Milnacipran

1 INDICATIONS AND USAGE SAVELLA is indicated for the management of fibromyalgia. SAVELLA is not approved for use in pediatric patients [see Use in Specific Populations ( 8.4 )] . SAVELLA ® is a selective serotonin and norepinephrine reuptake inhibitor (SNRI) indicated for the management of fibromyalgia ( 1 ). SAVELLA is not approved for use in pediatric patients ( 1 ).

12.1 Mechanism of Action The exact mechanism of the central pain inhibitory action of milnacipran and its ability to improve the symptoms of fibromyalgia in humans are unknown. Preclinical studies have shown that milnacipran is a potent inhibitor of neuronal norepinephrine and serotonin reuptake; milnacipran inhibits norepinephrine uptake with approximately 3-fold higher potency in vitro than serotonin without directly affecting the uptake of dopamine or other neurotransmitters. Milnacipran has no significant affinity for serotonergic (5-HT1-7), α- and β-adrenergic, muscarinic (M1-5), histamine (H1-4), dopamine (D1-5), opiate, benzodiazepine, and γ-aminobutyric acid (GABA) receptors in vitro. Pharmacologic activity at these receptors is hypothesized to be associated with the various anticholinergic, sedative, and cardiovascular effects seen with other psychotropic drugs. Milnacipran has no significant affinity for Ca++, K+, Na+ and Cl– channels and does not inhibit the activity of human monoamine oxidases (MAO-A and MAO-B) or acetylcholinesterase.

2 DOSAGE AND ADMINISTRATION SAVELLA is given orally with or without food. Taking SAVELLA with food may improve the tolerability of the drug. Administer SAVELLA in two divided doses per day ( 2.1 ). Based on efficacy and tolerability, dosing may be titrated according to the following schedule ( 2.1 ): Day 1: 12.5 mg once Days 2-3: 25 mg/day (12.5 mg twice daily) Days 4-7: 50 mg/day (25 mg twice daily) After Day 7: 100 mg/day (50 mg twice daily) Recommended dose is 100 mg/day ( 2.1 ). May be increased to 200 mg/day based on individual patient response ( 2.1 ). Adjust dose in patients with severe renal impairment ( 2.2 ). 2.1 Recommended Dosing The recommended dose of SAVELLA is 100 mg/day (50 mg twice daily). Based on efficacy and tolerability dosing may be titrated according to the following schedule: Day 1: 12.5 mg once Days 2-3: 25 mg/day (12.5 mg twice daily) Days 4-7: 50 mg/day (25 mg twice daily) After Day 7: 100 mg/day (50 mg twice daily) Based on individual patient response, the dose may be increased to 200 mg/day (100 mg twice daily). Doses above 200 mg/day have not been studied. Taper SAVELLA and do not abruptly discontinue after extended use [see Dosage and Administration ( 2.4 ) , Warnings and Precautions ( 5.7 )] . 2.2 Patients with Renal Insufficiency No dosage adjustment is necessary in patients with mild renal impairment. Use SAVELLA with caution in patients with moderate renal impairment. For patients with severe renal impairment (indicated by an estimated creatinine clearance of 5-29 mL/min), reduce the maintenance dose by 50% to 50 mg/day (25 mg twice daily). Based on individual patient response, the dose may be increased to 100 mg/day (50 mg twice daily). SAVELLA is not recommended for patients with end-stage renal disease. 2.3 Patients with Hepatic Insufficiency No dosage adjustment is necessary for patients with hepatic impairment. As with any drug, exercise caution in patients with severe hepatic impairment. 2.4 Discontinuing SAVELLA Withdrawal symptoms have been observed in clinical trials following discontinuation of milnacipran, as with other serotonin and norepinephrine re-uptake inhibitors (SNRIs) and selective serotonin re-uptake inhibitors (SSRIs). Monitor patients for these symptoms when discontinuing treatment. Taper SAVELLA and do not abruptly discontinue after extended use [see Warnings and Precautions ( 5.7 )] . 2.5 Switching a P atient to or from a Monoamine Oxidase Inhibitor (MAOI) Intended to Treat Psychiatric Disorders At least 14 days should elapse between discontinuation of a MAOI intended to treat psychiatric disorders and initiation of therapy with SAVELLA. Conversely, allow at least 5 days after stopping SAVELLA before starting a MAOI intended to treat psychiatric disorders [see Contraindications ( 4.1 )] . 2.6 Use of SAVELLA with other MAOIs such as Linezolid or Methylene Blue Do not start SAVELLA in a patient being treated with linezolid or intravenous methylene blue because there is increased risk of serotonin syndrome. In a patient who requires more urgent treatment of a psychiatric condition, consider other interventions, including hospitalization [ see Contraindications ( 4.1 ) ] . In some cases, a patient already receiving SAVELLA therapy may require urgent treatment with linezolid or intravenous methylene blue. If acceptable alternatives to linezolid or intravenous methylene blue treatment are not available and the potential benefits of linezolid or intravenous methylene blue treatment are judged to outweigh the risks of serotonin syndrome in a particular patient, discontinue SAVELLA promptly, and consider administering linezolid or intravenous methylene blue. Monitor the patient for symptoms of serotonin syndrome for 5 days or until 24 hours after the last dose of linezolid or intravenous methylene blue, whichever comes first. Therapy with SAVELLA may be resumed 24 hours after the last dose of linezolid or intravenous methylene blue [ see Warnings and Precautions ( 5.2 )] . Th

6 ADVERSE REACTIONS The most frequently occurring adverse reactions (≥ 5% and greater than placebo) were nausea, headache, constipation, dizziness, insomnia, hot flush, hyperhidrosis, vomiting, palpitations, heart rate increased, dry mouth, and hypertension ( 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 Trial s 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 trials of another drug and may not reflect the rates observed in practice. Patient Exposure SAVELLA was evaluated in three double-blind placebo-controlled trials involving 2209 fibromyalgia patients (1557 patients treated with SAVELLA and 652 patients treated with placebo) for a treatment period up to 29 weeks. The stated frequencies of adverse reactions represent the proportion of individuals who experienced, at least once, a treatment-emergent adverse reaction of the type listed. A reaction was considered treatment emergent if it occurred for the first time or worsened while receiving therapy following baseline evaluation. Adverse Reactions Leading to Discontinuation In placebo-controlled trials in patients with fibromyalgia, 23% of patients treated with SAVELLA 100 mg/day, 26% of patients treated with SAVELLA 200 mg/day discontinued prematurely due to adverse reactions, compared to 12% of patients treated with placebo. The adverse reactions that led to withdrawal in ≥ 1% of patients in the SAVELLA treatment group and with an incidence rate greater than that in the placebo treatment group were nausea (milnacipran 6%, placebo 1%), palpitations (milnacipran 3%, placebo 1%), headache (milnacipran 2%, placebo 0%), constipation (milnacipran 1%, placebo 0%), heart rate increased (milnacipran 1%, placebo 0%), hyperhidrosis (milnacipran 1%, placebo 0%), vomiting (milnacipran 1%, placebo 0%), and dizziness (milnacipran 1% and placebo 0.5%). Discontinuation due to adverse reactions was generally more common among patients treated with SAVELLA 200 mg/day compared to SAVELLA 100 mg/day. Most Common Adverse Reactions in Placebo Controlled Trials In the placebo-controlled fibromyalgia patient trials, the most frequently occurring adverse reaction in clinical trials was nausea. The most common adverse reactions (incidence ≥ 5% and twice placebo) in patients treated with SAVELLA were constipation, hot flush, hyperhidrosis, vomiting, palpitations, heart rate increased, dry mouth, and hypertension. Table 4 lists all adverse reactions that occurred in at least 2% of patients treated with SAVELLA at either 100 or 200 mg/day and at an incidence greater than that of placebo. Table 4: Treatment-Emergent Adverse Reaction Incidence in Placebo Controlled Trials in Fibromyalgia Patients (Events Occurring in at Least 2% of All SAVELLA-Treated Patients and Occurring More Frequently in Either SAVELLA Treatment Group Than in the Placebo Treatment Group) System Organ Class– Preferred Term SAVELLA 100 mg/day (n = 623) % SAVELLA 200 mg/day (n = 934) % All SAVELLA (n = 1557) % Placebo (n = 652) % Cardiac Disorders Palpitations 8 7 7 2 Tachycardia 3 2 2 1 Eye Disorders Vision blurred 1 2 2 1 Gastrointestinal Disorders Nausea 35 39 37 20 Constipation 16 15 16 4 Vomiting 6 7 7 2 Dry mouth 5 5 5 2 Abdominal pain 3 3 3 2 General Disorders Chest pain 3 2 2 2 Chills 1 2 2 0 Chest discomfort 2 1 1 1 Infections Upper respiratory tract infection 7 6 6 6 Investigations Heart rate increased 5 6 6 1 Blood pressure increased 3 3 3 1 Metabolism and Nutrition Disorders Decreased appetite 1 2 2 0 Nervous System Disorders Headache 19 17 18 14 Dizziness 11 10 10 6 Migraine 6 4 5 3 Paresthesia 2 3 2 2 Tremor 2 2 2 1 Hypoesthesia 1 2 1 1 Tension headache 2 1 1 1 Psychiatric Disorders Insomnia 12 12 12 10 Anxiety 5 3 4 4 Respiratory Disorders Dyspnea 2 2 2 1 Skin Disorders Hyperhidr

5 WARNINGS AND PRECAUTIONS Suicidality : Monitor for worsening of depressive symptoms and suicide risk ( 5.1 ). Serotonin Syndrome : Increased risk when co-administered with other serotonergic agents, but also when taken alone. If it occurs, discontinue SAVELLA and any other serotonergic agents, and initiate supportive treatment ( 5.2 ). Elevated B lood P ressure and H eart R ate : SAVELLA may increase blood pressure and heart rate. Measure blood pressure and heart rate prior to initiating treatment with SAVELLA and monitor periodically throughout treatment ( 5.3 , 5.4 ). Seizures : Cases have been reported with SAVELLA therapy. Prescribe SAVELLA with care in patients with a history of seizure disorder ( 5.5 ). Hepatotoxicity : SAVELLA may cause elevations of ALT and AST. Avoid concomitant use of SAVELLA in patients with substantial alcohol use or chronic liver disease ( 5.6 ). Discontinuation : Withdrawal symptoms have been reported in patients when discontinuing treatment with SAVELLA. A gradual dose reduction is recommended ( 5.7 ). Increased Risk of Bleeding : SAVELLA may increase the risk of bleeding events. Caution patients about the risk of bleeding associated with the concomitant use of SAVELLA and NSAIDs, aspirin, or other drugs that affect coagulation ( 5.9 ). History of Dysuria : Male patients with a history of obstructive uropathies may experience higher rates of genitourinary adverse events ( 5.11 ). Sexual Dysfunction : SAVELLA use may cause symptoms of sexual dysfunction ( 5.12 ). 5.1 Suicide Risk SAVELLA is a selective serotonin and norepinephrine re-uptake inhibitor (SNRI), similar to some drugs used for the treatment of depression and other psychiatric disorders. Patients, both adult and pediatric, with depression or other psychiatric disorders may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking these medications, and this risk may persist until significant remission occurs. Suicide is a known risk of depression and certain other psychiatric disorders, and these disorders themselves are the strongest predictors of suicide. There has been a long-standing concern, however, that antidepressants, including drugs that inhibit the reuptake of norepinephrine and/or serotonin, may have a role in inducing worsening of depression and the emergence of suicidality in certain patients during the early phases of treatment. In the placebo-controlled clinical trials of adults with fibromyalgia, among the patients who had a history of depression at treatment initiation, the incidence of suicidal ideation was 0.5% in patients treated with placebo, 0% in patients treated with SAVELLA 100 mg/day, and 1.3% in patients treated with SAVELLA 200 mg/day. No suicides occurred in the short-term or longer-term (up to 1 year) fibromyalgia trials. Pooled analyses of short-term placebo-controlled trials of drugs used to treat depression (SSRIs and others) showed that these drugs increase the risk of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults (ages 18-24) with major depressive disorder (MDD) and other psychiatric disorders. Short-term studies did not show an increase in the risk of suicidality with these drugs compared to placebo in adults beyond age 24; there was a reduction in suicidality risk with antidepressants compared to placebo in adults age 65 and older. The pooled analyses of placebo-controlled trials in children and adolescents with MDD, obsessive compulsive disorder (OCD), or other psychiatric disorders included a total of 24 short-term trials of 9 drugs used to treat depression in over 4400 patients. The pooled analyses of placebo-controlled trials in adults with MDD or other psychiatric disorders included a total of 295 short-term trials (median duration of 2 months) of 11 antidepressant drugs in over 77,000 patients. There was considerable variation in risk o

4 CONTRAINDICATIONS Serotonin Syndrome and MAOIs: Do not use MAOIs intended to treat psychiatric disorders with SAVELLA or within 5 days of stopping treatment with SAVELLA. Do not use SAVELLA within 14 days of stopping an MAOI intended to treat psychiatric disorders. In addition, do not start SAVELLA in a patient who is being treated with linezolid or intravenous methylene blue ( 4.1 , 5.2 ). 4.1 Monoamine Oxidase Inhibitors (MAOIs) The use of MAOIs intended to treat psychiatric disorders with SAVELLA or within 5 days of stopping treatment with SAVELLA is contraindicated because of an increased risk of serotonin syndrome. The use of SAVELLA within 14 days of stopping an MAOI intended to treat psychiatric disorders is also contraindicated [see Dosage and Administration ( 2.5 ), Warnings and Precautions ( 5.2 )] . Starting SAVELLA in a patient who is being treated with MAOIs such as linezolid or intravenous methylene blue is also contraindicated because of an increased risk of serotonin syndrome [see Dosage and Administration ( 2.6 ), Warnings and Precautions ( 5.2 )] .

10 OVERDOSAGE Clinical Presentation There is limited clinical experience with SAVELLA overdose in humans. In clinical trials, cases of acute ingestions up to 1000 mg, alone or in combination with other drugs, were reported with none being fatal. In postmarketing experience, fatal outcomes have been reported for acute overdoses primarily involving multiple drugs but also with SAVELLA only. The most common signs and symptoms included increased blood pressure, cardio-respiratory arrest, changes in the level of consciousness (ranging from somnolence to coma), confusional state, dizziness, and increased hepatic enzymes. Management of Overdose There is no specific antidote to SAVELLA, but if serotonin syndrome ensues, specific treatment (such as with cyproheptadine and/or temperature control) may be considered. In case of acute overdose, treatment should consist of those general measures employed in the management of overdose with any drug. Ensure adequate airway, oxygenation, and ventilation and monitor cardiac rhythm and vital signs. Induction of emesis is not recommended. Gastric lavage with a large-bore orogastric tube with appropriate airway protection, if needed, may be indicated if performed soon after ingestion or in symptomatic patients. Because there is no specific antidote for SAVELLA, consider symptomatic care and treatment with gastric lavage and activated charcoal as soon as possible for patients who experience a SAVELLA overdose. Due to the large volume of distribution of this drug, forced diuresis, dialysis, hemoperfusion, and exchange transfusion are unlikely to be beneficial. In managing overdose, consider the possibility of multiple drug involvement. The physician should consider contacting a poison control center for additional information on the treatment of any overdose. Telephone numbers for certified poison control centers are listed in the Physicians’ Desk Reference (PDR).