Duopa

1 INDICATIONS AND USAGE DUOPA ® is indicated for the treatment of motor fluctuations in patients with advanced Parkinson’s disease. DUOPA is a combination of carbidopa (an aromatic amino acid decarboxylation inhibitor) and levodopa (an aromatic amino acid) indicated for the treatment of motor fluctuations in patients with advanced Parkinson’s disease ( 1 )

2 DOSAGE AND ADMINISTRATION Evaluate vitamin B6 levels prior to starting treatment with carbidopa/levodopa therapies. ( 2.1 ) The maximum recommended daily dose of DUOPA is 2000 mg of levodopa (i.e., one cassette per day) administered over 16 hours ( 2.2) Prior to initiating DUOPA, convert patients from all forms of levodopa to oral immediate-release carbidopa-levodopa tablets (1:4 ratio) ( 2.3 ) Titrate total daily dose based on clinical response for the patient ( 2.3 ) Administer DUOPA into the jejunum through a percutaneous endoscopic gastrostomy with jejunal tube (PEG-J) with the CADD®-Legacy 1400 portable infusion pump ( 2.4) 2.1 Management of Vitamin B6 Levels Evaluate vitamin B6 levels prior to initiating carbidopa/levodopa therapies including DUOPA, periodically during treatment, and as clinically indicated [see Warnings and Precautions ( 5.9 )] . If vitamin B6 levels are low, supplement to sufficient levels per standard of care. Patients may initiate and continue treatment with DUOPA while supplementing vitamin B6. 2. 2 DUOPA Daily Dose DUOPA is administered over a 16-hour infusion period. The daily dose is determined by individualized patient titration and composed of: A Morning Dose A Continuous Dose Extra Doses The maximum recommended daily dose of DUOPA is 2000 mg of the levodopa component (i.e., one cassette per day) administered over 16 hours. At the end of the daily 16-hour infusion, patients will disconnect the pump from the PEG-J and take their night-time dose of oral immediate-release carbidopa-levodopa tablets. Treatment with DUOPA is initiated in 3 steps [see Dosage and Administration ( 2.3 ) ] : Conversion of patients to oral immediate-release carbidopa-levodopa tablets in preparation for DUOPA treatment. Calculation and administration of the DUOPA starting dose (Morning Dose and Continuous Dose) for Day 1. Titration of the dose as needed based on individual clinical response and tolerability. Extra Doses DUOPA has an extra dose function that can be used to manage acute “Off” symptoms that are not controlled by the Morning Dose and the Continuous Dose administered over 16 hours. The extra dose function should be set at 1 mL (20 mg of levodopa) when starting DUOPA. If the amount of the extra dose needs to be adjusted, it is typically done in 0.2 mL increments. The extra dose frequency should be limited to one extra dose every 2 hours. Administration of frequent extra doses may cause or worsen dyskinesias. Once no further adjustments are required to the DUOPA Morning Dose, Continuous Dose, or Extra Dose, this dosing regimen should be administered daily. Over time, additional changes may be necessary based on the patient’s clinical response and tolerability. 2. 3 Initiation and Titration Instructions Prepare for DUOPA Treatment Prior to initiating DUOPA, convert patients from all other forms of levodopa to oral immediate-release carbidopa-levodopa tablets (1:4 ratio). Patients should remain on a stable dose of their concomitant medications taken for the treatment of Parkinson's disease before initiation of DUOPA infusion. Healthcare providers should ensure patients take their oral Parkinson's disease medications the morning of the PEG-J procedure. Determine the DUOPA Starting Dose for Day 1 The steps for determining the initial DUOPA daily dosing (Morning Dose and Continuous Dose) for Day 1 are outlined below. Step 1: Calculate and administer the DUOPA Morning Dose for Day 1 a. Determine the total amount of levodopa (in milligrams) in the first dose of oral immediate-release carbidopa-levodopa that was taken by the patient on the previous day. b. Convert the oral levodopa dose from milligrams to milliliters by multiplying the oral dose by 0.8 and dividing by 20 mg/mL. This calculation will provide the Morning Dose of DUOPA in milliliters. c. Add 3 milliliters to the Morning Dose to fill (prime) the intestinal tube to obtain the Total Morning Dose. d. The Total Morning Dose is usually administered over 10 to …

5 WARNINGS AND PRECAUTIONS Gastrointestinal procedure-related complications may result in serious outcomes, such as need for surgery or death ( 5.1 ) May cause falling asleep during activities of daily living ( 5.2 ) Monitor patients for orthostatic hypotension, especially after starting DUOPA or increasing the dose ( 5.3 ) Hallucinations/Psychosis/Confusion: May respond to dose reduction in levodopa ( 5.4 ) Impulse Control Disorders: Consider dose reductions or stopping DUOPA ( 5.5 ) Monitor patients for depression and suicidality ( 5.6 ) Avoid sudden discontinuation or rapid dose reduction to reduce the risk of withdrawal-emergent hyperpyrexia and confusion ( 5.7 ) May cause or exacerbate dyskinesia: Consider dose reduction ( 5.8 ) 5.1 Gastrointestinal and Gastrointestinal Procedure-Related Risks Because DUOPA is administered using a PEG-J or naso-jejunal tube, gastrointestinal complications can occur. These complications include abscess, bezoar, ileus, implant site erosion/ulcer, intestinal hemorrhage, intestinal ischemia, intestinal obstruction, intestinal perforation, intussusception, pancreatitis, peritonitis, pneumonia (including aspiration pneumonia), pneumoperitoneum, post-operative wound infection, and sepsis. These complications may result in serious outcomes, such as the need for surgery or death. Instruct patients to notify their healthcare provider immediately if they experience abdominal pain, prolonged constipation, nausea, vomiting, fever, or melanotic stool [see Patient Counseling Information ( 17 ) ] . 5.2 Falling Asleep During Activities of Daily Living and Somnolence Patients treated with levodopa, a component of DUOPA, have reported falling asleep while engaged in activities of daily living, including the operation of motor vehicles, which sometimes resulted in accidents. Although many of these patients reported somnolence while on levodopa, some perceived that they had no warning signs (sleep attack), such as excessive drowsiness, and believed that they were alert immediately prior to the event. Some of these events have been reported more than one year after initiation of treatment. Falling asleep while engaged in activities of daily living usually occurs in patients experiencing preexisting somnolence, although patients may not give such a history. For this reason, prescribers should reassess patients for drowsiness or sleepiness in DUOPA-treated patients, especially since some of the events occur well after the start of treatment. Prescribers should be aware that patients may not acknowledge drowsiness or sleepiness until directly questioned about drowsiness or sleepiness during specific activities. Patients who have already experienced somnolence or an episode of sudden sleep onset should not participate in these activities while taking DUOPA. Before initiating treatment with DUOPA, advise patients about the potential to develop drowsiness and specifically ask about factors that may increase the risk for somnolence with DUOPA such as the use of concomitant sedating medications or the presence of sleep disorders. Consider discontinuing DUOPA in patients who report significant daytime sleepiness or episodes of falling asleep during activities that require active participation (e.g., conversations, eating). If DUOPA is continued, they should be advised to avoid driving and other potentially dangerous activities that might result in harm if the patient becomes somnolent. 5.3 Orthostatic Hypotension DUOPA-treated patients were more likely to experience a decline in orthostatic blood pressure than patients treated with oral immediate-release carbidopa-levodopa in the controlled clinical study. Orthostatic systolic hypotension (≥30 mm Hg decrease) occurred in 73% of DUOPA-treated patients compared to 68% of patients treated with oral immediate-release carbidopa-levodopa in the controlled clinical study. Orthostatic diastolic hypotension (≥20 mm Hg decrease) occurred in 70% of DUOPA-treated patients compared…

4 CONTRAINDICATIONS DUOPA is contraindicated in patients who are currently taking a nonselective monoamine oxidase (MAO) inhibitor (e.g., phenelzine and tranylcypromine) or have recently (within 2 weeks) taken a nonselective MAO inhibitor. Hypertension can occur if these drugs are used concurrently [see Drug Interactions ( 7.1 and 7.2 )] . DUOPA is contraindicated in patients taking nonselective monoamine oxidase (MAO) inhibitors ( 4 )

7 DRUG INTERACTIONS Selective MAO-B inhibitors: May cause orthostatic hypotension ( 7.1 ) Antihypertensive drugs: May cause symptomatic postural hypotension. Dosage adjustment of the antihypertensive drug may be needed ( 7.2 ) Dopamine D2 receptor antagonists, isoniazid, iron salts, and high-protein diet may reduce the effectiveness of DUOPA ( 7.3 , 7.4 , 7.5 ) 7.1 Monoamine Oxidase (MAO) Inhibitors The use of nonselective MAO inhibitors with DUOPA is contraindicated [see Contraindications ( 4 ) ] . Discontinue use of any nonselective MAO inhibitors at least two weeks prior to initiating DUOPA. The use of selective MAO-B inhibitors (e.g., rasagiline and selegiline) with DUOPA may be associated with orthostatic hypotension. Monitor patients who are taking these drugs. 7.2 Antihypertensive Drugs The concurrent use of DUOPA with antihypertensive medications can cause symptomatic postural hypotension. A dose reduction of the antihypertensive medication may be needed after starting or increasing the dose of DUOPA. 7.3 Dopamine D2 Receptor Antagonists and Isoniazid Dopamine D2 receptor antagonists (e.g., phenothiazines, butyrophenones, risperidone, metoclopramide, papaverine) and isoniazid may reduce the effectiveness of levodopa. Monitor patients for worsening Parkinson’s symptoms. 7.4 Iron Salts Iron salts or multi-vitamins containing iron salts can form chelates with levodopa, carbidopa, and can cause a reduction in the bioavailability of DUOPA. If iron salts or multi-vitamins containing iron salts are co-administered with DUOPA, monitor patients for worsening Parkinson’s symptoms. 7.5 High-Protein Diet Because levodopa competes with certain amino acids for transport across the gut wall, the absorption of levodopa may be decreased in patients on a high-protein diet. Advise patients that a high-protein diet may reduce the effectiveness of DUOPA.

8.1 Pregnancy Risk Summary There are no adequate data on the developmental risk associated with the use of DUOPA in pregnant women. In animal studies, carbidopa-levodopa has been shown to be developmentally toxic (including teratogenic effects) at clinically relevant doses (see Data) . The estimated background risk of major birth defects and miscarriage in the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data When administered to pregnant rabbits throughout organogenesis, carbidopa-levodopa caused both visceral and skeletal malformations in fetuses at all doses and ratios of carbidopa-levodopa tested. No teratogenic effects were observed when carbidopa-levodopa was administered to pregnant mice throughout organogenesis. There was a decrease in the number of live pups delivered by rats receiving carbidopa-levodopa during organogenesis.

6 ADVERSE REACTIONS The following serious adverse reactions are discussed below and elsewhere in labeling: Gastrointestinal and Gastrointestinal Procedure-Related Risks [see Warnings and Precautions ( 5.1 ) ] Falling Asleep During Activities of Daily Living and Somnolence [see Warnings and Precautions ( 5.2 ) ] Orthostatic Hypotension [see Warnings and Precautions ( 5.3 ) ] Hallucinations/Psychosis/Confusion [see Warnings and Precautions ( 5.4 ) ] Impulse Control/Compulsive Behaviors [see Warnings and Precautions ( 5.5 ) ] Depression and Suicidality [see Warnings and Precautions ( 5.6 ) ] Withdrawal-Emergent Hyperpyrexia and Confusion [see Warnings and Precautions ( 5.7 ) ] Dyskinesia [see Warnings and Precautions ( 5.8 ) ] Vitamin B6 Deficiency and Seizures [see Warnings and Precautions ( 5.9 )] Neuropathy [see Warnings and Precautions ( 5.10 ) ] Cardiovascular Ischemic Events [see Warnings and Precautions ( 5.11 ) ] Laboratory Test Abnormalities [see Warnings and Precautions ( 5.12)] Glaucoma [see Warnings and Precautions ( 5.13 ) ] Most common adverse reactions for DUOPA (DUOPA incidence at least 7% greater than oral carbidopa-levodopa incidence) were: complication of device insertion, nausea, depression, peripheral edema, hypertension, upper respiratory tract infection, oropharyngeal pain, atelectasis, and incision site erythema. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact AbbVie Inc. at 1-800-633-9110 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical studies are run under widely varying conditions, the incidence of adverse reactions 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. In clinical studies, 416 patients with advanced Parkinson’s disease received DUOPA. 338 patients were treated with DUOPA for more than 1 year, 233 patients were treated with DUOPA for more than 2 years, and 162 patients were treated with DUOPA for more than 3 years. In a 12-week, active-controlled clinical trial (Study 1), a total of 71 patients with advanced Parkinson’s disease were enrolled and had a PEG-J procedure. Of these, 37 patients received DUOPA and 34 received oral immediate-release carbidopa-levodopa. The most common adverse reactions for DUOPA (incidence at least 7% greater than oral immediate-release carbidopa-levodopa) were: complication of device insertion, nausea, depression, peripheral edema, hypertension, upper respiratory tract infection, oropharyngeal pain, atelectasis, and incision site erythema. Table 3 lists the incidence of adverse reactions occurring in the DUOPA-treated group (requiring at least 2 patients in this group) in Study 1 when the incidence was numerically greater than that for oral immediate-release carbidopa-levodopa. Table 3. Adverse Reactions in Study 1 for DUOPA in Patients with Advanced Parkinson’s disease Preferred Term DUOPA (n = 37) % Oral immediate-release carbidopa-levodopa a (n = 34) % Complication of device insertion 57 44 Nausea 30 21 Constipation 22 21 Incision site erythema 19 12 Dyskinesia 14 12 Depression 11 3 Post procedural discharge 11 9 Peripheral edema 8 0 Hypertension 8 0 Upper respiratory tract infection 8 0 Oropharyngeal pain 8 0 Atelectasis 8 0 Confusional state 8 3 Anxiety 8 3 Dizziness 8 6 Hiatal hernia 8 6 Postoperative ileus 5 0 Sleep disorder 5 0 Pyrexia 5 0 Excessive granulation tissue 5 0 Rash 5 0 Bacteriuria 5 0 White blood cells urine positive 5 0 Hallucination 5 3 Psychotic disorder 5 3 Diarrhea 5 3 Dyspepsia 5 3 a All patients in the clinical trial regardless of treatment arm received a PEG-J. Procedure and Device- Related Adverse Reactions The most common adverse reactions associated with complications due to naso-jejunal (NJ) insertion were: oropharyngeal pain, abdominal distention, abdominal pain, abdominal discomfort, pain, throat irritation, gastrointestinal injury, esophageal hemorrhage, a…