for men with ED, except in those for whom it is inappropriate. For most men with erectile dysfunction (ED), the prescribing information for sildenafil citrate (VIAGRA, Pfizer) recommends an initial dose of 50 mg, increased to 100 mg or decreased to 25 mg based on effectiveness and tolerability (flexible dose).1 However, 100 mg sildenafil produced optimal erection hardness (fully hard and rigid) in a substantial proportion of men with ED.2 In addition, in dose-optimization studies3, 4 and at the end of double-blind, placebo-controlled (DBPC) treatment in recent reports of flexible-dose trials,5, 6 100 mg was the dose that was used by most men. Thus, the 100-mg dose may provide some additional benefit beyond that achieved with the 50-mg dose and may be the most appropriate choice for initiation of therapy in many men. This report assesses erection hardness, erectile function, emotional well-being, satisfaction (disease related and treatment related) and the overall sexual experience in men treated with 100 mg fixed-dose sildenafil and in men treated with flexible-dose sildenafil (50 and 100 mg), using data from two DBPC trials that were similarly designed except for a fixed-dose vs flexible-dose regimen.7, 8 The objective was to assess the efficacy and tolerability of an initial dose of sildenafil 100 mg relative to the flexible-dosage regimen recommended in the prescribing information. One trial was a multinational (Republic of Korea, Russian Federation, Spain and Sweden), parallel-group, randomized (1:1:1) DBPC trial of fixed-dose sildenafil (50 or 100 mg) or placebo administered on demand over an 8-week treatment period.7 The other trial was a multicenter (United States), parallel-group, randomized (1:1) DBPC trial of flexible-dose sildenafil (50 or 100 mg) administered on demand over a 10-week treatment period.8 In both trials, ⩽1 dose of study medication was to be taken per day. Details of the patients and methods of the two trials have been published previously.7, 8 As described previously,7, 8 several efficacy assessments were conducted, including the Erection Hardness Score (EHS9), the International Index of Erectile Function (IIEF),10 the Self-Esteem And Relationship (SEAR) questionnaire,11, 12, 13 the Sexual Experience Questionnaire (SEX-Q),14 the Quality of Erection Questionnaire,15 the Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS)16 and three global efficacy assessment questions.

Warnings & Precautions

The typical starting dose of Viagra is 50 mg. But your doctor might prescribe a lower starting dosage of 25 mg, depending on several factors. Be sure to follow your doctor’s dosing instructions. For example, if you have liver or kidney problems, or if you’re taking certain other medications, your doctor might recommend starting with a 25 mg dosage. A 25-mg starting dosage may also be recommended if you’re 65 years or older.

When and How to Take Sildenafil for Best Results

See “Dosage adjustments” just above for details about when a lower dose might be prescribed. No, the dosage of Viagra isn’t based on a person’s weight. Instead, Viagra’s dosage is based on your age, how well your kidneys and liver are working, and how well the drug works for your erectile dysfunction. Yes, your age is a factor in what dosage of Viagra is right for you. As people get older, their heart, liver, and kidneys don’t work as well as they once did. Except for the global efficacy assessment questions, all assessment tools are validated, and a higher score indicates better outcome. Safety data included all adverse events (AE) reports from the original trials. In this study, analyses were conducted on data from the intent-to-treat population for each study, which was defined as men who took at least one dose of study medication and who provided sufficient efficacy data for at least one efficacy analysis. Treatment effects were estimated using least square means from an analysis of covariance model for change scores from baseline to DBPC end of treatment on the IIEF, SEAR and SEX-Q, and the end-of-treatment EDITS Index score. The model used terms of baseline value, treatment group, investigator site and prognostic factors (age, ED duration, ED etiology) with P values calculated at the 5% significance level for the test of treatment group differences.

Key Takeaways:

It starts working to improve erectile function as soon as 30 minutes after you take your dose. Its effects usually last about 4 hours. If you need help remembering to take your dose of Viagra before sex, try setting an alarm or downloading a reminder app. Or ask your partner to remind you to take your dose about an hour before sex. Do not sildenafil oral jelly 100 mg use more Viagra than your doctor prescribes.

What is Viagra tablet used for?

Using more than this can lead to serious side effects. Call your doctor right away if you think you’ve taken too much Viagra. You can also call 800-222-1222 to reach America’s Poison Centers or use its online resource. But if you have severe symptoms, call 911 (or your local emergency number) immediately or go to the nearest emergency room. The sections above describe the typical dosages provided by the drug’s manufacturer. Logistic regression (terms of treatment group, age, ED duration and ED etiology) was used to analyze the proportion of men who were satisfied with treatment (dichotomized EDITS score).

• Sildenafil is a phosphodiesterase type 5 inhibitor specific to erectile dysfunction.
• It has been proven effective in improving sexual performance in men with ED.
• The medication is contraindicated for men taking certain antihypertensives or antidepressants.
• The onset of action varies depending on whether taken on an empty stomach.
• Always adhere to the prescribed amount; excess intake can reduce efficacy or cause harm.

The percentages of EHS 3, EHS 4 and EHS 3 or 4 erections based on all of the event log data since the previous visit were analyzed as clustered binomial data using a logistic regression (terms for baseline percentage, treatment group, age, ED duration and ED etiology), with a scale adjustment for overdispersion (estimated by Williams method) and model; treatment effects were estimated using predicted percentages from the model. Pearson correlations were computed between the SEX-Q change from baseline scores and all other outcomes (change from baseline or end of treatment); 95% confidence intervals for the correlation coefficient were constructed using Fisher's Z-transformation.