Most common adverse reactions greater than or equal to 3% and more frequent than placebo were epistaxis, headache, dyspepsia, flushing, insomnia, erythema, dyspnea, and rhinitis. To report SUSPECTED ADVERSE REACTIONS, contact AvKARE, Inc. at 1-855-361-3993 or FDA at 1-800-FDA-1088 or See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling. Table of Contents FULL PRESCRIBING INFORMATION: CONTENTS*RECENT MAJOR CHANGES1 INDICATIONS AND USAGE2 DOSAGE AND ADMINISTRATION2.1 Sildenafil Tablets3 DOSAGE FORMS AND STRENGTHS4 CONTRAINDICATIONS5 WARNINGS AND PRECAUTIONS5.1 Hypotension5.2 Worsening Pulmonary Vascular Occlusive Disease5.3 Epistaxis5.4 Visual Loss5.5 Hearing Loss5.6 Combination with other PDE-5 Inhibitors5.7 Priapism5.8 Vaso-occlusive Crisis in Patients with Pulmonary Hypertension Secondary to Sickle Cell Anemia6 ADVERSE REACTIONS6.1 Clinical Trials Experience6.2 Postmarketing Experience7 DRUG INTERACTIONS8 USE IN SPECIFIC POPULATIONS8.1 Pregnancy8.2 Lactation8.4 Pediatric Use8.5 Geriatric Use8.6 Patients with Hepatic Impairment8.7 Patients with Renal Impairment10 OVERDOSAGE11 DESCRIPTION12 CLINICAL PHARMACOLOGY12.1 Mechanism of Action12.2 Pharmacodynamics12.3 Pharmacokinetics13 NONCLINICAL TOXICOLOGY13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility14 CLINICAL STUDIES16 HOW SUPPLIED/STORAGE AND HANDLING17 PATIENT COUNSELING INFORMATION*Sections or subsections omitted from the full prescribing information are not listed. Sections or subsections omitted from the full prescribing information are not listed.

What side effects can this medication cause?

Most common adverse reactions greater than or equal to 3% and more frequent than placebo were epistaxis, headache, dyspepsia, flushing, insomnia, erythema, dyspnea, and rhinitis. To report SUSPECTED ADVERSE REACTIONS, contact AvKARE, Inc. at 1-855-361-3993 or FDA at 1-800-FDA-1088 or See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling. Table of Contents FULL PRESCRIBING INFORMATION: CONTENTS*RECENT MAJOR CHANGES1 INDICATIONS AND USAGE2 DOSAGE AND ADMINISTRATION2.1 Sildenafil Tablets3 DOSAGE FORMS AND STRENGTHS4 CONTRAINDICATIONS5 WARNINGS AND PRECAUTIONS5.1 Hypotension5.2 Worsening Pulmonary Vascular Occlusive Disease5.3 Epistaxis5.4 Visual Loss5.5 Hearing Loss5.6 Combination with other PDE-5 Inhibitors5.7 Priapism5.8 Vaso-occlusive Crisis in Patients with Pulmonary Hypertension Secondary to Sickle Cell Anemia6 ADVERSE REACTIONS6.1 Clinical Trials Experience6.2 Postmarketing Experience7 DRUG INTERACTIONS8 USE IN SPECIFIC POPULATIONS8.1 Pregnancy8.2 Lactation8.4 Pediatric Use8.5 Geriatric Use8.6 Patients with Hepatic Impairment8.7 Patients with Renal Impairment10 OVERDOSAGE11 DESCRIPTION12 CLINICAL PHARMACOLOGY12.1 Mechanism of Action12.2 Pharmacodynamics12.3 Pharmacokinetics13 NONCLINICAL TOXICOLOGY13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility14 CLINICAL STUDIES16 HOW SUPPLIED/STORAGE AND HANDLING17 PATIENT COUNSELING INFORMATION*Sections or subsections omitted from the full prescribing information are not listed. Sections or subsections omitted from the full prescribing information are not listed.

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1 INDICATIONS AND USAGE Sildenafil tablets are indicated for the treatment of pulmonary arterial hypertension (WHO Group I) in adults to improve exercise ability and delay clinical worsening. The delay in clinical worsening was demonstrated when sildenafil tablets were added to background epoprostenol therapy [see Clinical Studies (14)].Studies establishing effectiveness were short-term (12 to 16 weeks), and included predominately patients with New York Heart Association (NYHA) Functional Class II-III symptoms and idiopathic etiology (71%) or associated with connective tissue disease (CTD) (25%). Sildenafil tablets are indicated for the treatment of pulmonary arterial hypertension (WHO Group I) in adults to improve exercise ability and delay clinical worsening. The delay in clinical worsening was demonstrated when sildenafil tablets were added to background epoprostenol therapy [see Clinical Studies (14)]. Studies establishing effectiveness were short-term (12 to 16 weeks), and included predominately patients with New York Heart Association (NYHA) Functional Class II-III symptoms and idiopathic etiology (71%) or associated with connective tissue disease (CTD) (25%). 1 INDICATIONS AND USAGE Sildenafil tablets are indicated for the treatment of pulmonary arterial hypertension (WHO Group I) in adults to improve exercise ability and delay clinical worsening.

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The delay in clinical worsening was demonstrated when sildenafil tablets were added to background epoprostenol therapy [see Clinical Studies (14)].Studies establishing effectiveness were short-term (12 to 16 weeks), and included predominately patients with New York Heart Association (NYHA) Functional Class II-III symptoms and idiopathic etiology (71%) or associated with connective tissue disease (CTD) (25%). Sildenafil tablets are indicated for the treatment of pulmonary arterial hypertension (WHO Group I) in adults to improve exercise ability and delay clinical worsening. The delay in clinical worsening was demonstrated when sildenafil tablets were added to background epoprostenol therapy [see Clinical Studies (14)]. Studies establishing effectiveness were short-term (12 to 16 weeks), and included predominately patients with New York Heart Association (NYHA) Functional Class II-III symptoms and idiopathic etiology (71%) or associated with connective tissue disease (CTD) (25%). 2 DOSAGE AND ADMINISTRATION 2.1 Sildenafil TabletsOral DosageThe recommended dosage of sildenafil tablet is 20 mg three times a day [see Clinical Studies (14)].Pediatric use information is approved for Viatris Specialty LLC’s, REVATIO (sildenafil) tablets. However, due to Viatris Specialty LLC’s marketing exclusivity rights, this drug product is not labeled with that information. Pediatric use information is approved for Viatris Specialty LLC’s, REVATIO (sildenafil) tablets. 4 CONTRAINDICATIONS Sildenafil tablets are contraindicated in patients with:Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension [see Warnings and Precautions (5.2)] .Concomitant use of riociguat, a guanylate cyclase stimulator. PDE-5 inhibitors, including sildenafil, may potentiate the hypotensive effects of riociguat.Known hypersensitivity to oral sildenafil sildenafil or any component of the tablet. Hypersensitivity, including anaphylactic reaction, anaphylactic shock and anaphylactoid reaction, has been reported in association with the use of sildenafil. Sildenafil tablets are contraindicated in patients with: Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension [see Warnings and Precautions (5.2)] .

5.3 Epistaxis

In many cases, medical follow-up information was limited. It is not possible to determine whether these reported events are related directly to the use of sildenafil citrate, to the patient’s underlying risk factors for hearing loss, a combination of these factors, or to other factors.Advise patients to seek prompt medical attention in the event of sudden sildenafil 100 mg tab decrease or loss of hearing while taking PDE-5 inhibitors, including sildenafil citrate.5.6 Combination with other PDE-5 InhibitorsSildenafil is also marketed as VIAGRA ®. The safety and efficacy of combinations of sildenafil citrate with VIAGRA or other PDE-5 inhibitors have not been studied. Inform patients taking sildenafil citrate not to take VIAGRA or other PDE-5 inhibitors.5.7 PriapismUse sildenafil citrate with caution in patients with anatomical deformation of the penis (e.g., angulation, cavernosal fibrosis, or Peyronie’s disease) or in patients who have conditions, which may predispose them to priapism (e.g., sickle cell anemia, multiple myeloma, or leukemia). In the event of an erection that persists longer than 4 hours, the patient should seek immediate medical assistance.

Warnings for people with certain health conditions

If priapism (painful erection greater than 6 hours in duration) is not treated immediately, penile tissue damage and permanent loss of potency could result.5.8 Vaso-occlusive Crisis in Patients with Pulmonary Hypertension Secondary to Sickle Cell AnemiaIn a small, prematurely terminated study of patients with pulmonary hypertension (PH) secondary to sickle cell disease, vaso-occlusive crises requiring hospitalization were more commonly reported by patients who received sildenafil citrate than by those randomized to placebo. The effectiveness and safety of sildenafil citrate in the treatment of PAH secondary to sickle cell anemia has not been established. Sildenafil citrate has vasodilatory properties, resulting in mild and transient decreases in blood pressure. Monitor blood pressure when co-administering blood pressure lowering drugs with sildenafil citrate. Pulmonary vasodilators may significantly worsen the cardiovascular status of patients with pulmonary veno-occlusive disease (PVOD). PDE-5 inhibitors, including sildenafil, may potentiate the hypotensive effects of riociguat. Known hypersensitivity to sildenafil or any component of the tablet. 5 WARNINGS AND PRECAUTIONS 5.1 HypotensionSildenafil citrate has vasodilatory properties, resulting in mild and transient decreases in blood pressure. Before prescribing sildenafil citrate, carefully consider whether patients with certain underlying conditions could be adversely affected by such vasodilatory effects (e.g., patients on antihypertensive therapy or with resting hypotension [BP less than 90/50], fluid depletion, severe left ventricular outflow obstruction, or autonomic dysfunction). Monitor blood pressure when co-administering blood pressure lowering drugs with sildenafil citrate.5.2 Worsening Pulmonary Vascular Occlusive DiseasePulmonary vasodilators may significantly worsen the cardiovascular status of patients with pulmonary veno-occlusive disease (PVOD). Since there are no clinical data on administration of sildenafil citrate to patients with veno-occlusive disease, administration of sildenafil citrate to such patients is not recommended. Should signs of pulmonary edema occur when sildenafil citrate is administered, consider the possibility of associated PVOD.5.3 EpistaxisThe incidence of epistaxis was 13% in patients taking sildenafil citrate with PAH secondary to CTD.

  • Sildenafil 20 mg tablets are used primarily to treat erectile dysfunction.
  • They work by increasing blood flow to the penis.
  • Typically, the medication is taken 30-60 minutes before activity.
  • The effects of sildenafil can last up to 4-6 hours.
  • Do not take more than one tablet per day.

This effect was not seen in idiopathic PAH (sildenafil citrate 3%, placebo 2%) patients.

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The incidence of epistaxis was also higher in sildenafil citrate-treated patients with a concomitant oral vitamin K antagonist (9% versus 2% in those not treated with concomitant vitamin K antagonist).The safety of sildenafil citrate is unknown in patients with bleeding disorders or active peptic ulceration.5.4 Visual LossWhen used to treat erectile dysfunction, non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including permanent loss of vision, has been reported post-marketing in temporal association with the use of PDE-5 inhibitors, including sildenafil.

5.5 Hearing Loss

Before prescribing sildenafil citrate, carefully consider whether patients with certain underlying conditions could be adversely affected by such vasodilatory effects (e.g., patients on antihypertensive therapy or with resting hypotension [BP less than 90/50], fluid depletion, severe left ventricular outflow obstruction, or autonomic dysfunction). Monitor blood pressure when co-administering blood pressure lowering drugs with sildenafil citrate.5.2 Worsening Pulmonary Vascular Occlusive DiseasePulmonary vasodilators may significantly worsen the cardiovascular status of patients with pulmonary veno-occlusive disease (PVOD). Since there are no clinical data on administration of sildenafil citrate to patients with veno-occlusive disease, administration of sildenafil citrate to such patients is not recommended. Should signs of pulmonary edema occur when sildenafil citrate is administered, consider the possibility of associated PVOD.5.3 EpistaxisThe incidence of epistaxis was 13% in patients taking sildenafil citrate with PAH secondary to CTD. This effect was not seen in idiopathic PAH (sildenafil citrate 3%, placebo 2%) patients.

Missed Dose

The incidence of epistaxis was also higher in sildenafil citrate-treated patients with a concomitant oral vitamin K antagonist (9% versus 2% in those not treated with concomitant vitamin K antagonist).The safety of sildenafil citrate is unknown in patients with bleeding disorders or active peptic ulceration.5.4 Visual LossWhen used to treat erectile dysfunction, non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including permanent loss of vision, has been reported post-marketing in temporal association with the use of PDE-5 inhibitors, including sildenafil. Most patients had underlying anatomic or vascular risk factors for developing NAION, including low cup to disc ratio (“crowded disc”).Advise patients to seek immediate medical attention in the event of a sudden loss of vision in one or both eyes while taking sildenafil citrate. There are no controlled clinical data on the safety or efficacy of sildenafil citrate in patients with retinitis pigmentosa, a minority of whom have genetic disorders of retinal phosphodiesterases. Therefore, use of sildenafil citrate in patients with retinitis pigmentosa is not recommended.5.5 Hearing LossCases of sudden decrease or loss of hearing, which may be accompanied by tinnitus and dizziness, have been reported in temporal association with the use of PDE-5 inhibitors, including sildenafil citrate. In some of the cases, medical conditions and other factors were reported that may have played a role. Most patients had underlying anatomic or vascular risk factors for developing NAION, including low cup to disc ratio (“crowded disc”).Advise patients to seek immediate medical attention in the event of a sudden loss of vision in one or both eyes while taking sildenafil citrate. There are no controlled clinical data on the safety or efficacy of sildenafil citrate in patients with retinitis pigmentosa, a minority of whom have genetic disorders of retinal phosphodiesterases.

Comparing Which Lasts Longer

2 DOSAGE AND ADMINISTRATION 2.1 Sildenafil TabletsOral DosageThe recommended dosage of sildenafil tablet is 20 mg three times a day [see Clinical Studies (14)].Pediatric use information is approved for Viatris Specialty LLC’s, REVATIO (sildenafil) tablets. However, due to Viatris Specialty LLC’s marketing exclusivity rights, this drug product is not labeled with that information. Pediatric use information is approved for Viatris Specialty LLC’s, REVATIO (sildenafil) tablets. 4 CONTRAINDICATIONS Sildenafil tablets are contraindicated in patients with:Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension [see Warnings and Precautions (5.2)] .Concomitant use of riociguat, a guanylate cyclase stimulator. PDE-5 inhibitors, including sildenafil, may potentiate the hypotensive effects of riociguat.Known hypersensitivity to oral sildenafil sildenafil or any component of the tablet.

Dosage Forms & Strengths

Hypersensitivity, including anaphylactic reaction, anaphylactic shock and anaphylactoid reaction, has been reported in association with the use of sildenafil. Sildenafil tablets are contraindicated in patients with: Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension [see Warnings and Precautions (5.2)] . PDE-5 inhibitors, including sildenafil, may potentiate the hypotensive effects of riociguat. Known hypersensitivity to sildenafil or any component of the tablet. 5 WARNINGS AND PRECAUTIONS 5.1 HypotensionSildenafil citrate has vasodilatory properties, resulting in mild and transient decreases in blood pressure. Therefore, use of sildenafil citrate in patients with retinitis pigmentosa is not recommended.5.5 Hearing LossCases of sudden decrease or loss of hearing, which may be accompanied by tinnitus and dizziness, have been reported in temporal association with the use of PDE-5 inhibitors, including sildenafil citrate. In some of the cases, medical conditions and other factors were reported that may have played a role. In many cases, medical follow-up information was limited. It is not possible to determine whether these reported events are related directly to the use of sildenafil citrate, to the patient’s underlying risk factors for hearing loss, a combination of these factors, or to other factors.Advise patients to seek prompt medical attention in the event of sudden sildenafil 100 mg tab decrease or loss of hearing while taking PDE-5 inhibitors, including sildenafil citrate.5.6 Combination with other PDE-5 InhibitorsSildenafil is also marketed as VIAGRA ®. The safety and efficacy of combinations of sildenafil citrate with VIAGRA or other PDE-5 inhibitors have not been studied. Inform patients taking sildenafil citrate not to take VIAGRA or other PDE-5 inhibitors.5.7 PriapismUse sildenafil citrate with caution in patients with anatomical deformation of the penis (e.g., angulation, cavernosal fibrosis, or Peyronie’s disease) or in patients who have conditions, which may predispose them to priapism (e.g., sickle cell anemia, multiple myeloma, or leukemia). In the event of an erection that persists longer than 4 hours, the patient should seek immediate medical assistance. If priapism (painful erection greater than 6 hours in duration) is not treated immediately, penile tissue damage and permanent loss of potency could result.5.8 Vaso-occlusive Crisis in Patients with Pulmonary Hypertension Secondary to Sickle Cell AnemiaIn a small, prematurely terminated study of patients with pulmonary hypertension (PH) secondary to sickle cell disease, vaso-occlusive crises requiring hospitalization were more commonly reported by patients who received sildenafil citrate than by those randomized to placebo. The effectiveness and safety of sildenafil citrate in the treatment of PAH secondary to sickle cell anemia has not been established. Sildenafil citrate has vasodilatory properties, resulting in mild and transient decreases in blood pressure. Monitor blood pressure when co-administering blood pressure lowering drugs with sildenafil citrate. Pulmonary vasodilators may significantly worsen the cardiovascular status of patients with pulmonary veno-occlusive disease (PVOD).

Dose Adjustments

Should signs of pulmonary edema occur when sildenafil citrate is administered, consider the possibility of associated PVOD. The incidence of epistaxis was 13% in patients taking sildenafil citrate with PAH secondary to CTD. The incidence of epistaxis was also higher in sildenafil citrate-treated patients with a concomitant oral vitamin K antagonist (9% versus 2% in those not treated with concomitant vitamin K antagonist). The safety of sildenafil citrate is unknown in patients with bleeding disorders or active peptic ulceration. When used to treat erectile dysfunction, non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including permanent loss of vision, has been reported post-marketing in temporal association with the use of PDE-5 inhibitors, including sildenafil.

Drug Interactions

Most patients had underlying anatomic or vascular risk factors for developing NAION, including low cup to disc ratio (“crowded disc”). Should signs of pulmonary edema occur when sildenafil citrate is administered, consider the possibility of associated PVOD.

Parameter Details
Onset of Action 30-60 minutes
Peak Effect About 1 hour
Duration of Effect 4-6 hours
Factors Influencing Food intake, alcohol, metabolism

The incidence of epistaxis was 13% in patients taking sildenafil citrate with PAH secondary to CTD. The incidence of epistaxis was also higher in sildenafil citrate-treated patients with a concomitant oral vitamin K antagonist (9% versus 2% in those not treated with concomitant vitamin K antagonist). The safety of sildenafil citrate is unknown in patients with bleeding disorders or active peptic ulceration.

  • Sildenafil 20 mg can interact with nitrates used for chest pain.
  • Store tablets at room temperature, away from moisture.
  • Do not crush or split the tablets; swallow whole.
  • It is not recommended for use by women or children.
  • Known for its rapid onset, usually within 30 minutes.

When used to treat erectile dysfunction, non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including permanent loss of vision, has been reported post-marketing in temporal association with the use of PDE-5 inhibitors, including sildenafil.

Ingredient Quantity per Tablet Function
Sildenafil Citrate 20 mg Active ingredient
lactose monohydrate 50 mg Filler and binder
Microcrystalline Cellulose 10 mg Disintegrant
Magnesium Stearate 2 mg Lubricant
Cornstarch 5 mg Binder

Most patients had underlying anatomic or vascular risk factors for developing NAION, including low cup to disc ratio (“crowded disc”).

2.1 Sildenafil Tablets

Serious side effects

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