Asthma-Related Deaths
[See BOXED WARNING]
Data from a large placebo-controlled study in asthma
patients showed that long-acting beta2-adrenergic agonists may increase the
risk of asthma-related death. Data are not available to determine whether the
rate of death in patients with COPD is increased by long-acting beta2-adrenergic
agonists.
A 28-week, placebo-controlled US study comparing the safety
of salmeterol with placebo, each added to usual asthma therapy, showed an
increase in asthma-related deaths in patients receiving salmeterol (13/13,176 in
patients treated with salmeterol vs. 3/13,179 in patients treated with placebo;
RR 4.37, 95% CI 1.25, 15.34). The increased risk of asthma-related death is
considered a class effect of the long-acting beta2-adrenergic agonists,
including PERFOROMIST Inhalation Solution. No study adequate to determine
whether the rate of asthma related death is increased in patients treated with
PERFOROMIST Inhalation Solution has been conducted. The safety and efficacy of
PERFOROMIST in patients with asthma have not been established. All LABA,
including PERFOROMIST, are contraindicated in patients with asthma without use
of a long-term asthma control medication. [see CONTRAINDICATIONS].
Clinical studies with formoterol fumarate administered as a
dry powder inhaler suggested a higher incidence of serious asthma exacerbations
in patients who received formoterol than in those who received placebo. The
sizes of these studies were not adequate to precisely quantify the differences
in serious asthma exacerbation rates between treatment groups.
Deterioration of Disease and Acute Episodes
PERFOROMIST Inhalation Solution should not be initiated in
patients with acutely deteriorating COPD, which may be a life-threatening
condition. PERFOROMIST Inhalation Solution has not been studied in patients
with acutely deteriorating COPD. The use of PERFOROMIST Inhalation Solution in
this setting is inappropriate.
PERFOROMIST Inhalation Solution should not be used for the
relief of acute symptoms, i.e., as rescue therapy for the treatment of acute
episodes of bronchospasm. PERFOROMIST Inhalation Solution has not been studied
in the relief of acute symptoms and extra doses should not be used for that
purpose. Acute symptoms should be treated with an inhaled short-acting beta2-agonist.
When beginning PERFOROMIST Inhalation Solution, patients who
have been taking inhaled, short-acting beta2-agonists on a regular basis (e.g.,
four times a day) should be instructed to discontinue the regular use of these
drugs and use them only for symptomatic relief of acute respiratory symptoms.
When prescribing PERFOROMIST Inhalation Solution, the healthcare provider
should also prescribe an inhaled, short-acting beta2-agonist and instruct the
patient how it should be used. Increasing inhaled beta2-agonist use is a signal
of deteriorating disease for which prompt medical attention is indicated. COPD
may deteriorate acutely over a period of hours or chronically over several days
or longer. If PERFOROMIST Inhalation Solution no longer controls the symptoms
of bronchoconstriction, or the patient's inhaled, short-acting beta2-agonist
becomes less effective or the patient needs more inhalation of short-acting
beta2-agonist than usual, these may be markers of deterioration of disease. In
this setting, a re-evaluation of the patient and the COPD treatment regimen
should be undertaken at once. Increasing the daily dosage of PERFOROMIST
Inhalation Solution beyond the recommended 20 mcg twice daily dose is not
appropriate in this situation.
Excessive Use and Use with Other Long-Acting Beta2-Agonists
As with other inhaled beta2-adrenergic drugs, PERFOROMIST
Inhalation Solution should not be used more often, at higher doses than
recommended, or in conjunction with other medications containing long-acting
beta2-agonists, as an overdose may result. Clinically significant
cardiovascular effects and fatalities have been reported in association with
excessive use of inhaled sympathomimetic drugs.
Paradoxical Bronchospasm
As with other inhaled beta2-agonists, PERFOROMIST Inhalation
Solution can produce paradoxical bronchospasm that may be life-threatening. If
paradoxical bronchospasm occurs, PERFOROMIST Inhalation Solution should be
discontinued immediately and alternative therapy instituted.
Cardiovascular Effects
PERFOROMIST Inhalation Solution, like other beta2-agonists,
can produce a clinically significant cardiovascular effect in some patients as
measured by increases in pulse rate, systolic and/or diastolic blood pressure,
and/or symptoms. If such effects occur, PERFOROMIST Inhalation Solution may
need to be discontinued. In addition, beta-agonists have been reported to
produce ECG changes, such as flattening of the T wave, prolongation of the QTc
interval, and ST segment depression. The clinical significance of these
findings is unknown. Therefore, PERFOROMIST Inhalation Solution, like other
sympathomimetic amines, should be used with caution in patients with
cardiovascular disorders, especially coronary insufficiency, cardiac
arrhythmias, and hypertension.
Coexisting Conditions
PERFOROMIST Inhalation Solution, like other sympathomimetic
amines, should be used with caution in patients with convulsive disorders or
thyrotoxicosis, and in patients who are unusually responsive to sympathomimetic
amines. Doses of the related beta2- agonist albuterol, when
administered intravenously, have been reported to aggravate preexisting
diabetes mellitus and ketoacidosis.
Hypokalemia and Hyperglycemia
Beta-agonist medications may produce significant hypokalemia
in some patients, possibly through intracellular shunting, which has the
potential to produce adverse cardiovascular effects [see CLINICAL
PHARMACOLOGY]. The decrease in serum potassium is usually transient, not
requiring supplementation. Beta-agonist medications may produce transient
hyperglycemia in some patients. Clinically significant changes in serum
potassium and blood glucose were infrequent during clinical studies with
long-term administration of PERFOROMIST Inhalation Solution at the recommended
dose.
Immediate Hypersensitivity Reactions
Immediate hypersensitivity reactions may occur after
administration of PERFOROMIST Inhalation Solution, as demonstrated by cases of
anaphylactic reactions, urticaria, angiodema, rash, and bronchospasm.
Patient Counseling Information
Asthma-Related Death
Patients should be informed
that long acting beta agonist, such as PERFOROMIST, increase the risk of
asthma-related death. All LABA, including PERFOROMIST, should not be used in
patients with asthma without use of a long-term asthma control medication.
Acute Exacerbations or
Deteriorations
PERFOROMIST Inhalation Solution is
not indicated for relief of acute symptoms, and extra doses should not be used
for that purpose. Acute symptoms should be treated with an inhaled,
short-acting beta2-agonist (the healthcare provider should provide the patient
with such medication and instruct the patient in how it should be used).
Patients should be instructed to seek medical attention if their
symptoms worsen despite recommended doses of PERFOROMIST Inhalation Solution,
if PERFOROMIST Inhalation Solution treatment becomes less effective, or if they
need more inhalations of a short-acting beta2-agonist than usual.
Appropriate Dosing
Patients should not stop using PERFOROMIST Inhalation
Solution unless told to do so by a healthcare provider because symptoms may get
worse. Patients should not inhale more than the prescribed number of vials at
any one time. The daily dosage of PERFOROMIST Inhalation Solution should not
exceed one vial twice daily (40 mcg total daily dose). Excessive use of
sympathomimetics may cause significant cardiovascular effects, and may be
fatal.
Concomitant Therapy
Patients who have been taking inhaled, short-acting beta2-agonists
(e.g., albuterol) on a regular basis should be instructed to discontinue the
regular use of these products and use them only for symptomatic relief of acute
symptoms. PERFOROMIST Inhalation Solution should not be used in conjunction
with other inhaled medications containing long-acting beta2-agonists. Patients
should be warned not to stop or change the dose of other concomitant COPD
therapy without medical advice, even if symptoms improve after initiating
treatment with PERFOROMIST Inhalation Solution.
Common Adverse Reactions with Beta2-agonists
Patients should be informed that treatment with beta2-agonists
may lead to adverse reactions that include palpitations, chest pain, rapid
heart rate, increased or decreased blood pressure, headache, tremor,
nervousness, dry mouth, muscle cramps, nausea, dizziness, fatigue, malaise, low
blood potassium, high blood sugar, high blood acid, or trouble sleeping [see ADVERSE
REACTIONS].
Instructions for Administration
It is important that patients understand how to use PERFOROMIST
Inhalation Solution with a nebulizer appropriately [see the accompanying Medication
Guide]. Patients should be instructed not to mix other medications with
PERFOROMIST Inhalation Solution or ingest PERFOROMIST Inhalation Solution.
Patients should throw the plastic dispensing container away immediately after
use. Due to their small size, the container and top pose a danger of choking to
young children.
FDA-Approved Medication Guide
See the accompanying Medication Guide.
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment of Fertility
The carcinogenic potential of formoterol fumarate has been
evaluated in 2-year drinking water and dietary studies in both rats and mice.
In rats, the incidence of ovarian leiomyomas was increased at doses of 15 mg/kg
and above in the drinking water study and at 20 mg/kg in the dietary study (AUC
exposure approximately 2300 times human exposure at the maximum recommended
daily inhalation dose), but not at dietary doses up to 5 mg/kg (AUC exposure
approximately 570 times human exposure at the maximum recommended daily
inhalation dose). In the dietary study, the incidence of benign ovarian
theca-cell tumors was increased at doses of 0.5 mg/kg (AUC exposure was
approximately 57 times human exposure at the maximum recommended daily
inhalation dose) and above. This finding was not observed in the drinking water
study, nor was it seen in mice (see below). In mice, the incidence of adrenal
subcapsular adenomas and carcinomas was increased in males at doses of 69 mg/kg
(AUC exposure approximately 1000 times human exposure at the maximum
recommended daily inhalation dose) and above in the drinking water study, but
not at doses up to 50 mg/kg (AUC exposure approximately 750 times human
exposure at the maximum recommended daily inhalation dose) in the dietary
study. The incidence of hepatocarcinomas was increased in the dietary study at doses
of 20 and 50 mg/kg in females (AUC exposures approximately 300 and 750 times
human exposure at the maximum recommended daily inhalation dose, respectively)
and 50 mg/kg in males, but not at doses up to 5 mg/kg (AUC exposure
approximately 75 times human exposure at the maximum recommended daily
inhalation dose). Also in the dietary study, the incidence of uterine
leiomyomas and leiomyosarcomas was increased at doses of 2 mg/kg (AUC exposure
was approximately 30 times human exposure at the maximum recommended daily
inhalation dose) and above. Increases in leiomyomas of the rodent female
genital tract have been similarly demonstrated with other beta-agonist drugs.
Formoterol fumarate was not mutagenic or clastogenic in the following tests:
mutagenicity tests in bacterial and mammalian cells, chromosomal analyses in
mammalian cells, unscheduled DNA synthesis repair tests in rat hepatocytes and
human fibroblasts, transformation assay in mammalian fibroblasts and micronucleus
tests in mice and rats. Reproduction studies in rats revealed no impairment of
fertility at oral doses up to 3 mg/kg (approximately 600 times the maximum recommended
daily inhalation powder dose in humans on a mg/m² basis).
Animal Pharmacology
Studies in laboratory animals (minipigs, rodents, and dogs)
have demonstrated the occurrence of cardiac arrhythmias and sudden death (with
histologic evidence of myocardial necrosis) when beta-agonists and
methylxanthines are administered concurrently. The clinical significance of
these findings is unknown. [See DRUG INTERACTIONS, Xanthine
Derivatives, Steroids, or Diuretics]
Use In Specific Populations
Pregnancy
Teratogenic Effects: Pregnancy Category C
Formoterol fumarate administered throughout organogenesis
did not cause malformations in rats or rabbits following oral administration.
However, formoterol fumarate was found to be teratogenic in rats and rabbits in
other testing laboratories. When given to rats throughout organogenesis, oral
doses of 0.2 mg/kg (approximately 40 times the maximum recommended daily
inhalation dose in humans on a mg/m² basis) and above delayed ossification of
the fetus, and doses of 6 mg/kg (approximately 1200 times the maximum recommended
daily inhalation dose in humans on a mg/m²basis) and above decreased fetal
weight. Formoterol fumarate has been shown to cause stillbirth and neonatal
mortality at oral doses of 6 mg/kg and above in rats receiving the drug during
the late stage of pregnancy. These effects, however, were not produced at a
dose of 0.2 mg/kg. Because there are no adequate and well-controlled studies in
pregnant women, PERFOROMIST Inhalation Solution should be used during pregnancy
only if the potential benefit justifies the potential risk to the fetus.
Women should be advised to contact their physician if they
become pregnant while taking PERFOROMIST Inhalation Solution.
Labor and Delivery
There are no adequate and well-controlled human studies that
have investigated the effects of PERFOROMIST Inhalation Solution during labor
and delivery.
Because beta-agonists may potentially interfere with uterine
contractility, PERFOROMIST Inhalation Solution should be used during labor only
if the potential benefit justifies the potential risk.
Nursing Mothers
In reproductive studies in rats, formoterol was excreted in
the milk. It is not known whether formoterol is excreted in human milk, but
because many drugs are excreted in human milk, caution should be exercised if
PERFOROMIST Inhalation Solution is administered to nursing women. There are no
well-controlled human studies of the use of PERFOROMIST Inhalation Solution in
nursing mothers. Women should be advised to contact their physician if they are
nursing while taking PERFOROMIST Inhalation Solution.
Pediatric Use
PERFOROMIST Inhalation Solution is not indicated for use in
children. The safety and effectiveness of PERFOROMIST Inhalation Solution in
pediatric patients have not been established. The pharmacokinetics of
formoterol fumarate has not been studied in pediatric patients.
Geriatric Use
Of the 586 subjects who received PERFOROMIST Inhalation
Solution in clinical studies, 284 were 65 years and over, while 89 were 75
years and over. Of the 123 subjects who received PERFOROMIST Inhalation
Solution in the 12-week safety and efficacy trial, 48 (39%) were 65 years of
age or older. No overall differences in safety or effectiveness were observed
between these subjects and younger subjects. Other reported clinical experience
has not identified differences in responses between the elderly and younger
adult patients, but greater sensitivity of some older individuals cannot be
ruled out. The pharmacokinetics of PERFOROMIST Inhalation Solution has not been
studied in elderly subjects.
Last reviewed on RxList: 2/3/2012
This monograph has been modified to include the generic and brand name in many instances.