Nebivolol

12.1 Mechanism of Action The mechanism of action of the antihypertensive response of nebivolol has not been definitively established. Possible factors that may be involved include: (1) decreased heart rate, (2) decreased myocardial contractility, (3) diminution of tonic sympathetic outflow to the periphery from cerebral vasomotor centers,(4) suppression of renin activity and (5) vasodilation and decreased peripheral vascular resistance.

1 INDICATIONS AND USAGE Nebivolol is a beta-adrenergic blocking agent indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions.( 1.1 ) 1.1 Hypertension Nebivolol tablets are indicated for the treatment of hypertension, to lower blood pressure [ see Clinical Studies ( 14.1 ) ]. Nebivolol may be used alone or in combination with other antihypertensive agents [ see Drug Interactions ( 7 )]. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes, including the class to which this drug principally belongs. There are no controlled trials demonstrating risk reduction with nebivolol. Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy, smoking cessation, exercise, and limited sodium intake. Many patients will require more than one drug to achieve blood pressure goals. For specific advice on goals and management, see published guidelines, such as those of the National High Blood Pressure Education Program's Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC). Numerous antihypertensive drugs, from a variety of pharmacologic classes and with different mechanisms of action, have been shown in randomized controlled trials to reduce cardiovascular morbidity and mortality, and it can be concluded that it is blood pressure reduction, and not some other pharmacologic property of the drugs, that is largely responsible for those benefits. The largest and most consistent cardiovascular outcome benefit has been a reduction in the risk of stroke, but reductions in myocard

2 DOSAGE AND ADMINISTRATION Can be taken with and without food. Individualize to the needs of the patient and monitor during up-titration. ( 2 ) Hypertension: Most patients start at 5 mg once daily. Dose can be increased at 2-week intervals up to 40 mg. ( 2.1 ) 2.1 Hypertension The dose of nebivolol tablets must be individualized to the needs of the patient. For most patients, the recommended starting dose is 5 mg once daily, with or without food, as monotherapy or in combination with other agents. For patients requiring further reduction in blood pressure, the dose can be increased at 2-week intervals up to 40 mg. A more frequent dosing regimen is unlikely to be beneficial. Renal Impairment In patients with severe renal impairment (ClCr less than 30 mL/min) the recommended initial dose is 2.5 mg once daily; titrate up slowly if needed. Nebivolol tablets have not been studied in patients receiving dialysis [ see Clinical Pharmacology ( 12.4 ) ]. Hepatic Impairment In patients with moderate hepatic impairment, the recommended initial dose is 2.5 mg once daily; titrate up slowly if needed. Nebivolol tablets have not been studied in patients with severe hepatic impairment and Therefore it is not recommended in that population [ see Clinical Pharmacology ( 12.4 ) ]. 2.2 Subpopulations Geriatric Patients It is not necessary to adjust the dose in the elderly [ see use in Specific Populations ( 8.5 ) ]. CYP2D6 Polymorphism No dose adjustments are necessary for patients who are CYP2D6 poor metabolizers. The clinical effect and safety profile observed in poor metabolizers were similar to those of extensive metabolizers [ see Clinical Pharmacology ( 12.3 ) ].

6 ADVERSE REACTIONS Most common adverse reactions ( 6.1 ): Headache, fatigue To report SUSPECTED ADVERSE REACTIONS, contact Modavar Pharmaceuticals LLC at 1-800-688-4697, or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Studies Experience Nebivolol tablets have been evaluated for safety in patients with hypertension and in patients with heart failure. The observed adverse reaction profile was consistent with the pharmacology of the drug and the health status of the patients in the clinical trials. Adverse reactions reported for each of these patient populations are provided below. Excluded are adverse reactions considered too general to be informative and those not reasonably associated with the use of the drug because they were associated with the condition being treated or are very common in the treated population. The data described below reflect worldwide clinical trial exposure to nebivolol tablets in 6,545 patients, including 5,038 patients treated for hypertension and the remaining 1,507 subjects treated for other cardiovascular diseases. Doses ranged from 0.5 mg to 40 mg. Patients received nebivolol tablets for up to 24 months, with over 1,900 patients treated for at least 6 months, and approximately 1,300 patients for more than one year. HYPERTENSION : In placebo-controlled clinical trials comparing nebivolol tablets with placebo, discontinuation of therapy due to adverse reactions was reported in 2.8% of patients treated with nebivolol and 2.2% of patients given placebo. The most common adverse reactions that led to discontinuation of nebivolol tablets were headache (0.4%), nausea (0.2%) and bradycardia (0.2%). Table 1 lists treatment-emergent adverse reactions that were reported in three 12-week, placebo- controlled monotherapy trials involving 1,597 hypertensive patients treated with either 5 mg, 10 mg, or 20 to 40 mg of nebivolol and 205 patients given placebo and for which the rate of occurrence was at least 1% of patients treated with nebivolol and greater than the rate for those treated with placebo in at least one dose group. Table 1. Treatment-Emergent Adverse Reactions with an Incidence (over 6 weeks) ≥ 1% in Nebivolol Tablets-Treated Patients and at a Higher Frequency than Placebo-Treated Patients System Organ Class – Placebo Nebivolol Nebivolol Nebivolol Preferred Term 5 mg 10 mg 20 to 40 mg (n = 205) (n = 459) (n = 461) (n = 677) (%) (%) (%) (%) Cardiac Disorders Bradycardia 0 0 0 1 Gastrointestinal Disorders Diarrhea 2 2 2 3 Nausea 0 1 3 2 General Disorders Fatigue 1 2 2 5 Chest pain 0 0 1 1 Peripheral edema 0 1 1 1 Nervous System Disorders Headache 6 9 6 7 Dizziness 2 2 3 4 Psychiatric Disorders Insomnia 0 1 1 1 Respiratory Disorders Dyspnea 0 0 1 1 Skin and subcutaneous Tissue Disorders Rash 0 0 1 1 Listed below are other reported adverse reactions with an incidence of at least 1% in the more than 4,300 patients treated with nebivolol tablets in controlled or open-label trials except for those already appearing in Table 1 , terms too general to be informative, minor symptoms, or adverse reactions unlikely to be attributable to drug because they are common in the population. These adverse reactions were in most cases observed at a similar frequency in placebo-treated patients in the controlled studies. Body as a Whole : asthenia. Gastrointestinal System Disorders : abdominal pain Metabolic and Nutritional Disorders : hypercholesterolemia Nervous System Disorders : paraesthesia 6.2 Laboratory Abnormalities In controlled monotherapy trials of hypertensive patients, nebivolol was associated with an increase in BUN, uric acid, triglycerides and a decrease in HDL cholesterol and platelet count. 6.3 Postmarketing Experience The following adverse reactions have been identified from spontaneous reports of nebivolol tablets received worldwide and have not been listed elsewhere. These adverse reactions have been chosen for inclusion due to a combination of seriousness, frequency of reporting or potential causal connection to nebivolol tablets. Adverse reactions common in the population have generally been omitted. Because these adverse reactions were reported voluntarily from a population of uncertain size, it is not possible to estimate their frequency or establish a causal relationship to nebivolol exposure: abnormal hepatic function (including increased AST, ALT and bilirubin), acute pulmonary edema, acute renal failure, atrioventricular block (both second and third degree), bronchospasm, erectile dysfunction, hypersensitivity (including urticaria, allergic vasculitis and rare reports of angioedema), hypotension, myocardial infarction, pruritus, psoriasis, Raynaud's phenomenon, peripheral ischemia/claudication, somnolence, syncope, thrombocytopenia, various rashes and skin disorders, vertigo, and vomiting.

7 DRUG INTERACTIONS CYP2D6 enzyme inhibitors may increase nebivolol levels ( 7.1 ) Reserpine or clonidine may produce excessive reduction of sympathetic activity. ( 7.2 ) Both digitalis glycosides and β-blockers slow atrioventricular conduction and decrease heart rate. Concomitant use can increase the risk of bradycardia. ( 7.3 ) Verapamil- or diltiazem-type calcium channel blockers may cause excessive reductions in heart rate, blood pressure, and cardiac contractility. ( 7.4 ) 7.1 CYP2D6 Inhibitors Use caution when nebivolol is co-administered with CYP2D6 inhibitors (quinidine, propafenone, fluoxetine, paroxetine, etc.) [ see Clinical Pharmacology ( 12.5 ) ]. 7.2 Hypotensive Agents Do not use nebivolol tablets with other β-blockers. Closely monitor patients receiving catecholamine-depleting drugs, such as reserpine or guanethidine, because the added β-blocking action of nebivolol may produce excessive reduction of sympathetic activity. In patients who are receiving nebivolol and clonidine, discontinue nebivolol tablets for several days before the gradual tapering of clonidine. 7.3 Digitalis Glycosides Both digitalis glycosides and β-blockers slow atrioventricular conduction and decrease heart rate. Concomitant use can increase the risk of bradycardia. 7.4 Calcium Channel Blockers Nebivolol can exacerbate the effects of myocardial depressants or inhibitors of AV conduction, such as certain calcium antagonists (particularly of the phenylalkylamine [verapamil] and benzothiazepine [diltiazem] classes), or antiarrhythmic agents, such as disopyramide.