Sildenafil citrate 100 mg starting dose in men with erectile dysfunction in an international, double-blind, placebo-controlled study: effect on the sexual experience and reducing feelings of anxiety about the next intercourse attempt

Sildenafil > sildenafil citrate 100 mg


an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis. sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). It is uncertain whether PDE5 inhibitors directly cause the vision loss. Stop taking SILDENAFIL CITRATE TABLETS and call your healthcare provider right away if you have sudden vision loss in one or both eyes.

Patient Type Recommended Dose Notes
Adult Men 50-100 mg approximately 1 hour before activity Max dose per event; not to exceed 100 mg
Elderly Patients Start at lower end, 25-50 mg Increased sensitivity and risk of side effects
Patients with Kidney or Liver Disease Dose adjustment may be necessary Consult healthcare provider

Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking SILDENAFIL CITRATE TABLETS and contact a doctor right away. The most common side effects of SILDENAFIL CITRATE TABLETS are: abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision In addition, heart attack, stroke, irregular heartbeats and death have happened rarely in men taking SILDENAFIL CITRATE TABLETS. Most, but not all, of these men had heart problems before taking SILDENAFIL CITRATE TABLETS. It is not known if SILDENAFIL CITRATE TABLETS caused these problems. Tell your healthcare provider if you have any side effect that bothers you or does not go away. These are not all the possible side effects of SILDENAFIL CITRATE TABLETS. For more information, ask your healthcare provider or pharmacist.

  • Sildenafil citrate 100 mg is a medication primarily used to treat erectile dysfunction.
  • The typical recommended dose of sildenafil citrate is 50 to 100 mg.
  • It works by increasing blood flow to the penis for improved erections.

You may report side effects to FDA at 1-800-FDA-1088.

5.2 Prolonged Erection and Priapism

How should I store SILDENAFIL CITRATE TABLETS? Store SILDENAFIL CITRATE TABLETS at room temperature between 68°F to 77°F (20°C to 25°C). Keep SILDENAFIL CITRATE TABLETS and all medicines out of the reach of children. General information about the safe and effective use of SILDENAFIL CITRATE TABLETS. Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use SILDENAFIL CITRATE TABLETS for a condition for which it was not prescribed.

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Do not give SILDENAFIL CITRATE TABLETS to other people, even if they have the same symptoms that you have. This Patient Information leaflet summarizes the most important information about SILDENAFIL CITRATE TABLETS. If you would like more information, talk with your healthcare provider. You can ask your healthcare provider or pharmacist for information about SILDENAFIL CITRATE TABLETS that is written for health professionals.

Alternate presentations in this family

You may report side effects to FDA at 1-800-FDA-1088. How should I store SILDENAFIL CITRATE TABLETS? Store SILDENAFIL CITRATE TABLETS at room temperature between 68°F to 77°F (20°C to 25°C). Keep SILDENAFIL CITRATE TABLETS and all medicines out of the reach of children. General information about the safe and effective use of SILDENAFIL CITRATE TABLETS.

Antihypertensive and α-Adrenergic Blocking Agents

Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use SILDENAFIL CITRATE TABLETS for a condition for which it was not prescribed. Do not give SILDENAFIL CITRATE TABLETS to other people, even if they have the same symptoms that you have. This Patient Information leaflet summarizes the most important information about SILDENAFIL CITRATE TABLETS. If you would like more information, talk with your healthcare provider.

Dosage Forms & Strengths

You can ask your healthcare provider or pharmacist for information about SILDENAFIL CITRATE TABLETS that is written for health professionals. For more information, go to or call 1-800-438-1985 What are the ingredients in SILDENAFIL CITRATE TABLETS? This Patient Information has been approved by the U.S. Food and Drug Administration. This product's label may have been updated. For more information, go to or call 1-800-438-1985 What are the ingredients in SILDENAFIL CITRATE TABLETS?

Research Area Focus Potential Impact
New Formulations Long-acting or transdermal options Improved convenience and adherence
Combination Therapy Sildenafil with other agents Enhanced efficacy or reduced doses
Genetic Factors in Response Personalized dosing based on genetics Minimize side effects, maximize effectiveness
New Indications Expanding uses beyond current approved purposes Broader therapeutic applications

This Patient Information has been approved by the U.S. Food and Drug Administration. This product's label may have been updated. For current full buy sildenafil citrate online canada prescribing information, please visit Cardura (doxazosin mesylate), and Minipress (prazosin HCl) are registered trademarks of Pfizer Inc. The other brands listed are trademarks of their respective owners and are not trademarks of Pfizer Inc. The makers of these brands are not affiliated with and do not endorse Pfizer Inc or its products. USP Certificates/Product Information Sheets and Valid Use Dates View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information. View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information. 1The Harmonized System (HS) code provided on this webpage is for informational purposes only and is subject to change without notice. The exporter and/or importer of record is responsible for determining the accuracy of items at the time of export/import per U.S. regulations. USP is not responsible for the accuracy or completeness of the information furnished. 2USP procures materials worldwide and most foreign materials do not undergo a fundamental change during the packaging process at USP that would substantially transform the item resulting in a country of origin change from the foreign origin to the United States. Under the Rules of Origin the original foreign country of origin would remain. Animal, Plant, Fish) may require special country importation requirements.USP recommends you contact your country competent authorities to determine if any certifications, permits or licenses may be required prior to ordering.Material Origins are found within the Product under Origin Information. 50 mg PO ~1 hr before sexual activity; however, may be taken anywhere from 30 min to 4 hr before sexual activity Maximum dosing frequency is once per day Based on effectiveness and toleration, may increase dose to maximum of 100 mg or decrease to 25 mg Indicated for treatment of pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group I) to improve exercise ability and delay clinical worsening Revatio (PO), Liqrev: 20 mg PO TID; may titrate up to 80 mg TID, if required, based on symptoms and tolerability Revatio (IV): 10 mg IV bolus TID 10-mg IV predicted to provide pharmacologic effect equivalent to 10-mg oral dose Do not exceed recommended PO/IV dose Viagra, VibriqueSevere (eg, cirrhosis): Consider initial dose of 25 mg Severe (eg, cirrhosis): Consider initial dose of 25 mg RevatioMild or moderate (Child-Pugh A or B): No dose adjustment requiredSevere (Child-Pugh C): Not studied Mild or moderate (Child-Pugh A or B): No dose adjustment required Viagra, VibriqueMild or moderate (CrCl 30-80 mL/min): No dose adjustment requiredSevere (CrCl <30 mL/min): Consider initial dose of 25 mg Mild or moderate (CrCl 30-80 mL/min): No dose adjustment required Severe (CrCl <30 mL/min): Consider initial dose of 25 mg RevatioAny severity, including severe (CrCl <30 mL/min): No dose adjustment required Any severity, including severe (CrCl <30 mL/min): No dose adjustment required Indicated in children aged 1-17 years for treatment of pulmonary arterial hypertension (PAH) (WHO Group I) to improve exercise ability and, in pediatric patients too young to perform standard exercise testing, pulmonary hemodynamics thought to underly improvements in exercise 20-45 kg: 20 mg PO TID Maximum dose in pediatric patients not identified Based on experience in adults, dose may be titrated up to 40 mg TID, if required, based on symptoms and tolerability Mild or moderate (Child-Pugh A or B): No dose adjustment required Any severity, including severe (CrCl <30 mL/min): No dose adjustment required ≥65 years: 25 mg PO initially ~1 hr before sexual activity; however, may be taken anywhere from 30 min to 4 hr before sexual activity Maximum dosing frequency is once per day Based on effectiveness and toleration, may increase dose to maximum of 100 mg or decrease to 25 mg Indicated for treatment of pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group I) to improve exercise ability and delay clinical worsening PO: 20 mg PO TID; may titrate up to 80 mg TID, if required , based on symptoms and tolerability 10-mg IV predicted to provide pharmacologic effect equivalent to 10-mg oral dose Recommended PO/IV dose not to be exceeded Adding Revatio to bosentan does not have any beneficial effect on exercise capacity Clinical trials found no significant difference in response between elderly patients and younger adults; however, cautious dose selection should be considered in elderly because of greater frequency of decreased hepatic, renal, and cardiac function, as well as comorbid conditions and concomitant pharmacotherapy Compared with healthy younger volunteers, healthy elderly volunteers (≥65 years) had reduced clearance of sildenafil, resulting in approximately 84% and 107% higher plasma concentrations of sildenafil and its active N-desmethyl metabolite, respectively atazanaviratazanavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Never use combination with chronic sildenafil for PAH cobicistatcobicistat will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.

7.2 Alpha-blockers

When used chronically for PAH, sildenafil is contraindicated for use with cobicistat; if used for erectile dysfunction, do not exceed sildenafil 25 mg q48hr cobicistat will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Cobicistat is a CYP3A4 inhibitor; contraindicated with CYP3A4 substrates for which elevated plasma concentrations are associated with serious and/or life-threatening events; contraindication applies to chronic administration of sildenafil for PAH; for ED, not to exceed 25 mg in 48 hr.

7.4 Ritonavir and other CYP3A4 inhibitors

an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis. sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION).

Noms commerciaux

It is uncertain whether PDE5 inhibitors directly cause the vision loss. Stop taking SILDENAFIL CITRATE TABLETS and call your healthcare provider right away if you have sudden vision loss in one or both eyes. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking SILDENAFIL CITRATE TABLETS and contact a doctor right away. The most common side effects of SILDENAFIL CITRATE TABLETS are: abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision In addition, heart attack, stroke, irregular heartbeats and death have happened rarely in men taking SILDENAFIL CITRATE TABLETS.

Drugs Affecting Gastric Acidity

Most, but not all, of these men had heart problems before taking SILDENAFIL CITRATE TABLETS. It is not known if SILDENAFIL CITRATE TABLETS caused these problems. Tell your healthcare provider if you have any side effect that bothers you or does not go away. These are not all the possible side effects of SILDENAFIL CITRATE TABLETS. For more information, ask your healthcare provider or pharmacist. nelfinavirnelfinavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. nelfinavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.

Notes et références

For current full buy sildenafil citrate online canada prescribing information, please visit Cardura (doxazosin mesylate), and Minipress (prazosin HCl) are registered trademarks of Pfizer Inc. The other brands listed are trademarks of their respective owners and are not trademarks of Pfizer Inc. The makers of these brands are not affiliated with and do not endorse Pfizer Inc or its products. USP Certificates/Product Information Sheets and Valid Use Dates View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information. View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information.

Revatio Tablets

1The Harmonized System (HS) code provided on this webpage is for informational purposes only and is subject to change without notice. The exporter and/or importer of record is responsible for determining the accuracy of items at the time of export/import per U.S. regulations. USP is not responsible for the accuracy or completeness of the information furnished. 2USP procures materials worldwide and most foreign materials do not undergo a fundamental change during the packaging process at USP that would substantially transform the item resulting in a country of origin change from the foreign origin to the United States.

Dosage for pulmonary arterial hypertension (PAH)

Under the Rules of Origin the original foreign country of origin would remain. Animal, Plant, Fish) may require special country importation requirements.USP recommends you contact your country competent authorities to determine if any certifications, permits or licenses may be required prior to ordering.Material Origins are found within the Product under Origin Information. 50 mg PO ~1 hr before sexual activity; however, may be taken anywhere from 30 min to 4 hr before sexual activity Maximum dosing frequency is once per day Based on effectiveness and toleration, may increase dose to maximum of 100 mg or decrease to 25 mg Indicated for treatment of pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group I) to improve exercise ability and delay clinical worsening Revatio (PO), Liqrev: 20 mg PO TID; may titrate up to 80 mg TID, if required, based on symptoms and tolerability Revatio (IV): 10 mg IV bolus TID 10-mg IV predicted to provide pharmacologic effect equivalent to 10-mg oral dose Do not exceed recommended PO/IV dose Viagra, VibriqueSevere (eg, cirrhosis): Consider initial dose of 25 mg Severe (eg, cirrhosis): Consider initial dose of 25 mg RevatioMild or moderate (Child-Pugh A or B): No dose adjustment requiredSevere (Child-Pugh C): Not studied Mild or moderate (Child-Pugh A or B): No dose adjustment required Viagra, VibriqueMild or moderate (CrCl 30-80 mL/min): No dose adjustment requiredSevere (CrCl <30 mL/min): Consider initial dose of 25 mg Mild or moderate (CrCl 30-80 mL/min): No dose adjustment required Severe (CrCl <30 mL/min): Consider initial dose of 25 mg RevatioAny severity, including severe (CrCl <30 mL/min): No dose adjustment required Any severity, including severe (CrCl <30 mL/min): No dose adjustment required Indicated in children aged 1-17 years for treatment of pulmonary arterial hypertension (PAH) (WHO Group I) to improve exercise ability and, in pediatric patients too young to perform standard exercise testing, pulmonary hemodynamics thought to underly improvements in exercise 20-45 kg: 20 mg PO TID Maximum dose in pediatric patients not identified Based on experience in adults, dose may be titrated up to 40 mg TID, if required, based on symptoms and tolerability Mild or moderate (Child-Pugh A or B): No dose adjustment required Any severity, including severe (CrCl <30 mL/min): No dose adjustment required ≥65 years: 25 mg PO initially ~1 hr before sexual activity; however, may be taken anywhere from 30 min to 4 hr before sexual activity Maximum dosing frequency is once per day Based on effectiveness and toleration, may increase dose to maximum of 100 mg or decrease to 25 mg Indicated for treatment of pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group I) to improve exercise ability and delay clinical worsening PO: 20 mg PO TID; may titrate up to 80 mg TID, if required , based on symptoms and tolerability 10-mg IV predicted to provide pharmacologic effect equivalent to 10-mg oral dose Recommended PO/IV dose not to be exceeded Adding Revatio to bosentan does not have any beneficial effect on exercise capacity Clinical trials found no significant difference in response between elderly patients and younger adults; however, cautious dose selection should be considered in elderly because of greater frequency of decreased hepatic, renal, and cardiac function, as well as comorbid conditions and concomitant pharmacotherapy Compared with healthy younger volunteers, healthy elderly volunteers (≥65 years) had reduced clearance of sildenafil, resulting in approximately 84% and 107% higher plasma concentrations of sildenafil and its active N-desmethyl metabolite, respectively atazanaviratazanavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Never use combination with chronic sildenafil for PAH cobicistatcobicistat will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. When used chronically for PAH, sildenafil is contraindicated for use with cobicistat; if used for erectile dysfunction, do not exceed sildenafil 25 mg q48hr cobicistat will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Coadministration contraindicated if sildenafil used for pulmonary arterical hypertension. Reduce sildenafil dose if used for erectile dysfunction. nirmatrelvir/ritonavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. nitroglycerin rectalsildenafil increases effects of nitroglycerin rectal by additive vasodilation. Use of nitroglycerin within a few days of PDE5 inhibitors is contraindicated. PDE5 inhibitors have been shown to potentiate the hypotensive effects of organic nitrates.

Detection in biological fluids

Cobicistat is a CYP3A4 inhibitor; contraindicated with CYP3A4 substrates for which elevated plasma concentrations are associated with serious and/or life-threatening events; contraindication applies to chronic administration of sildenafil for PAH; for ED, not to exceed 25 mg in 48 hr. nelfinavirnelfinavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. nelfinavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Coadministration contraindicated if sildenafil used for pulmonary arterical hypertension. Reduce sildenafil dose if used for erectile dysfunction.

Pulmonary Arterial Hypertension

nirmatrelvir/ritonavir will increase the level or effect of sildenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. nitroglycerin rectalsildenafil increases effects of nitroglycerin rectal by additive vasodilation. Use of nitroglycerin within a few days of PDE5 inhibitors is contraindicated. PDE5 inhibitors have been shown to potentiate the hypotensive effects of organic nitrates. sildenafil increases effects of nitroglycerin rectal by additive vasodilation.

Jet lag research

Either increases effects of the other by additive vasodilation. Coadministration of PDE-5 inhibitors (eg, avanafil, sildenafil, tadalafil, vardenafil) and guanylate cyclase stimulators (eg, riociguat) is contraindicated due to risk of additive hypotension; do not administer within 24 hr of each other. Either increases effects of the other by pharmacodynamic synergism. Coadministration of vericiguat with PDE-5 inhibitors may result in additive hypotensive effects. alfuzosinsildenafil increases effects of alfuzosin by pharmacodynamic synergism. sildenafil increases effects of nitroglycerin rectal by additive vasodilation. Either increases effects of the other by additive vasodilation. Coadministration of PDE-5 inhibitors (eg, avanafil, sildenafil, tadalafil, vardenafil) and guanylate cyclase stimulators (eg, riociguat) is contraindicated due to risk of additive hypotension; do not administer within 24 hr of each other.

  • Common side effects include headache, flushing, nasal congestion, and dizziness.
  • Serious side effects like vision loss or prolonged erections require immediate medical attention.
  • Always consult a healthcare provider before starting sildenafil 100 mg.

Either increases effects of the other by pharmacodynamic synergism.

  • Sildenafil citrate 100 mg may interact with other medications, affecting how they work.
  • A healthcare professional should review your medications to avoid adverse interactions.
  • Avoid combining sildenafil with certain antibiotics, antifungals, or blood pressure medications.

Coadministration of vericiguat with PDE-5 inhibitors may result in additive hypotensive effects.

Further information

alfuzosinsildenafil increases effects of alfuzosin by pharmacodynamic synergism.