Aromatic Amino Acid

Duopa

Approved 9 Jan 2015EnteralSuspension

Indications

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 )

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 )

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 )

5.1Gastrointestinal 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 ) ] .

At a glance

Brand name: Duopa
Active substance: carbidopa
Pharmacologic class: Aromatic Amino Acid
Route: Enteral
Dosage form: Suspension
Applicant: Abbvie
Status: Prescription
FDA approval: 9 Jan 2015
Application: NDA203952-001

Indications

Contraindications

Warnings and precautions

5.1Gastrointestinal and Gastrointestinal Procedure-Related Risks Because

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.

6.1Clinical 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, anxiety, dysphagia, and vomiting. The most common adverse reactions associated with complications due to PEG-J insertion were: abdominal pain, abdominal discomfort, abdominal distension, flatulence, or pneumoperitoneum.

Additional adverse reactions that were co-reported with complication of naso-jejunal and PEG-J insertion included upper abdominal pain, duodenal ulcer, duodenal ulcer hemorrhage, erosive duodenitis, erosive gastritis, gastrointestinal hemorrhage, intussusception, peritonitis, post-operative abscess, and small intestine ulcer.

Duopa

Indications

Contraindications

Warnings and precautions

5.1Gastrointestinal and Gastrointestinal Procedure-Related Risks Because

At a glance

Two medicines in one question?

Duopa

Indications

Contraindications

Warnings and precautions

5.1Gastrointestinal and Gastrointestinal Procedure-Related Risks Because

At a glance

Two medicines in one question?

5.2Falling Asleep During Activities of Daily Living and Somnolence

5.3Orthostatic Hypotension

5.4Hallucinations/Psychosis/Confusion

5.5Impulse Control/Compulsive Behaviors

5.7Withdrawal-Emergent Hyperpyrexia and Confusion

5.8Dyskinesia

5.9Vitamin B6 Deficiency and Seizures Treatment

Interactions

7.1Monoamine Oxidase (MAO) Inhibitors

7.2Antihypertensive Drugs

7.3Dopamine D2 Receptor Antagonists and Isoniazid Dopamine

7.4Iron Salts

7.5High-Protein Diet

Pregnancy and breastfeeding

8.1Pregnancy Risk Summary

Adverse reactions

6.1Clinical Trials Experience

Composition

Official product information