Rozerem
SUMMARY:
What
Is Rozerem?
Rozerem is a
prescription medicine for adults to treat insomnia where the
problem is trouble falling asleep.
Rozerem has not been
studied in children. It is not known if Rozerem is safe and
effective for children.
Who
Should Not Take Rozerem?
You should not take
Rozerem if you have any of the following conditions:
What
Are The Risks?
The following are the
major potential risks and side effects of Rozerem therapy.
However, this list is not complete. The following are the major
potential risks and side effects of Rozerem therapy:
What
Should I Tell My Healthcare Professional?
Before
you start taking Rozerem, tell your healthcare professional
if you:
-
have or had liver
disease
-
have breathing
problems when you sleep (severe sleep apnea) or a lung disease
called severe chronic obstructive pulmonary disease (COPD).
Rozerem is not recommended if you have these problems.
-
are trying to become
pregnant, already pregnant, or are breastfeeding
Can Other
Medicines or Food Affect Rozerem?
Rozerem and certain other medicines can
interact with each other. Tell your healthcare professional
about all the medicines you take including prescription and
non-prescription medicines, vitamins, and herbal supplements.
Some medicines may affect how Rozerem works or Rozerem may
affect how your other medicines work. Know the medicines you
take. Keep a list of them with you to show your healthcare
professional.
Especially, tell your healthcare
professional if you take:
- fluvoxamine
- rifampin (Rifadin)
- ketoconazole (Nizoral)
- fluconazole (Diflucan)
Tell your healthcare
provider if you drink alcohol. Alcohol may increase the side
effects with Rozerem.
How
Should I Take Rozerem?
Effects of Other Drugs on ROZEREM Metabolism
Fluvoxamine (strong CYP1A2 inhibitor): When fluvoxamine 100 mg twice
daily was administered for 3 days prior to single-dose co-administration of
ROZEREM 16 mg and fluvoxamine, the AUC0-inf for ramelteon increased
approximately 190-fold, and the Cmax increased approximately 70-fold,
compared to ROZEREM administered alone. ROZEREM should not be used
in combination with fluvoxamine (See WARNINGS). Other less potent
CYP1A2 inhibitors have not been adequately studied. ROZEREM should be
administered with caution to patients taking less strong CYP1A2 inhibitors.
Rifampin (strong CYP enzyme inducer): Administration of rifampin 600 mg
once daily for 11 days resulted in a mean decrease of approximately 80%
(40% to 90%) in total exposure to ramelteon and metabolite M-II, (both
AUC0-inf and Cmax) after a single 32 mg dose of ROZEREM. Efficacy may be
reduced when ROZEREM is used in combination with strong CYP enzyme
inducers such as rifampin.
Ketoconazole (strong CYP3A4 inhibitor): The AUC0-inf and Cmax of ramelteon
increased by approximately 84% and 36%, respectively, when a single
16 mg dose of ROZEREM was administered on the fourth day of ketoconazole
200 mg twice daily administration, compared to administration of
ROZEREM alone. Similar increases were seen in M-II pharmacokinetic
variables. ROZEREM should be administered with caution in subjects taking
strong CYP3A4 inhibitors such as ketoconazole.
Fluconazole (strong CYP2C9 inhibitor): The total and peak systemic exposure
(AUC0-inf and Cmax) of ramelteon after a single 16 mg dose of ROZEREM
was increased by approximately 150% when administered with fluconazole.
Similar increases were also seen in M-II exposure. ROZEREM should be
administered with caution in subjects taking strong CYP2C9 inhibitors such
as fluconazole.
Interaction studies of concomitant administration of ROZEREM with fluoxetine
(CYP2D6 inhibitor), omeprazole (CYP1A2 inducer/CYP2C19 inhibitor),
theophylline (CYP1A2 substrate), and dextromethorphan (CYP2D6 substrate)
did not produce clinically meaningful changes in either peak or total
exposures to ramelteon or the M-II metabolite.
Effects of ROZEREM on Metabolism of Other Drugs
Concomitant administration of ROZEREM with omeprazole (CYP2C19 substrate),
dextromethorphan (CYP2D6 substrate), midazolam (CYP3A4 substrate),
theophylline (CYP1A2 substrate), digoxin (p-glycoprotein
substrate), and warfarin (CYP2C9 [S]/CYP1A2 [R] substrate) did not
produce clinically meaningful changes in peak and total exposures to
these drugs.
Effect of Alcohol on Rozerem
Alcohol: With single-dose, daytime co-administration of ROZEREM 32 mg
and alcohol (0.6 g/kg), there were no clinically meaningful or statistically
significant effects on peak or total exposure to ROZEREM. However, an
additive effect was seen on some measures of psychomotor performance
(i.e., the Digit Symbol Substitution Test, the Psychomotor Vigilance Task
Test, and a Visual Analog Scale of sedation) at some post-dose time points.
No additive effect was seen on the Delayed Word Recognition Test. Because
alcohol by itself impairs performance, and the intended effect of ROZEREM
is to promote sleep, patients should be cautioned not to consume alcohol
when using ROZEREM.
Drug/Laboratory Test Interactions
ROZEREM is not known to interfere with commonly used clinical laboratory
tests. In addition, in vitro data indicate that ramelteon does not cause falsepositive
results for benzodiazepines, opiates, barbiturates, cocaine, cannabinoids,
or amphetamines in two standard urine drug screening methods
in vitro.
Carcinogenesis, Mutagenesis, and Impairment of Fertility
Carcinogenesis
In a two-year carcinogenicity study, B6C3F1 mice were administered
ramelteon at doses of 0, 30, 100, 300, or 1000 mg/kg/day by oral gavage.
Male mice exhibited a dose-related increase in the incidence of hepatic
tumors at dose levels =100 mg/kg/day including hepatic adenoma, hepatic
carcinoma, and hepatoblastoma. Female mice developed a dose-related
increase in the incidence of hepatic adenomas at dose levels = 300 mg/kg/day
and hepatic carcinoma at the 1000 mg/kg/day dose level. The no-effect level
for hepatic tumors in male mice was 30 mg/kg/day (103-times and 3-times
the therapeutic exposure to ramelteon and the active metabolite M-II,
respectively, at the maximum recommended human dose [MRHD] based on
an area-under-the-curve [AUC] comparison). The no-effect level for hepatic
tumors in female mice was 100 mg/kg/day (827-times and 12-times the
therapeutic exposure to ramelteon and M-II, respectively, at the MRHD
based on AUC).
In a two-year carcinogenicity study conducted in the Sprague-Dawley rat,
male and female rats were administered ramelteon at doses of 0, 15, 60,
250 or 1000 mg/kg/day by oral gavage. Male rats exhibited a dose-related
increase in the incidence of hepatic adenoma and benign Leydig cell tumors
of the testis at dose levels = 250 mg/kg/day and hepatic carcinoma at the
1000 mg/kg/day dose level. Female rats exhibited a dose-related increase in
the incidence of hepatic adenoma at dose levels = 60 mg/kg/day and
hepatic carcinoma at the 1000 mg/kg/day dose level. The no-effect level
for hepatic tumors and benign Leydig cell tumors in male rats was
60 mg/kg/day (1,429-times and 12-times the therapeutic exposure to
ramelteon and M-II, respectively, at the MRHD based on AUC). The noeffect
level for hepatic tumors in female rats was 15 mg/kg/day (472-times
and 16-times the therapeutic exposure to ramelteon and M-II, respectively,
at the MRHD based on AUC).
The development of hepatic tumors in rodents following chronic treatment
with non-genotoxic compounds may be secondary to microsomal enzyme
induction, a mechanism for tumor generation not thought to occur in
humans. Leydig cell tumor development following treatment with non-genotoxic
compounds in rodents has been linked to reductions in circulating
testosterone levels with compensatory increases in luteinizing hormone
release, which is a known proliferative stimulus to Leydig cells in the rat
testis. Rat Leydig cells are more sensitive to the stimulatory effects of
luteinizing hormone than human Leydig cells. In mechanistic studies conducted
in the rat, daily ramelteon administration at 250 and 1000 mg/kg/day
for 4 weeks was associated with a reduction in plasma testosterone levels.
In the same study, luteinizing hormone levels were elevated over a 24 hour
period after the last ramelteon treatment; however, the durability of this
luteinizing hormone finding and its support for the proposed mechanistic
explanation was not clearly established.
Although the rodent tumors observed following ramelteon treatment
occurred at plasma levels of ramelteon and M-II in excess of mean clinical
plasma concentrations at the MRHD, the relevance of both rodent hepatic
tumors and benign rat Leydig cell tumors to humans is not known.
Mutagenesis
Ramelteon was not genotoxic in the following: in vitro bacterial reverse
mutation (Ames) assay; in vitro mammalian cell gene mutation assay using
Because clinical trials are conducted under widely varying conditions,
adverse reaction rates observed in the clinical trials of a drug cannot be
directly compared to rates in clinical trials of other drugs, and may not
reflect the rates observed in practice. The adverse reaction information from
clinical trials does, however, provide a basis for identifying the adverse
events that appear to be related to drug use and for approximating rates.
Table 1. Incidence (% of subjects) of Treatment-Emergent
Adverse Events in Phase 1-3 Studies
Ramelteon
MedDRA Placebo 8 mg
Preferred Term (n=1370) (n=1250)
Headache NOS 7% 7%
Somnolence 3% 5%
Fatigue 2% 4%
Dizziness 3% 5%
Nausea 2% 3%
Insomnia 2% 3%
exacerbated
Upper respiratory 2% 3%
tract infection NOS
Diarrhea NOS 2% 2%
Myalgia 1% 2%
Depression 1% 2%
Dysgeusia 1% 2%
Arthralgia 1% 2%
Influenza 0 1%
Blood Cortisol
Decreased 0 1%
DRUG ABUSE AND DEPENDENCE
ROZEREM is not a controlled substance.
Human Data. See the CLINICAL TRIALS section, Studies Pertinent to
Safety Concerns for Sleep-Promoting Agents, for the results of human
laboratory abuse potential trials with ROZEREM.
Animal Data. Ramelteon did not produce any signals from animal behavioral
studies indicating that the drug produces rewarding effects. Monkeys did
not self-administer ramelteon and the drug did not induce a conditioned
place preference in rats. There was no generalization between ramelteon
and midazolam. Ramelteon did not affect rotorod performance, an indicator
of disruption of motor function, and it did not potentiate the ability of
diazepam to interfere with rotorod performance.
Discontinuation of ramelteon in animals or in humans after chronic administration
did not produce withdrawal signs. Ramelteon does not appear to
produce physical dependence.
OVERDOSAGE
Signs and Symptoms
No cases of ROZEREM overdose have been reported during clinical development.
ROZEREM was administered in single doses up to 160 mg in an abuse liability
trial. No safety or tolerability concerns were seen.
Recommended Treatment
General symptomatic and supportive measures should be used, along with
immediate gastric lavage where appropriate. Intravenous fluids should be
administered as needed. As in all cases of drug overdose, respiration,
pulse, blood pressure, and other appropriate vital signs should be monitored,
and general supportive measures employed.
Hemodialysis does not effectively reduce exposure to ROZEREM. Therefore,
the use of dialysis in the treatment of overdosage is not appropriate.
Poison Control Center
As with the management of all overdosage, the possibility of multiple drug
ingestion should be considered. The physician may contact a poison control
center for current information on the management of overdosage.
DOSAGE AND ADMINISTRATION
The recommended dose of ROZEREM is 8 mg taken within 30 minutes of
going to bed. It is recommended that ROZEREM not be taken with or immediately
after a high fat meal.
ROZEREM should not be used in subjects with severe hepatic impairment.
ROZEREM should be used with caution in patients with moderate hepatic
impairment.
ROZEREM should not be used in combination with fluvoxamine. ROZEREM
should be used with caution in patients taking other CYP1A2 inhibiting
drugs (see PRECAUTIONS: Drug Interactions).
HOW SUPPLIED
ROZEREM is available as round, pale orange-yellow, film-coated, 8 mg
tablets, with “TAK” and “RAM-8” printed on one side, in the following
quantities:
NDC 64764-805-30 Bottles of 30
NDC 64764-805-10 Bottles of 100
NDC 64764-805-50 Bottles of 500
Store at 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F)
[see USP controlled room temperature]. Keep container tightly closed and
protected from moisture and humidity.
Rx only.
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