Levomilnacipran

12.1 Mechanism of Action The exact mechanism of the antidepressant action of levomilnacipran is unknown, but is thought to be related to the potentiation of serotonin and norepinephrine in the central nervous system, through inhibition of reuptake at serotonin and norepinephrine transporters. Non-clinical studies have shown that levomilnacipran is a potent and selective serotonin and norepinephrine reuptake inhibitor (SNRI).

1 INDICATIONS AND USAGE FETZIMA ® is indicated for the treatment of major depressive disorder (MDD) in adults [see Clinical Studies ( 14 )]. Limitation of Use: FETZIMA is not approved for the management of fibromyalgia. The efficacy and safety of FETZIMA for the management of fibromyalgia have not been established. FETZIMA is a serotonin and norepinephrine reuptake inhibitor (SNRI) indicated for the treatment of Major Depressive Disorder (MDD) in adults ( 1 ). Limitation of Use : FETZIMA is not approved for the management of fibromyalgia. The efficacy and safety of FETZIMA for the management of fibromyalgia have not been established ( 1 ).

2 DOSAGE AND ADMINISTRATION Recommended dosage: 40 mg to 120 mg once daily with or without food ( 2.1 ). Initial dosage is 20 mg once daily for 2 days and then increase to 40 mg once daily ( 2.1 ). Based on clinical response and tolerability, increase dose in increments of 40 mg at intervals of 2 or more days ( 2.1 ). The maximum recommended dosage is 120 mg once daily ( 2.1 ). Take capsules whole; do not open, chew or crush ( 2.1 ) Renal impairment ( 2.3 ) : ○ Severe renal impairment: Maximum recommended dosage is 40 mg once daily. ○ Moderate renal impairment: Maximum recommended dosage is 80 mg once daily. Discontinuation : Reduce dose gradually whenever possible ( 2.4 ) 2.1 Recommended Dosage The recommended dosage range for FETZIMA is 40 mg to 120 mg once daily, with or without food. FETZIMA should be initiated at 20 mg once daily for 2 days and then increased to 40 mg once daily. Based on clinical response and tolerability, FETZIMA may be increased in increments of 40 mg at intervals of 2 or more days. The maximum recommended dosage is 120 mg once daily. Take FETZIMA at approximately the same time each day. Swallow FETZIMA whole; do not open, chew, or crush the capsule. 2.2 Screen for Bipolar Disorder Prior to Starting FETZIMA Prior to initiating treatment with FETZIMA or another antidepressant, screen patients for a personal or family history of bipolar disorder, mania, or hypomania [see Warnings and Precautions ( 5.8 ) ] . 2. 3 Dosage Recommendations for Patients with Renal Impairment End stage renal disease (ESRD): FETZIMA is not recommended; Severe renal impairment (creatinine clearance of 15 to 29 mL/min), the dosage should not exceed 40 mg once daily; Moderate renal impairment (creatinine clearance of 30 to 59 mL/min), the dosage should not exceed 80 mg once daily; Mild renal impairment (creatinine clearance of 60 to 89 mL/min): no dosage adjustment recommended [see Use in Specific Populations ( 8.7 )]. 2.4 Discontinuing Treatment with FETZIMA Discontinuation symptoms have been reported with discontinuation of serotonergic drugs such as FETZIMA. Gradual dose reduction is recommended, instead of abrupt discontinuation, whenever possible. Monitor patients for these symptoms when discontinuing FETZIMA. If intolerable symptoms occur following a dose decrease or upon discontinuation of treatment, consider resuming the previously prescribed dose and decreasing the dose at a more gradual rate [see Warnings and Precautions ( 5.10 )] . 2.5 Switching a Patient To or From a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders At least 14 days must elapse between discontinuation of an MAOI intended to treat psychiatric disorders and initiation of therapy with FETZIMA. Conversely, at least 7 days should be allowed after stopping FETZIMA before starting an MAOI antidepressant [see Contraindications ( 4 )] . 2.6 Dosage Recommendations for Use with Strong CYP3A4 Inhibitors The maximum recommended dosage of FETZIMA should not exceed 80 mg once daily when used with strong CYP3A4 inhibitors [ s ee Drug Interactions ( 7.1 )] .

6 ADVERSE REACTIONS The following adverse reactions are discussed in greater detail in other sections of the label. Hypersensitivity [see Contraindications ( 4 )] Suicidal Thoughts and Behaviors in Adolescents and Young Adults [see Warnings and Precautions ( 5.1 )] Serotonin Syndrome [see Warnings and Precautions ( 5.2 )] Elevated Blood Pressure [see Warnings and Precautions ( 5.3 )] Elevated Heart Rate [see Warnings and Precautions ( 5.4 )] Increased Risk of Bleeding [see Warnings and Precautions ( 5.5 )] Angle Closure Glaucoma [see Warnings and Precautions ( 5.6 )] Urinary Hesitation or Retention [see Warnings and Precautions ( 5.7 )] Activation of Mania/Hypomania [see Warnings and Precautions ( 5.8 )] Seizure [see Warnings and Precautions ( 5.9 )] Discontinuation Syndrome [see Warnings and Precautions ( 5.10 )] Hyponatremia [see Warnings and Precautions ( 5.11 )] Sexual Dysfunction [see Warnings and Precautions ( 5.12 )] The most common adverse reactions (incidence ≥ 5% and at least twice the rate of placebo) are: nausea, constipation, hyperhidrosis, heart rate increase, erectile dysfunction, ejaculation disorder, tachycardia, vomiting, and palpitations ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact AbbVie at 1-800-678-1605 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Studies Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in clinical practice. Patient e xposure The safety of FETZIMA was evaluated in 3,317 patients (18 to 78 years of age) diagnosed with MDD who participated in clinical studies, representing 1,186 patient-years of exposure. Among the 3,317 FETZIMA-treated patients, 1,583 were exposed to FETZIMA in short-term, placebo-controlled studies. There were 825 patients who continued from short-term studies into a one-year, open-label extension study. Of the 3,317 patients exposed to at least one dose of FETZIMA, 895 patients were exposed to FETZIMA for at least 6 months and 367 were exposed for one year. In these studies, FETZIMA was given at doses ranging from 40 mg to 120 mg once daily and was given without regard to food. Adverse r eacti ons r eported as r easons for discontinuation of t reatment In the short-term placebo-controlled pre-marketing studies for MDD, 9% of the 1,583 patients who received FETZIMA (40 mg to 120 mg) discontinued treatment due to an adverse reaction, compared with 3% of the 1,040 placebo-treated patients in those studies. The most common adverse reaction leading to discontinuation in at least 1% of the FETZIMA-treated patients in the short-term placebo-controlled studies was nausea (1.5%). Common a dverse r eactions in p lacebo- c ontrolled MDD s tudies The most commonly observed adverse reactions in FETZIMA-treated MDD patients in placebo-controlled studies (incidence ≥ 5% and at least twice the rate of placebo) were: nausea, constipation, hyperhidrosis, heart rate increased, erectile dysfunction, ejaculation disorder, tachycardia, vomiting, and palpitations. Table 3 shows the incidence of adverse reactions that occurred in ≥ 2% of FETZIMA-treated MDD patients and at least twice the rate of placebo in the placebo-controlled studies. Table 3 Adverse Reactions Occurring in ≥ 2% of FETZIMA-treated Patients and at Least Twice the rate of Placebo-treated Patients in Pooled MDD Studies System Organ Class Preferred Term Placebo (N =1040) % FETZIMA 40 mg to 120 mg per day (N = 1583) % Gastrointestinal disorders Nausea 6 17 Constipation 3 9 Vomiting 1 5 Cardiac disorders Tachycardia a 2 6 Palpitations 1 5 Reproductive system and breast disorders b Erectile dysfunction c 1 6 Testicular pain d <1 4 Ejaculation disorder e <1 5 Investigations Heart rate increased f 1 6 Blood pressure increased g 1 3 Renal and urinary disorders Urinary hesitation 0 4 Skin and s ubcutaneous t issue d isorders Hyperhidrosis 2 9 Rash h 0 2 Vascular disorders Hot flush 1 3 Hypotension i 1 3 Hypertension j 1 3 Metabolism and nutrition disorders Decreased appetite 1 3 a Tachycardia also includes: sinus tachycardia and postural orthostatic tachycardia syndrome b Percentage is relative to the number of patients in the associated demographic sex category. Fewer than 2% of FETZIMA-treated MDD female patients in placebo-controlled clinical studies reported adverse events related to sexual function. c Erectile dysfunction includes: erectile dysfunction, organic erectile dysfunction, and psychogenic erectile dysfunction d Testicular pain includes: testicular pain, epididymitis, and seminal vesiculitis e Ejaculation disorder includes: ejaculation disorder, ejaculation delayed, ejaculation failure, and premature ejaculation f Heart rate increased also includes: orthostatic heart rate response increased g Blood pressure increased also includes: blood pressure systolic increase

7 DRUG INTERACTIONS Strong CYP3A4 inhibitors : Maximum recommended dosage is 80 mg once daily ( 7 ). 7.1 Drugs Having Clinically Important Interactions with FETZIMA Table 5 includes clinically important drug interactions with FETZIMA. Table 5: Clinically Important Drug Interactions with FETZIMA Monoamine Oxidase Inhibitors (MAOIs) Clinical Impact: Concomitant use of SSRIs and SNRIs including FETZIMA with MAOIs increases the risk of serotonin syndrome. Intervention: Concomitant use of FETZIMA is contraindicated: With an MAOI intended to treat psychiatric disorders or within 7 days of stopping treatment with FETZIMA. Within 14 days of stopping an MAOI intended to treat psychiatric disorders In a patient who is being treated with linezolid or intravenous methylene blue [see Dosage and Administration ( 2.5 , 2.6 ), Contraindications ( 4 ), and Warnings and Precautions ( 5.2 )] . Examples: selegiline, tranylcypromine, isocarboxazid, phenelzine, linezolid, methylene blue Other Serotonergic Drugs Clinical Impact: Concomitant use of FETZIMA with other serotonergic drugs increases the risk of serotonin syndrome. Intervention: Monitor for symptoms of serotonin syndrome when FETZIMA is used concomitantly with other drugs that may affect the serotonergic neurotransmitter systems. If serotonin syndrome occurs, immediately discontinue FETZIMA and/or concomitant serotonergic drugs [ see Dosage and Administration ( 2.5 , 2.6 ) , Contraindications ( 4 ) , and Warnings and Precautions ( 5.2 ) ] . Examples: other SNRIs, SSRIs, triptans, tricyclic antidepressants, opioids, lithium, buspirone, amphetamines, tryptophan, and St. John's Wort Drugs that Interfere with Hemostasis Clinical Impact: Concomitant use of FETZIMA with an antiplatelet or anticoagulant drug may potentiate the risk of bleeding. This may be due to the effect of FETZIMA on the release of serotonin by platelets. Intervention: Closely monitor for bleeding for patients receiving an antiplatelet or anticoagulant drug when FETZIMA is initiated or discontinued [see Warnings and Precautions ( 5.5 )] . Examples: NSAIDs, aspirin, and warfarin Strong CYP3A4 Inhibitors Clinical Impact: Concomitant use of FETZIMA with strong CYP3A4 inhibitors increases levomilnacipran exposure [see Pharmacokinetics ( 12.3 )] . Intervention: The dose of FETZIMA should not exceed 80 mg once daily when used with strong CYP3A4 inhibitors [see Dosage and Administration ( 2.6 ). Examples: Ketoconazole, itraconazole, clarithromycin Alcohol Clinical Impact: Concomitant use of FETZIMA and alcohol may result in accelerated release of levomilnacipran. Intervention: Avoid concomitant use of FETZIMA and alcohol [see Clinical Pharmacology ( 12.3 )] .