Vardenafil

VARDENAFIL — vardenafil hydrochloride trihydrate tablet, orally disintegrating
Alembic Pharmaceuticals Limited

1 INDICATIONS AND USAGE

Vardenafil hydrochloride orally disintegrating tablets are indicated for the treatment of erectile dysfunction.

2 DOSAGE AND ADMINISTRATION

2.1 General

Vardenafil hydrochloride orally disintegrating tablets are available in 10 mg orally disintegrating tablets. Vardenafil hydrochloride orally disintegrating tablets are not interchangeable with vardenafil 10 mg film-coated tablets (LEVITRA). Vardenafil hydrochloride orally disintegrating tablets provide higher systemic exposure compared to vardenafil 10 mg film-coated tablets (LEVITRA) [see Clinical Pharmacology (12.3).]

Vardenafil hydrochloride orally disintegrating tablets should be taken orally, as needed, approximately 60 minutes before sexual activity. The maximum dosing frequency is one vardenafil hydrochloride orally disintegrating tablet per day. Sexual stimulation is required for a response to treatment.

Vardenafil hydrochloride orally disintegrating tablets should be placed on the tongue where it will disintegrate. The tablet should be taken without liquid. It should be taken immediately upon removal from the blister.

Those patients who require a lower or higher dose of vardenafil need to be prescribed vardenafil film-coated tablets [see Patient Counseling Information (17)].

2.2 Use with Food

Vardenafil hydrochloride orally disintegrating tablets can be taken with or without food.

2.3 Use in Special Populations

Hepatic Impairment: Do not use vardenafil hydrochloride orally disintegrating tablets in patients with moderate (Child-Pugh B) or severe (Child-Pugh C) hepatic impairment [see Warnings and Precautions (5.8) and Clinical Pharmacology (12.3)].

Renal Impairment: Do not use vardenafil hydrochloride orally disintegrating tablets in patients on renal dialysis [see Warnings and Precautions (5.9) and Clinical Pharmacology (12.3)].

2.4 Concomitant Medications

Nitrates: Concomitant use with nitrates in any form is contraindicated [see Contraindications (4.1)].

Guanylate Cyclase (GC) Stimulators, such as riociguat: Concomitant use is contraindicated [see Contraindications (4.2)].

CYP3A4 Inhibitors: Do not use vardenafil hydrochloride orally disintegrating tablets with potent or moderate CYP3A4 inhibitors such as ketoconazole, itraconazole, ritonavir, indinavir, saquinavir, atazanavir, clarithromycin and erythromycin [see Warnings and Precautions (5.2) and Drug Interactions (7.2)].

Alpha-Blockers: In those patients who are stable on alpha-blocker therapy, PDE5 inhibitors should be initiated at the lowest recommended starting dose. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure in patients taking a phosphodiesterase (PDE5) inhibitor including vardenafil. In patients taking alpha-blockers, do not initiate vardenafil therapy with vardenafil hydrochloride orally disintegrating tablets. Lower doses of vardenafil film-coated tablets should be used as initial therapy in these patients [see Dosage and Administration (2.4)]. Patients taking alpha-blockers who have previously used vardenafil film-coated tablets may change to vardenafil hydrochloride orally disintegrating tablets at the advice of their healthcare provider [see Warnings and Precautions (5.6) and Drug Interactions (7.1).]

A time interval between dosing should be considered when vardenafil hydrochloride orally disintegrating tablets are prescribed concomitantly with alpha-blocker therapy [see Clinical Pharmacology (12.2)].

3 DOSAGE FORMS AND STRENGTHS

Vardenafil hydrochloride orally disintegrating tablets are available in 10 mg white to off white, round, biconvex, debossed with “477”.

4 CONTRAINDICATIONS

4.1 Nitrates

Administration of vardenafil hydrochloride orally disintegrating tablets with nitrates (either regularly and/or intermittently) and nitric oxide donors is contraindicated [see Clinical Pharmacology (12.2)]. Consistent with the effects of PDE5 inhibition on the nitric oxide/cyclic guanosine monophosphate pathway, PDE5 inhibitors, including vardenafil hydrochloride orally disintegrating tablets, may potentiate the hypotensive effects of nitrates. A suitable time interval following vardenafil hydrochloride orally disintegrating tablets dosing for the safe administration of nitrates or nitric oxide donors has not been determined.

4.2 Guanylate Cyclase (GC) Stimulators

Do not use vardenafil hydrochloride orally disintegrating tablets in patients who are using a GC stimulator, such as riociguat. PDE5 inhibitors, including vardenafil hydrochloride orally disintegrating tablets may potentiate the hypotensive effects of GC stimulators.

5 WARNINGS AND PRECAUTIONS

The evaluation of erectile dysfunction should include a medical assessment, a determination of potential underlying causes and the identification of appropriate treatment.

Before prescribing vardenafil hydrochloride orally disintegrating tablets, it is important to note the following:

5.1 Cardiovascular Effects

General

Physicians should consider the cardiovascular status of their patients, since there is a degree of cardiac risk associated with sexual activity. Therefore, treatment for erectile dysfunction, including vardenafil hydrochloride orally disintegrating tablets, should not be used in men for whom sexual activity is not recommended because of their underlying cardiovascular status.

There are no controlled clinical data on the safety or efficacy of vardenafil in the following patients; and therefore its use is not recommended until further information is available: 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 the last 6 months); severe cardiac failure.

Left Ventricular Outflow Obstruction

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.

Blood Pressure Effects

Vardenafil 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) [see Clinical Pharmacology (12.2)]. While this normally would be expected to be of little consequence in most patients, prior to prescribing vardenafil hydrochloride orally disintegrating tablets, physicians should carefully consider whether their patients with underlying cardiovascular disease could be affected adversely by such vasodilatory effects.

5.2 Potential for Drug Interactions with Potent or Moderate CYP3A4 Inhibitors

Concomitant administration with potent CYP3A4 inhibitors (such as ritonavir, indinavir, ketoconazole) or moderate CYP3A4 inhibitors (such as erythromycin) increases plasma concentrations of vardenafil. Do not use vardenafil hydrochloride orally disintegrating tablets in patients taking potent or moderate CYP3A4 inhibitors [see Dosage and Administration (2.4), Drug Interactions (7.2) and Patient Counseling Information (17).]

5.3 Risk of Priapism

There have been rare reports of prolonged erections greater than 4 hours and priapism (painful erections greater than 6 hours in duration) for this class of compounds, including vardenafil. In the event that an erection persists longer than 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.

Vardenafil hydrochloride orally disintegrating tablets should be used with caution by patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis, or Peyronie’s disease) or by patients who have conditions that may predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia).

5.4 Effects on the Eye

Physicians should advise patients to stop use of all phosphodiesterase type 5 (PDE5) inhibitors, including vardenafil hydrochloride orally disintegrating tablets, and seek medical attention in the event of sudden loss of vision in one or both eyes. Such an event may be a sign of nonarteritic anterior ischemic optic neuropathy (NAION), a rare condition and a cause of decreased vision, including permanent loss of vision, that has been reported rarely postmarketing in temporal association with the use of all PDE5 inhibitors. Based on published literature, the annual incidence of NAION is 2.5 to 11.8 cases per 100,000 in males aged ≥50.
An observational case-crossover study evaluated the risk of NAION when PDE5 inhibitor use, as a class, occurred immediately before NAION onset (within 5 half-lives), compared to PDE5 inhibitor use in a prior time period. The results suggest an approximate 2-fold increase in the risk of NAION, with a risk estimate of 2.15 (95% CI 1.06, 4.34). A similar study reported a consistent result, with a risk estimate of 2.27 (95% CI 0.99, 5.2). Other risk factors for NAION, such as the presence of “crowded” optic disc, may have contributed to the occurrence of NAION in these studies.

Neither the rare postmarketing reports, nor the association of PDE5 inhibitor use and NAION in the observational studies, substantiate a causal relationship between PDE5 inhibitor use and NAION [see Adverse Reactions (6.2)].

Physicians should consider whether their patients with underlying NAION risk factors could be adversely affected by use of PDE5 inhibitors. Individuals who have already experienced NAION are at increased risk of NAION recurrence. Therefore, PDE5 inhibitors, including vardenafil hydrochloride orally disintegrating tablets, should be used with caution in these patients and only when the anticipated benefits outweigh the risks. Individuals with “crowded” optic disc are also considered at greater risk for NAION compared to the general population, however, evidence is insufficient to support screening of prospective users of PDE5 inhibitors, including vardenafil hydrochloride orally disintegrating tablets, for this uncommon condition.

Vardenafil hydrochloride orally disintegrating tablets have not been evaluated in patients with known hereditary degenerative retinal disorders, including retinitis pigmentosa, therefore its use is not recommended until further information is available in those patients.

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