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Contrave

Contrave

Manufacturer:

Orexigen

Distributor:

iNova

Marketer:

iNova
Concise Prescribing Info
Contents
Naltrexone HCl 8 mg, bupropion HCl 90 mg
Indications/Uses
Adjunct to reduced-calorie diet & increased physical activity for chronic wt management in adults w/ initial BMI of ≥30 kg/m2 (obese) or ≥27 kg/m2 (overwt) in presence of at least 1 wt-related comorbid condition (eg, HTN, type 2 DM or dyslipidemia).
Dosage/Direction for Use
Wk 1: 1 tab in the morning. Wk 2: 1 tab in the morning & 1 tab in the evening. Wk 3: 2 tab in the morning & 1 tab in the evening. Wk 4 onwards: 2 tab in the morning & 2 tab in the evening. Concomitant use w/ CYP2B6 inhibitors (eg, ticlopidine or clopidogrel) Max daily dose: 2 tab (1 tab each morning & evening). Patient switching to or from a MAOI antidepressant Elapse at least 14 days between MAOI discontinuation & Contrave therapy initiation. Conversely, allow at least 14 days after stopping Contrave before starting a MAOI antidepressant. Moderate to severe renal impairment Max daily dose: 2 tab (1 tab each morning & evening). Mild hepatic impairment Max daily dose: 2 tab. Initiate w/ 1 tab in the morning for 1st wk of treatment & escalate to 1 tab in the morning & 1 tab in the evening from wk 2 onwards.
Administration
Should be taken with food: Do not cut/chew/crush. Not to be taken w/ high-fat meal.
Contraindications
Hypersensitivity; reported anaphylactoid/anaphylactic reactions & SJS w/ bupropion. Uncontrolled HTN. Seizure disorder or history of seizures. Use of other bupropion-containing products. Bulimia or anorexia nervosa, which increase risk for seizure. Patients currently dependent on opioids including opioid-containing medication, those treated w/ opioid agonists used in opioid dependence (eg, methadone, buprenorphine) or in acute opioid w/drawal. Patient undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates & antiepileptics. Concomitant administration w/ MAOIs. Severe hepatic impairment.
Special Precautions
Reported anaphylactoid/anaphylactic reactions (eg, pruritus, urticaria, angioedema & dyspnea); arthralgia, myalgia, fever w/ rash & other symptoms suggestive of delayed hypersensitivity. May experience worsening of depression &/or emergence of suicidal ideation & behavior or unusual behavioral changes in adult & ped patients w/ major depressive disorder; appropriately monitor & closely observe especially during initial few mth of therapy or at times of dose changes. Consider changing therapeutic regimen including possible discontinuation in patients whose depression is persistently worse, experiencing emergent suicidality or symptoms that might be precursors to worsening depression or suicidality, especially if these are severe, abrupt in onset, or not part of patient's presenting symptoms. Alert families & caregivers to monitor for emergence of anxiety, agitation, irritability, unusual changes in behavior & other symptoms; suicidality. Not approved for smoking cessation treatment; & for use in treating bipolar depression. Neuropsychiatric adverse events in patients w/ & w/o pre-existing psychiatric disease; worsening of psychiatric illnesses. Observe occurrence of neuropsychiatric adverse events; immediately discontinue use if agitation, depressed mood, or changes in behavior or thinking that are not typical for patient are observed, or suicidal ideation/behavior develops. Discontinue use & do not restart in patients who experience seizures during treatment. Patients w/ predisposing factors that may increase risk of seizure including history of head trauma or prior seizure, severe stroke, arteriovenous malformation, CNS tumor or infection, or metabolic disorders (eg, hypoglycemia, hyponatremia, severe hepatic impairment & hypoxia); excessive alcohol or sedatives use, addiction to cocaine or stimulants, or sedative w/drawal; those w/ diabetes treated w/ insulin &/or oral diabetic medications (eg, sulfonylureas & meglitinides) that may cause hypoglycemia; concomitant administration w/ medications that may lower seizure threshold including other bupropion products, antipsychotics, TCAs, theophylline, systemic steroids. Not to be administered to patients currently dependent on opioids including opioid-containing medication or patients treated w/ opioid agonists used in opioid dependence (eg, methadone, buprenorphine) or patients in acute opioid w/drawal. Observed serious life-threatening reactions (eg, seizure & serotonin syndrome); reported insufficient intra-/post-op opioid analgesia during treatment. Discontinue Contrave for min of 3 days before & do not increase opioid dose above standard dose in patients requiring intermittent treatment w/ opioids (eg, due to surgical procedure). Opioid-free interval of min 7-10 days is recommended for patients previously dependent on short-acting opioids, & those transitioning from buprenorphine or methadone may need as long as 2 wk. Reported HTN; measure BP & pulse prior to starting therapy & monitor at regular intervals consistent w/ usual clinical practice, particularly among patients w/ controlled HTN prior to treatment. Discontinue treatment if patient experiences clinically relevant & sustained BP & pulse rate increases. Reported severe cutaneous adverse reactions (eg, SJS & acute generalised exanthematous pustulosis); closely monitor for skin reactions; immediately w/draw & consider alternative treatment if signs & symptoms suggestive of these reactions appear. Discontinue use in the event of symptoms &/or signs of acute hepatitis. Reported serotonin syndrome when co-administered w/ serotonergic agent (eg, SSRIs or SNRIs) & opioids (eg, tramadol, methadone); carefully observe patient during treatment initiation & dose increases. Consider discontinuation of therapy if serotonin syndrome is suspected. Screen patients for history of bipolar disorder & presence of bipolar disorder risk factors (eg, family history of bipolar disorder, suicide or depression). Patients w/ history of psychiatric disorders. Angle-closure glaucoma. Measure blood glucose levels prior to starting & during treatment in patients w/ type 2 diabetes. Consider decreasing antidiabetic medication doses which are non-glucose-dependent; change antidiabetic drug regimen if hypoglycemia develops after starting Contrave. May unmask Brugada syndrome; patients w/ Brugada syndrome or family history of cardiac arrest or sudden death. Cases of hepatitis & clinically significant liver dysfunction; transient, asymptomatic hepatic transaminase elevations. Not recommended in patients w/ ESRD & moderate hepatic impairment. Not to be used during pregnancy or in women currently attempting to become pregnant. Lactation. Not recommended in ped patients <18 yr. Elderly >65 yr.
Adverse Reactions
Nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth, diarrhea, anxiety, hot flush, fatigue, tremor, upper abdominal pain, viral gastroenteritis, flu, tinnitus, UTI, HTN, abdominal pain, hyperhidrosis, irritability, increased BP, dysgeusia, rash, muscle strain, palpitations.
Drug Interactions
Increased AUC & Cmax of metoprolol. Co-administration w/ drugs metabolized by CYP2D6 isozyme including certain antidepressants (eg, SSRIs & many tricyclics), antipsychotics (eg, haloperidol, risperidone & thioridazine), β-blockers (eg, metoprolol) & type 1C antiarrhythmics (eg, propafenone & flecainide); drugs that lower seizure threshold (eg, antipsychotics, antidepressants, theophylline or systemic corticosteroids). May reduce efficacy of tamoxifen. May decrease plasma levels of digoxin. Bupropion: May increase risk of hypertensive reactions when used concomitantly w/ drugs inhibiting re-uptake of dopamine or norepinephrine including MAOIs. Increased bupropion exposure & decreased hydroxybupropion exposure w/ CYP2B6 inhibitors (eg, ticlopidine & clopidogrel). Decreased bupropion & hydroxybupropion exposure & reduced efficacy w/ CYP2B6 inducers (eg, ritonavir, lopinavir & efavirenz). Reported CNS toxicity w/ levodopa & amantadine. Rare reports of adverse neuropsychiatric events or reduced alcohol tolerance in patients who were drinking alcohol during treatment w/ bupropion; minimize or avoid alcohol consumption. Reported false +ve urine immunoassay screening tests for amphetamines. Naltrexone: May not fully benefit from treatment w/ opioid-containing medicines (eg, cough & cold remedies, antidiarrheal prep, & opioid analgesics) due to the antagonistic effect of naltrexone at the opioid receptor.
MIMS Class
Anti-Obesity Agents
ATC Classification
A08AA62 - bupropion and naltrexone ; Belongs to the class of centrally acting antiobesity products. Used in the treatment of obesity.
Presentation/Packing
Form
Contrave PR tab
Packing/Price
1 × 120's
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