Clinical Benefits of Low-Dose Vardenafil Treatment
rufinamiderufinamide will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. rufinamide will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. selpercatinibselpercatinib increases toxicity of vardenafil by QTc interval. selpercatinib increases toxicity of vardenafil by QTc interval. Coadministration of sepiapterin with drugs affecting nitric oxide-mediated relaxation may cause additive vasodilation and further reduce blood pressure. sertralinesertraline and vardenafil both increase QTc interval. sertraline and vardenafil both increase QTc interval. Consider predose and post-colonoscopy ECGs in patients at increased risk of serious cardiac arrhythmias. sodium sulfate/?magnesium sulfate/potassium chloride increases toxicity of vardenafil by QTc interval. sodium sulfate/potassium sulfate/magnesium sulfate increases toxicity of vardenafil by QTc interval. solifenacinsolifenacin and vardenafil both increase QTc interval. solifenacin and vardenafil both increase QTc interval. sorafenibsorafenib and vardenafil both increase QTc interval. Monitor CYP3A4 substrates coadministered with stiripentol for increased or decreased effects. sunitinibsunitinib and vardenafil both increase QTc interval. sunitinib and vardenafil both increase QTc interval. suzetriginesuzetrigine decreases levels super tadapox 100mg of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
- Vardenafil 5 mg has a success rate of approximately 70-80% in clinical studies.
- It is often prescribed as a first-line treatment for ED.
- The tablet should be taken approximately 60 minutes before sex.
- Patients should avoid alcohol to reduce adverse effects.
- Exercise and dietary modifications can improve treatment outcomes.
- Patients should avoid grapefruit juice which can alter drug levels.
- Notify your doctor if erections last longer than 4 hours.
- Side effects may diminish over time with continued use.
- Use caution when operating machinery or driving.
- The medication is effective for men with diabetes-related ED.
- It is not approved for use in women or children.
- Always prioritize a doctor’s guidance regarding dosage and safety.
Monitor patients for loss of therapeutic effect of sensitive CYP3A substrates with narrow therapeutic indexes when coadministered with suzetrigine. Consider modifying dose of sensitive substrate according to prescribing recommendations. suzetrigine decreases levels of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Concomitant use may increase the risk of QTc interval prolongation. If concomitant use is unavoidable, adjust the frequency of ECG and electrolyte monitoring. tecovirimattecovirimat will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Warnings & Precautions
rufinamiderufinamide will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. rufinamide will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. selpercatinibselpercatinib increases toxicity of vardenafil by QTc interval. selpercatinib increases toxicity of vardenafil by QTc interval. Coadministration of sepiapterin with drugs affecting nitric oxide-mediated relaxation may cause additive vasodilation and further reduce blood pressure.
Erectile Dysfunction
sertralinesertraline and vardenafil both increase QTc interval. sertraline and vardenafil both increase QTc interval. Consider predose and post-colonoscopy ECGs in patients at increased risk of serious cardiac arrhythmias. sodium sulfate/?magnesium sulfate/potassium chloride increases toxicity of vardenafil by QTc interval. sodium sulfate/potassium sulfate/magnesium sulfate increases toxicity of vardenafil by QTc interval.
Other Interactions
solifenacinsolifenacin and vardenafil both increase QTc interval. solifenacin and vardenafil both increase QTc interval. sorafenibsorafenib and vardenafil both increase QTc interval. Monitor CYP3A4 substrates coadministered with stiripentol for increased or decreased effects. sunitinibsunitinib and vardenafil both increase QTc interval. Monitor sensitive CYP3A4 substrates for effectiveness if coadministered. tecovirimat will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. tetracyclinetetracycline will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors tetracycline will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
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Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors tobramycin inhaledtobramycin inhaled and buy tadalista 60 vardenafil both increase nephrotoxicity and/or ototoxicity.
Advancing Effective Research Policy
anastrozole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. azithromycinazithromycin increases toxicity of vardenafil by QTc interval. azithromycin increases toxicity of vardenafil by QTc interval. carvedilolvardenafil increases effects of carvedilol by pharmacodynamic synergism. vardenafil increases effects of carvedilol by pharmacodynamic synergism.
Dosage Modifications
chloroquinechloroquine increases toxicity of vardenafil by QTc interval. chloroquine increases toxicity of vardenafil by QTc interval. cyclophosphamidecyclophosphamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. cyclophosphamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. drospirenonedrospirenone will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
How effective are vardenafil and tadalafil for erectile dysfunction?
drospirenone will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. labetalolvardenafil increases effects of labetalol by pharmacodynamic synergism. vardenafil increases effects of labetalol by pharmacodynamic synergism. Possible additive vasorelaxation, leading to low blood pressure. Soluble guanylate cyclase (sGC) stimulators (eg, riociguat); concomitant use can cause hypotension Coadministration with nitrates (either regularly and/or intermittently) and nitric oxide donors Consistent with the effects of PDE5 inhibition on the nitric oxide/cyclic guanosine monophosphate pathway, PDE5 inhibitors may potentiate the hypotensive effects of nitrates A suitable time interval following PDE5 dosing for the safe administration of nitrates or nitric oxide donors has not been determined Use with caution in anatomical deformation of the penis (such as angulation, cavernosal fibrosis, or Peyronie’s disease), cardiovascular disease, left ventricular outflow obstruction, bleeding disorders, active peptic ulcer disease, liver disease, renal impairment, multidrug antihypertensive regimens, retinitis pigmentosa, concomitant use of CYP3A4 inhibitors, patients who have conditions that may predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia) There have been rare reports of prolonged erections >4 hr and priapism (painful erections greater than 6 hours in duration) for this class of compounds, including vardenafil; in the event that an erection persists >4 hours, the patient should seek immediate medical assistance; if priapism is not treated immediately, penile tissue damage and permanent loss of potency may result Physicians should consider the cardiovascular status of their patients; there is a degree of cardiac risk associated with sexual activity; treatment for erectile dysfunction, should not be used in men for whom sexual activity is not recommended because of their underlying cardiovascular status Patients with left ventricular outflow obstruction, (for example, aortic stenosis and idiopathic hypertrophic subaortic stenosis) can be sensitive to the action of vasodilators including PDE5 inhibitors Until further information available, use is not recommended in unstable angina; hypotension (resting systolic blood pressure of <90 mmHg); uncontrolled hypertension (>170/110 mmHg); recent history of stroke, life-threatening arrhythmia, or myocardial infarction (within last 6 months); severe cardiac failure Consider counseling patients about protective measures necessary to guard against sexually transmitted diseases, including Human Immunodeficiency Virus (HIV); drug offers no protection against sexually transmitted diseases Patients taking Class 1A (eg, quinidine, procainamide) or Class III (eg, amiodarone, sotalol) antiarrhythmic medications or those with congenital QT prolongation, should avoid using drug Safety and efficacy of drug used in combination with other treatments for erectile dysfunction not studied; use of such combinations not recommended Vision loss may occur rarely and may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION); patient should seek medical assistance for sudden loss in one or both eyes; patients who have already experienced NAION are at increased risk of recurrence; use is not recommended in patients with known degenerative retinal disorders May increase risk of rare sudden vision loss attributed to nonarteritic ischemic optic neuropathy; if vision problems arise, discontinue, and contact physician The drug has systemic vasodilatory properties that resulted in transient decreases in supine blood pressure in healthy volunteers (mean maximum decrease of 7 mmHg systolic and 8 mmHg diastolic); while this normally would be expected to be of little consequence in most patients, physicians should carefully consider whether their patients with underlying cardiovascular disease could be affected adversely by such vasodilatory effects Physicians should advise patients to stop taking all PDE5 inhibitors, and seek prompt medical attention in event of sudden decrease or loss of hearing; these events, which may be accompanied by tinnitus and dizziness, have been reported in temporal association to intake of PDE5 inhibitors, including vardenafil; it is not possible to determine whether these events are related directly to use of PDE5 inhibitors or to other factors CYP3A4 inhibitorsConcomitant administration with potent CYP3A4 inhibitors (eg, ritonavir, indinavir, cobicistat, ketoconazole) or moderate CYP3A4 inhibitors (eg, erythromycin) increases plasma concentrations of drug; dosage adjustment is necessary when drug is administered with certain CYP3A4 inhibitorsLong-term safety information is not available on concomitant administration of drug with HIV protease inhibitors Concomitant administration with potent CYP3A4 inhibitors (eg, ritonavir, indinavir, cobicistat, ketoconazole) or moderate CYP3A4 inhibitors (eg, erythromycin) increases plasma concentrations of drug; dosage adjustment is necessary when drug is administered with certain CYP3A4 inhibitors Long-term safety information is not available on concomitant administration of drug with HIV protease inhibitors Alpha blockersCaution advised when PDE5 inhibitors co-administered with alpha-blockers; PDE5 inhibitors, and alpha-adrenergic blocking agents are both vasodilators with blood-pressure lowering effects; when vasodilators are used in combination, an additive effect on blood pressure may be anticipated; in some patients, concomitant use of these two drug classes can lower blood pressure significantly leading to symptomatic hypotension (eg, fainting)Patients should be stable on alpha-blocker therapy prior to initiating a PDE5 inhibitor; patients who demonstrate hemodynamic instability on alpha-blocker therapy alone are at increased risk of symptomatic hypotension with concomitant use of PDE5 inhibitorsIn patients who are stable on alpha-blocker therapy, initiate PDE5 inhibitors at lowest recommended starting doseIn patients already taking optimized dose of PDE5 inhibitor, initiate alpha-blocker therapy at lowest dose; stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure in patients taking a PDE5 inhibitorSafety of combined use of other PDE5 inhibitors and alpha-blockers may be affected by other variables, including intravascular volume depletion and other anti-hypertensive drugs Caution advised when PDE5 inhibitors co-administered with alpha-blockers; PDE5 inhibitors, and alpha-adrenergic blocking agents are both vasodilators with blood-pressure lowering effects; when vasodilators are used in combination, an additive effect on blood pressure may be anticipated; in some patients, concomitant use of these two drug classes can lower blood pressure significantly leading to symptomatic hypotension (eg, fainting) Patients sho Avoid concurrent or sequential use to decrease risk for ototoxicity tobramycin inhaled and vardenafil both increase nephrotoxicity and/or ototoxicity.
How RedBox Rx can help
Avoid concurrent or sequential use to decrease risk for ototoxicity topiramatetopiramate will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. topiramate will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. valbenazinevalbenazine and vardenafil both increase QTc interval. valbenazine and vardenafil both increase QTc interval. verapamilverapamil will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Usual Adult Dose for Erectile Dysfunction
topiramate will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. valbenazinevalbenazine and vardenafil both increase QTc interval. valbenazine and vardenafil both increase QTc interval. verapamilverapamil will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors verapamil will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Related Disease Conditions
Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors Either increases effects of the other by QTc interval. voriconazolevoriconazole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors voriconazole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors vorinostatvorinostat and vardenafil both increase QTc interval. vorinostat and vardenafil both increase QTc interval.
Pregnancy and breastfeeding
zafirlukastzafirlukast will increase libido in women increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. zafirlukast will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. acetazolamideacetazolamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. acetazolamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. anastrozoleanastrozole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors verapamil will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors Either increases effects of the other by QTc interval. voriconazolevoriconazole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
| Contraindication | Explanation | Alternative suggestions |
|---|---|---|
| Use with nitrates | Can cause dangerous drop in blood pressure | Seek medical advice for ED treatments |
| Severe cardiovascular disease | Increased risk during sexual activity | Assess cardiovascular health beforehand |
| Liver impairment | Altered drug metabolism | Dose adjustment or alternative therapy |
| Retinitis pigmentosa | Potential risk linked to PDE inhibitors | Consult eye specialist |
Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors voriconazole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors vorinostatvorinostat and vardenafil both increase QTc interval.
- Vardenafil 5 mg may be less effective if taken with high-fat meals.
- Side effects like indigestion or muscle aches are possible.
- Inform your doctor about any allergic reactions experienced.
- Be cautious if you have low blood pressure or heart disease.
- It is recommended to avoid taking other ED medications concurrently.
- Regular check-ups help assess medication effectiveness.
- Discontinue use and seek help if adverse reactions occur.
- The medication can improve intimacy confidence and quality.
- Use the lowest effective dose to minimize side effects.
- Vardenafil 5 mg is generally safe when used responsibly.
- Keep out of reach of children and pets.
- Consult your healthcare provider for personalized advice.
vorinostat and vardenafil both increase QTc interval. zafirlukastzafirlukast will increase libido in women increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
- Vardenafil 5 mg is effective in treating primary and secondary ED.
- It is marketed under various brand names worldwide.
- Generic Vardenafil 5 mg is usually more affordable.
- It is not suitable for individuals with certain eye conditions.
- Possible side effects include nasal congestion or dizziness.
- Use with caution if you have kidney or liver issues.
- Consultation with a healthcare provider is essential before use.
- Vardenafil 5 mg does not provide protection from sexually transmitted infections.
- Keep medical records updated when taking this medication.
- Never share your medication with others.
- It is important to have realistic expectations about treatment.
- Follow-up appointments help monitor efficacy and safety.
zafirlukast will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. acetazolamideacetazolamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Shipping & Delivery
acetazolamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. anastrozoleanastrozole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. anastrozole will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
- Vardenafil 5 mg is not suitable for individuals taking certain heart medications.
- The medication may cause dizziness or lightheadedness in some users.
- Proper storage extends shelf life and maintains potency.
- Lifestyle factors like stress can impact treatment success.
- Avoid heavy meals before taking Vardenafil 5 mg to speed absorption.
- The medication does not work without sexual stimulation.
- Be aware of potential interactions with other prescribed drugs.
- Patients should avoid driving if feeling dizzy after taking it.
- Consult your doctor if you experience prolonged or painful erections.
- Vardenafil 5 mg has a rapid onset but variable duration.
- It is important to review medical history before starting therapy.
- Combination therapy with other ED treatments should only be under medical supervision.
azithromycinazithromycin increases toxicity of vardenafil by QTc interval. azithromycin increases toxicity of vardenafil by QTc interval. carvedilolvardenafil increases effects of carvedilol by pharmacodynamic synergism.
What other drugs will affect vardenafil?
vardenafil increases effects of carvedilol by pharmacodynamic synergism.
Side Effects
sunitinib and vardenafil both increase QTc interval. suzetriginesuzetrigine decreases levels super tadapox 100mg of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Monitor patients for loss of therapeutic effect of sensitive CYP3A substrates with narrow therapeutic indexes when coadministered with suzetrigine. Consider modifying dose of sensitive substrate according to prescribing recommendations. suzetrigine decreases levels of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Prevention & Wellness
Concomitant use may increase the risk of QTc interval prolongation. If concomitant use is unavoidable, adjust the frequency of ECG and electrolyte monitoring. tecovirimattecovirimat will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Monitor sensitive CYP3A4 substrates for effectiveness if coadministered. tecovirimat will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
Does vardenafil interact with other medicines (drug interactions)?
tetracyclinetetracycline will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors tetracycline will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Vardenafil dose may need to be reduced if coadministered with moderate or strong CYP3A4 inhibitors tobramycin inhaledtobramycin inhaled and buy tadalista 60 vardenafil both increase nephrotoxicity and/or ototoxicity. Avoid concurrent or sequential use to decrease risk for ototoxicity tobramycin inhaled and vardenafil both increase nephrotoxicity and/or ototoxicity. Avoid concurrent or sequential use to decrease risk for ototoxicity topiramatetopiramate will decrease the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. chloroquinechloroquine increases toxicity of vardenafil by QTc interval. chloroquine increases toxicity of vardenafil by QTc interval. cyclophosphamidecyclophosphamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. cyclophosphamide will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. drospirenonedrospirenone will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism.
| Parameter | Value | Notes |
|---|---|---|
| Absorption Rate | Fast | Peak plasma concentration in ~1 hour |
| Bioavailability | Approximately 15% | Due to first-pass metabolism |
| Half-Life | About 4-5 hours | Time for plasma levels to reduce by half |
| Metabolism | Primarily hepatic via CYP3A4 | Liver enzyme responsible |
drospirenone will increase the level or effect of vardenafil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. labetalolvardenafil increases effects of labetalol by pharmacodynamic synergism. vardenafil increases effects of labetalol by pharmacodynamic synergism. Possible additive vasorelaxation, leading to low blood pressure. Soluble guanylate cyclase (sGC) stimulators (eg, riociguat); concomitant use can cause hypotension Coadministration with nitrates (either regularly and/or intermittently) and nitric oxide donors Consistent with the effects of PDE5 inhibition on the nitric oxide/cyclic guanosine monophosphate pathway, PDE5 inhibitors may potentiate the hypotensive effects of nitrates A suitable time interval following PDE5 dosing for the safe administration of nitrates or nitric oxide donors has not been determined Use with caution in anatomical deformation of the penis (such as angulation, cavernosal fibrosis, or Peyronie’s disease), cardiovascular disease, left ventricular outflow obstruction, bleeding disorders, active peptic ulcer disease, liver disease, renal impairment, multidrug antihypertensive regimens, retinitis pigmentosa, concomitant use of CYP3A4 inhibitors, patients who have conditions that may predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia) There have been rare reports of prolonged erections >4 hr and priapism (painful erections greater than 6 hours in duration) for this class of compounds, including vardenafil; in the event that an erection persists >4 hours, the patient should seek immediate medical assistance; if priapism is not treated immediately, penile tissue damage and permanent loss of potency may result Physicians should consider the cardiovascular status of their patients; there is a degree of cardiac risk associated with sexual activity; treatment for erectile dysfunction, should not be used in men for whom sexual activity is not recommended because of their underlying cardiovascular status Patients with left ventricular outflow obstruction, (for example, aortic stenosis and idiopathic hypertrophic subaortic stenosis) can be sensitive to the action of vasodilators including PDE5 inhibitors Until further information available, use is not recommended in unstable angina; hypotension (resting systolic blood pressure of <90 mmHg); uncontrolled hypertension (>170/110 mmHg); recent history of stroke, life-threatening arrhythmia, or myocardial infarction (within last 6 months); severe cardiac failure Consider counseling patients about protective measures necessary to guard against sexually transmitted diseases, including Human Immunodeficiency Virus (HIV); drug offers no protection against sexually transmitted diseases Patients taking Class 1A (eg, quinidine, procainamide) or Class III (eg, amiodarone, sotalol) antiarrhythmic medications or those with congenital QT prolongation, should avoid using drug Safety and efficacy of drug used in combination with other treatments for erectile dysfunction not studied; use of such combinations not recommended Vision loss may occur rarely and may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION); patient should seek medical assistance for sudden loss in one or both eyes; patients who have already experienced NAION are at increased risk of recurrence; use is not recommended in patients with known degenerative retinal disorders May increase risk of rare sudden vision loss attributed to nonarteritic ischemic optic neuropathy; if vision problems arise, discontinue, and contact physician The drug has systemic vasodilatory properties that resulted in transient decreases in supine blood pressure in healthy volunteers (mean maximum decrease of 7 mmHg systolic and 8 mmHg diastolic); while this normally would be expected to be of little consequence in most patients, physicians should carefully consider whether their patients with underlying cardiovascular disease could be affected adversely by such vasodilatory effects Physicians should advise patients to stop taking all PDE5 inhibitors, and seek prompt medical attention in event of sudden decrease or loss of hearing; these events, which may be accompanied by tinnitus and dizziness, have been reported in temporal association to intake of PDE5 inhibitors, including vardenafil; it is not possible to determine whether these events are related directly to use of PDE5 inhibitors or to other factors CYP3A4 inhibitorsConcomitant administration with potent CYP3A4 inhibitors (eg, ritonavir, indinavir, cobicistat, ketoconazole) or moderate CYP3A4 inhibitors (eg, erythromycin) increases plasma concentrations of drug; dosage adjustment is necessary when drug is administered with certain CYP3A4 inhibitorsLong-term safety information is not available on concomitant administration of drug with HIV protease inhibitors Concomitant administration with potent CYP3A4 inhibitors (eg, ritonavir, indinavir, cobicistat, ketoconazole) or moderate CYP3A4 inhibitors (eg, erythromycin) increases plasma concentrations of drug; dosage adjustment is necessary when drug is administered with certain CYP3A4 inhibitors Long-term safety information is not available on concomitant administration of drug with HIV protease inhibitors Alpha blockersCaution advised when PDE5 inhibitors co-administered with alpha-blockers; PDE5 inhibitors, and alpha-adrenergic blocking agents are both vasodilators with blood-pressure lowering effects; when vasodilators are used in combination, an additive effect on blood pressure may be anticipated; in some patients, concomitant use of these two drug classes can lower blood pressure significantly leading to symptomatic hypotension (eg, fainting)Patients should be stable on alpha-blocker therapy prior to initiating a PDE5 inhibitor; patients who demonstrate hemodynamic instability on alpha-blocker therapy alone are at increased risk of symptomatic hypotension with concomitant use of PDE5 inhibitorsIn patients who are stable on alpha-blocker therapy, initiate PDE5 inhibitors at lowest recommended starting doseIn patients already taking optimized dose of PDE5 inhibitor, initiate alpha-blocker therapy at lowest dose; stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure in patients taking a PDE5 inhibitorSafety of combined use of other PDE5 inhibitors and alpha-blockers may be affected by other variables, including intravascular volume depletion and other anti-hypertensive drugs Caution advised when PDE5 inhibitors co-administered with alpha-blockers; PDE5 inhibitors, and alpha-adrenergic blocking agents are both vasodilators with blood-pressure lowering effects; when vasodilators are used in combination, an additive effect on blood pressure may be anticipated; in some patients, concomitant use of these two drug classes can lower blood pressure significantly leading to symptomatic hypotension (eg, fainting) Patients sho
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