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Cerebrovascular Adverse Events (CAEs): CAEs, including fatalities,
have been reported in elderly patients with dementia-related
psychosis taking oral risperidone in clinical trials. The incidence
of CAEs with risperidone was significantly higher than with placebo.
RISPERDAL® CONSTA®.
is not approved for the treatment of patients with dementia-related
psychosis.
Neuroleptic Malignant Syndrome (NMS): NMS, a potentially fatal
symptom complex, has been reported with the use of antipsychotic
medications, including
RISPERDAL® CONSTA®.
. Clinical manifestations include muscle rigidity, fever, altered
mental status and evidence of autonomic instability (see full
Prescribing Information). Management should include immediate
discontinuation of antipsychotic drugs and other drugs not essential
to concurrent therapy, intensive symptomatic treatment and medical
monitoring, and treatment of any concomitant serious medical
problems.
Tardive Dyskinesia (TD): TD is a syndrome of potentially
irreversible, involuntary, dyskinetic movements that may develop in
patients treated with antipsychotic medications. The risk of
developing TD and the likelihood that dyskinetic movements will
become irreversible are believed to increase with duration of
treatment and total cumulative dose. Elderly patients appeared to be
at increased risk for TD. Prescribing should be consistent with the
need to minimize the risk of TD. The syndrome may remit, partially
or completely, if antipsychotic treatment is withdrawn.
Hyperglycemia and Diabetes: Hyperglycemia, some cases extreme and
associated with ketoacidosis, hyperosmolar coma or death has been
reported in patients treated with atypical antipsychotics (APS),
including
RISPERDAL® CONSTA®.
. Patients starting treatment with APS who have or are at risk for
diabetes should undergo fasting blood glucose testing at the
beginning of and during treatment. Patients who develop symptoms of
hyperglycemia should also undergo fasting blood glucose testing.
Hyperprolactinemia: As with other drugs that antagonize dopamine D2
receptors,
RISPERDAL® CONSTA®
elevates prolactin levels and the elevation persists during chronic
administration. Risperidone is associated with higher levels of
prolactin elevation than other antipsychotic agents.
Orthostatic Hypotension:
RISPERDAL® CONSTA®.
may induce orthostatic hypotension associated with dizziness,
tachycardia, and in some patients, syncope, especially during the
initial dose-titration period. Monitoring should be considered in
patients for whom this may be of concern.
RISPERDAL® CONSTA®.
should be used with caution in patients with known cardiovascular
disease, and conditions that would predispose patients to
hypotension.
Leukopenia, Neutropenia and Agranulocytosis has been reported with
antipsychotics, including risperidone. Patients with a pre-existing
low white blood cell count (WBC) or a history of
leukopenia/neutropenia should have frequent complete blood cell
counts during the first few months of therapy. At the first sign of
a decline in WBC and in the absence of other causative factors,
discontinuation of
RISPERDAL® CONSTA®.
should be considered.
Potential for Cognitive and Motor Impairment:
RISPERDAL® CONSTA®.
has the potential to impair judgment, thinking, or motor skills.
Patients should be cautioned about operating hazardous machinery,
including motor vehicles, until they are reasonably certain that
RISPERDAL® CONSTA®
does not affect them adversely.
Seizures:
RISPERDAL® CONSTA®.
should be used cautiously in patients with a history of seizures or
with conditions that potentially lower seizure threshold.
Dysphagia: Esophageal dysmotility and aspiration can occur. Use
cautiously in patients at risk for aspiration pneumonia.
Priapism has been reported. Severe priapism may require surgical
intervention.
Thrombotic Thrombocytopenic Purpura (TTP) has been reported.
Administration: Care should be taken to avoid inadvertent injection
into a blood vessel.
Suicide: The possibility of suicide attempt is inherent in
schizophrenia or bipolar disorder. Close supervision of high-risk
patients should accompany drug therapy.
Increased sensitivity in patients with Parkinson's disease or those
with dementia with Lewy bodies has been reported. Manifestations and
features are consistent with NMS.
Use
RISPERDAL® CONSTA®.
with caution in patients with conditions and medical conditions that
could affect metabolism or hemodynamic responses (e.g. recent
myocardial infarction or unstable cardiac disease).
Extrapyramidal Symptoms (EPS): The overall incidence of EPS-related
adverse events in patients with schizophrenia treated with 25 mg and
50 mg of
RISPERDAL® CONSTA®.
and placebo, respectively, were akathisia* (4%, 11%, 6%),
Parkinsonism† (8%, 15%, 9%) and tremor (0%, 3%, 0%).
* Akathisia and restlessness
† Extrapyramidal disorder,
musculoskeletal stiffness, muscle rigidity, and bradykinesia
The overall incidence of EPS-related adverse events in patients with
Bipolar I Disorder treated with adjunctive therapy with
RISPERDAL® CONSTA®
and placebo respectively were Parkinsonism** (15% and 6%), tremor
(24% and 16%), and dyskinesia‡ (6% and 3%).
** Muscle rigidity, hypokinesia, cogwheel rigidity, and bradykinesia
‡ Muscle twisting and dyskinesia
Weight Gain: In a 12-week trial in patients with schizophrenia, the
percentage of patients experiencing weight gain (>7% of baseline
body weight) was 6% placebo vs 9%
RISPERDAL® CONSTA®.
In a 24-month monotherapy trial in patients with Bipolar I Disorder,
the percentage of patients experiencing weight gain (>7% of baseline
body weight) was 2.8% placebo vs 11.6%
RISPERDAL® CONSTA®.
In a 52-week adjunctive therapy trial in patients with Bipolar I
Disorder, the percentage of patients experiencing weight gain (>7%
of baseline body weight) was 27.3% placebo vs 26.8%
RISPERDAL® CONSTA®.
Maintenance Treatment: Patients should be periodically reassessed to
determine the need for continued treatment.
Commonly Observed Adverse Reactions for
RISPERDAL® CONSTA®.
: The most common adverse reactions in clinical trials in patients
with schizophrenia (≥5%) were headache, Parkinsonism, dizziness,
akathisia, fatigue, constipation, dyspepsia, sedation, weight
increase, pain in extremities, and dry mouth.
The most common adverse reactions in clinical trials in patients
with Bipolar I Disorder were weight increased (5% in monotherapy
trial) and tremor and Parkinsonism (≥ 10% in adjunctive therapy
trial).
You are encouraged to report negative side effects of prescription
drugs to the FDA. Visit
www.fda.gov/medwatch, or call 1-800-FDA-1088.
01CS09051
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