Eluxadoline

1 INDICATIONS AND USAGE VIBERZI is indicated in adults for the treatment of irritable bowel syndrome with diarrhea (IBS-D). VIBERZI is a mu-opioid receptor agonist, indicated in adults for the treatment of irritable bowel syndrome with diarrhea (IBS-D). ( 1 )

2 DOSAGE AND ADMINISTRATION The recommended dosage of VIBERZI is 100 mg taken orally twice daily with food. The recommended dosage of VIBERZI is 75 mg taken orally twice daily with food in patients: unable to tolerate the 100 mg dose of VIBERZI [see Adverse Reactions ( 6.1 ) ]. receiving concomitant OATP1B1 inhibitors [see Drug Interactions ( 7 )] . with mild (Child-Pugh Class A) or moderate (Child-Pugh Class B) hepatic impairment [see Use in Specific Population s ( 8.6 ) ] . with moderate or severe renal impairment (eGFR less than 60 mL/min/1.73 m 2 ); and in patients with end stage renal disease (ESRD) not yet on dialysis (eGFR less than 15 mL/min/1.73 m 2 ) [see Use in Specific Populations ( 8.7 )]. Discontinue VIBERZI in patients who develop severe constipation [see Warnings and Precautions ( 5.4 )] . Instruct patients if they miss a dose, take the next dose at the regular time and not to take 2 doses at the same time to make up for a missed dose. The recommended dosage in adults is 100 mg twice daily taken with food. ( 2 ) The recommended dosage is 75 mg twice daily taken with food in patients: unable to tolerate the 100 mg dose. ( 2 , 6.1 ) receiving concomitant OATP1B1 inhibitors. ( 2 , 7 ) with mild or moderate hepatic impairment. ( 2 , 8.6 ) with moderate or severe renal impairment; and in patients with end stage renal disease not yet on dialysis. ( 2 , 8.7 ) Discontinue VIBERZI in patients who develop severe constipation. ( 2 ) If a dose is missed, take the next dose at the regular time; do not take 2 doses at once. ( 2 )

6 ADVERSE REACTIONS The following adverse reactions described below and elsewhere in the labeling include: Pancreatitis [see Warnings and Precautions ( 5.1 )] Sphincter of Oddi Spasm [ see Warnings and Precautions ( 5.2 )] Hypersensitivity Reactions [see Warnings and Precautions ( 5.3 )] Constipation [see Warnings and Precautions ( 5.4 )] Most common adverse reactions (>5%) are constipation, nausea and abdominal pain. ( 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 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. Over 1700 patients with IBS-D have been treated with 75 or 100 mg of VIBERZI twice daily in controlled trials. Exposures from placebo-controlled clinical trials in adult patients with IBS-D included 1391 exposed for 3 months, 1001 exposed for 6 months and 488 exposed for one year. Demographic characteristics were comparable between the treatment groups [see Clinical Studies ( 14 )] . Data described below represent pooled data compared to placebo across the randomized trials. Pancreatitis Cases of pancreatitis, not associated with sphincter of Oddi spasm, were reported in 2/807 (0.2%) of patients receiving 75 mg and 3/1032 (0.3%) of patients receiving 100 mg VIBERZI twice daily in clinical trials. Of these 5 cases, 3 were associated with excessive alcohol intake, one was associated with biliary sludge, and in one case the patient discontinued VIBERZI 2 weeks prior to the onset of symptoms. All pancreatic events resolved with lipase normalization upon discontinuation of VIBERZI, with 80% (4/5) resolving within 1 week of treatment discontinuation. The case of sphincter of Oddi spasm-induced pancreatitis resolved within 24 hours of discontinuation. Sp h incter of Oddi Spasm In clinical trials, sphincter of Oddi spasm occurred in 0.2% (2/807) of patients receiving 75 mg and 0.8% (8/1032) of patients receiving 100 mg VIBERZI twice daily. Among patients receiving 75 mg, 1/807 (0.1%) patient experienced a sphincter of Oddi spasm presenting with abdominal pain but with lipase elevation less than 3 times the upper limit of normal (ULN) and 1/ 807 (0.1%) patient experienced a sphincter of Oddi spasm manifested as elevated hepatic enzymes associated with abdominal pain Among patients receiving 100 mg, 1/1032 (0.1%) patient experienced a sphincter of Oddi spasm manifested as pancreatitis and 7/1032 (0.7%) patients experienced sphincter of Oddi spasm manifested as elevated hepatic enzymes associated with abdominal pain Of those patients who experienced a sphincter of Oddi spasm, 80% (8/10) reported their first onset of symptoms within the first week of treatment. The case of sphincter of Oddi spasm-induced pancreatitis occurred within minutes of taking the first dose of VIBERZI. No cases of sphincter of Oddi spasm occurred greater than 1 month after treatment onset. All events resolved upon discontinuation of VIBERZI, with symptoms typically improved by the following day. Common Adverse Reactions Table 1 provides the incidence of common adverse reactions reported in > 2% of IBS-D patients in either VIBERZI treatment group and at an incidence greater than in the placebo group. Table 1: Common* Adverse Reactions in the Placebo-Controlled Studies in IBS-D Patients Adverse Reactions VIBERZI 100 mg twice daily (N= 1032) % VIBERZI 75 mg twice daily (N=807) % Placebo (N=975) % Constipation 8 7 2 Nausea 7 8 5 Abdominal Pain** 7 6 4 Upper Respiratory Tract Infection 5 3 4 Vomiting 4 4 1 Nasopharyngitis 3 4 3 Abdominal Distention 3 3 2 Bronchitis 3 3 2 Dizziness 3 3 2 Flatulence 3 3 2 Rash*** 3 3 2 Increased ALT 3 2 1 Fatigue 2 3 2 Viral gastroenteritis 1 3 2 * Reported in > 2% of VIBERZI-treated patients at either dose and at an incidence greater than in placebo-treated patients ** " Abdominal Pain" term includes: abdominal pain, abdominal pain lower, and abdominal pain upper *** " Rash" term includes: dermatitis, dermatitis allergic, rash, rash erythematous, rash generalized, rash maculo-papular, rash papular, rash pruritic, urticaria, and idiopathic urticaria Constipation was the most commonly reported adverse reaction in VIBERZI-treated patients in these trials. Approximately 50% of constipation events occurred within the first 2 weeks of treatment while the majority occurred within the first 3 months of therapy. Rates of severe constipation were less than 1% in patients receiving 75 mg and 100 mg VIBERZI. Similar rates of constipation occurred between the active and placebo arms beyond 3 months of treatment. Adverse Reactions Leading to Discontinuation Eight percent of patients treated with 75 mg, 8% of patients treated with 100 mg VIBERZI and 4% of patients treated with placebo discontinued prematurely due to adverse reactions. In the VIBERZI treatment groups, the most common reasons for discontinuation due to adverse reactions were constipation (1% for 75 mg and 2% for 100 mg) and abdominal pain (1% for both 75 mg and 100 mg). In comparison, less than 1% of patients in the placebo group withdrew due to constipation or abdominal pain. Less Common Adverse Reactions Adverse reactions that were reported in ≤ 2% of VIBERZI-treated patients are listed below by body system. Gastrointestinal : gastroesophageal reflux disease General Disorders and administration site conditions : feeling drunk Investigations: increased AST Nervous system : sedation, somnolence Psychiatric disorders : euphoric mood Respiratory : asthma, bronchospasm, respiratory failure, wheezing 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of VIBERZI. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Hypersensitivity : anaphylaxis, angioedema (e.g. swollen face and throat), dyspnea, throat tightness, and chest pain/tightness [see Warnings and Precautions ( 5.3 )] .

12.3 Pharmacokinetics Following oral administration of 100 mg VIBERZI in healthy subjects, the C max of eluxadoline was approximately 2 to 4 ng/mL and AUC was 12 to 22 ng.h/mL. Eluxadoline has approximately linear pharmacokinetics with no accumulation upon repeated twice daily dosing. The variability of eluxadoline pharmacokinetic parameters ranges from 51% to 98%. Absorption Absolute bioavailability of eluxadoline has not been determined. Effect of Food The median T max value was 1.5 hours (range: 1 to 8 hours) under fed conditions and 2 hours (range: 0.5 to 6 hours) under fasting conditions [see Dosage and Administration ( 2 )] . The administration of VIBERZI with a high fat meal that contained approximately 800 to 1000 total calories, with 50% of calories being derived from fat content decreased the C max of eluxadoline by 50% and AUC by 60%. Distribution Plasma protein binding of eluxadoline was 81%. Elimination The mean plasma elimination half-life of eluxadoline ranged from 3.7 hours to 6 hours. Metabolism Cytochrome P450 (CYP) and UGT pathways have minimal involvement in the metabolism of eluxadoline. It is unlikely that metabolism of eluxadoline by these enzymes has a clinically meaningful impact on systemic exposure. Excretion Following a single oral dose of 300 mg [ 14 C] eluxadoline in healthy male subjects, 82.2% of the total radioactivity was recovered in feces within 336 hours and less than 1% was recovered in urine within 192 hours. Speci fic Populations Patients with Hepatic Impairment Following a single oral 100–mg dose in subjects with varying degrees of liver impairment and healthy subjects, mean eluxadoline plasma exposure was 6-fold, 4-fold, and 16-fold higher in mild, moderate, and severe hepatically impaired subjects (Child Pugh Class A, B, C), respectively, compared to the subjects with normal liver function [see Dosage and Administration ( 2 ) , Contraindications ( 4 ), Use in Specific Population s ( 8.6 ) ] . P a ti e nts with R e n a l I mp a i r m e nt Following a single oral 100 mg dose, the mean eluxadoline C max and AUC 0-t were 3.7-fold and 4.7-fold higher, respectively, in subjects with severe renal impairment (eGFR 15 to 30 mL/min/1.73 m 2 , n=2) and 2.4-fold and 5.9-fold higher, respectively, in subjects with ESRD not yet on dialysis (eGFR less than 15 mL/min/1.73 m 2 , n=6) compared to healthy subjects with normal renal function (n=6) [see Dosage and Administration ( 2 ), Use in Specific Populations ( 8.7 )]. Drug Interaction Studies In Vitro Assessment of Drug Interactions In vitro studies indicate that eluxadoline is neither an inducer of CYP1A2, CYP2C9, CYP2C19, and CYP3A4, nor an inhibitor of CYP1A2, CYP2A6, CYP2B6, CYP2C9, CYP2C19, and CYP2D6 at clinically relevant systemic concentrations. Although CYP2E1 was slightly inhibited by eluxadoline (IC 50 of approximately 20 micromolar [11 mcg/mL]), clinically meaningful interactions are unlikely. Despite mechanism-based inhibition of CYP3A4 in vitro , eluxadoline did not have a clinically meaningful drug-drug interaction with the CYP3A4 substrate midazolam. I n vitro studies suggest that eluxadoline is a substrate for OAT3, OATP1B1, BSEP and MRP2, but not for OCT1, OCT2, OAT1, OATP1B3, P-gp and BCRP. Based on the in vitro studies, clinically meaningful interaction via inhibition of OCT1, OCT2, OAT1, OAT3, OATP1B3, BSEP and MRP2 by eluxadoline is unlikely. In Vivo Assessment of Drug Interactions The following drug interactions were studied in healthy subjects: Oral Contraceptives Coadministration of multiple doses of 100 mg VIBERZI with multiple dose administration of an oral contraceptive (norethindrone 0.5 mg/ethinyl estradiol 0.035 mg) does not change the exposure of either drug. Cyclosporine Coadministration of a single dose of 100 mg VIBERZI with a single dose of 600 mg cyclosporine resulted in 4.4-fold and 6.2-fold increase in AUC and C max of eluxadoline, respectively, compared to administration of VIBERZI alone [see Drug Interactions ( 7 )] . Proben e cid Coadministration of a single dose of 100 mg VIBERZI with a single dose of 500 mg probenecid resulted in a 35% and 31% increase in eluxadoline AUC and C max , respectively, compared to administration of VIBERZI alone. This change in eluxadoline exposures is not expected to be clinically meaningful. Rosuvastatin Coadministration of multiple doses of 100 mg VIBERZI twice daily with a single dose 20 mg rosuvastatin resulted in an increase in the AUC (40%) and C max (18%) of rosuvastatin compared to administration of rosuvastatin alone. Similar results were observed with the active, major metabolite, n-desmethyl rosuvastatin [see Drug Interaction s ( 7 ) ] . Midazolam Coadministration of multiple doses of 100 mg VIBERZI twice daily with single dose administration of 4 mg midazolam did not affect midazolam pharmacokinetics in humans, suggesting that eluxadoline will not affect the exposure of concomitantly administered CYP3A4 substrates.