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Pronunciation |
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(si
BYOO tra
meen) |
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U.S. Brand
Names |
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Meridia™ |
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Generic
Available |
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No |
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Synonyms |
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Sibutramine Hydrochloride Monohydrate |
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Pharmacological Index |
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Anorexiant |
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Use |
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Management of obesity, including weight loss and maintenance of weight loss,
and should be used in conjunction with a reduced calorie diet
5'0"
140 lb: BMI = 27
150 lb: BMI = 29
160 lb: BMI = 31
170 lb: BMI = 33
180 lb: BMI = 35
190 lb: BMI = 37
200 lb: BMI = 39
210 lb: BMI = 41
220 lb: BMI = 43
230 lb: BMI = 45
240 lb: BMI = 47
250 lb: BMI = 49
5'3"
140 lb: BMI = 25
150 lb: BMI = 27
160 lb: BMI = 28
170 lb: BMI = 30
180 lb: BMI = 32
190 lb: BMI = 34
200 lb: BMI = 36
210 lb: BMI = 37
220 lb: BMI = 39
230 lb: BMI = 41
240 lb: BMI = 43
250 lb: BMI = 44
5'6"
140 lb: BMI = 23
150 lb: BMI = 24
160 lb: BMI = 26
170 lb: BMI = 28
180 lb: BMI = 29
190 lb: BMI = 31
200 lb: BMI = 32
210 lb: BMI = 34
220 lb: BMI = 36
230 lb: BMI = 37
240 lb: BMI = 39
250 lb: BMI = 40
5'9"
140 lb: BMI = 21
150 lb: BMI = 22
160 lb: BMI = 24
170 lb: BMI = 25
180 lb: BMI = 27
190 lb: BMI = 28
200 lb: BMI = 30
210 lb: BMI = 31
220 lb: BMI = 33
230 lb: BMI = 34
240 lb: BMI = 36
250 lb: BMI = 37
6'0"
140 lb: BMI = 19
150 lb: BMI = 20
160 lb: BMI = 22
170 lb: BMI = 23
180 lb: BMI = 25
190 lb: BMI = 26
200 lb: BMI = 27
210 lb: BMI = 29
220 lb: BMI = 30
230 lb: BMI = 31
240 lb: BMI = 33
250 lb: BMI = 34
6'3"
140 lb: BMI = 18
150 lb: BMI = 19
160 lb: BMI = 20
170 lb: BMI = 21
180 lb: BMI = 23
190 lb: BMI = 24
200 lb: BMI = 25
210 lb: BMI = 26
220 lb: BMI = 28
230 lb: BMI = 29
240 lb: BMI = 30
250 lb: BMI = 31 |
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Restrictions |
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CIV; Recommended only for obese patients with a body mass index greater than
or equal to 30 kg/m2 or greater than or equal to 27 kg/m2
in the presence of other risk factors such as hypertension, diabetes, and/or
dyslipidemia |
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Pregnancy Risk
Factor |
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C |
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Contraindications |
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Hypersensitivity to sibutramine or any component; during or within 2 weeks of
MAO inhibitors (eg, phenelzine, selegiline) or concomitant centrally-acting
appetite suppressants; anorexia nervosa; uncontrolled or poorly controlled
hypertension; congestive heart failure; coronary heart disease; conduction
disorders (arrhythmias); stroke |
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Warnings/Precautions |
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Use with caution in severe renal impairment or severe hepatic dysfunction,
seizure disorder, hypertension, gallstones, narrow-angle glaucoma, nursing
mothers, elderly patients. Primary pulmonary hypertension (PPH), a rare and
frequently fatal pulmonary disease, has been reported to occur in patients
receiving other agents with serotonergic activity which have been used as
anorexiants. Although not reported in clinical trials, it is possible that
sibutramine may share this potential, and patients should be monitored
closely. |
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Adverse
Reactions |
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>10%
Central nervous system: Headache, insomnia
Gastrointestinal: Anorexia, xerostomia, constipation
Respiratory: Rhinitis
1% to 10%
Cardiovascular: Tachycardia, vasodilation, hypertension, palpitations, chest
pain, edema
Central nervous system: Migraine, dizziness, nervousness, anxiety,
depression, somnolence, CNS stimulation, emotional liability
Dermatologic: Rash
Endocrine & metabolic: Dysmenorrhea
Gastrointestinal: Increased appetite, nausea, dyspepsia, gastritis, vomiting,
taste perversion, abdominal pain
Neuromuscular & skeletal: Weakness, arthralgia, back pain
Respiratory: Pharyngitis, sinusitis, cough, laryngitis
Miscellaneous: Diaphoresis, flu-like syndrome, allergic reactions, thirst
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Overdosage/Toxicology |
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There is no specific antidote; treatment should consist of general supportive
measures employed in the management of overdosage. Cautious use of beta-blockers
to control elevated blood pressure and tachycardia may be indicated; the
benefits of forced diuresis and hemodialysis remain
unknown. |
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Drug
Interactions |
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CYP3A3/4 enzyme substrate
Avoid concurrent use with other serotonergic agents such as venlafaxine,
selective serotonin reuptake inhibitors (eg, citalopram, fluoxetine,
fluvoxamine, paroxetine, sertraline), sumatriptan, dihydroergotamine, lithium,
tryptophan, some opioid/analgesics (eg, meperidine, tramadol), serotonin
syndrome may result
Dextromethorphan, MAO inhibitors and other drugs that can raise the blood
pressure can worsen the possibility of sibutramine-associated cardiovascular
complications (eg, decongestants, centrally acting weight loss products,
amphetamines, and amphetamine-like compounds)
Possible interaction with ketoconazole, erythromycin, and other agents
metabolized by the CYP3A4 enzyme system |
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Mechanism of
Action |
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Sibutramine blocks the neuronal uptake of norepinephrine and, to a lesser
extent, serotonin and dopamine |
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Usual Dosage |
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Adults greater than or equal to 16 years: Initial: 10 mg once daily; after 4
weeks may titrate up to 15 mg once daily as needed and
tolerated |
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Dietary
Considerations |
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Avoid concurrent excess alcohol ingestion; sibutramine, as an appetite
suppressant, is the most effective when combined with a low calorie diet and
behavior modification counseling |
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Monitoring
Parameters |
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Do initial blood pressure and heart rate evaluation and then monitor
regularly during therapy. If patient has sustained increases in either blood
pressure or pulse rate, consider discontinuing or reducing the dose of the
drug. |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
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Take exactly as directed (do not increase dose or frequency without
consulting prescriber). Take with or without meals; if gastric distress occurs,
may be taken with meals (do not take at bedtime). Avoid alcohol, caffeine, or
OTC medications that act as stimulants. You may experience restlessness,
dizziness, sleepiness (use caution when driving or engaging in tasks requiring
alertness until response to drug is known); experience insomnia (taking
medication early in morning may help, warm milk and quiet environment at bedtime
may help); increased appetite, nausea or vomiting (small frequent meals,
frequent mouth care may help); constipation (increased exercise, dietary fiber,
fruit, or fluid may help); diarrhea (buttermilk, boiled milk, or yogurt may
help); or altered menstrual periods (reversible). Report chest pain,
palpitations, or irregular heartbeat; excessive nervousness, excitation, or
sleepiness; back pain, muscle weakness, or tremors; CNS changes (acute headache,
aggressiveness, restlessness, excitation, sleep disturbances); menstrual pattern
changes; rash; blurred vision; runny nose, sinusitis, cough, or difficulty
breathing. Pregnancy/breast-feeding precautions: Inform prescriber if
you are or intend to be pregnant. Breast-feeding is not
recommended. |
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Dosage Forms |
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Capsule, as hydrochloride: 5 mg, 10 mg, 15 mg |
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References |
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Colchamiro R, "FDA Clears Obesity Drug," Am Druggist, 1998, 12.
King DJ and Devaney N,
"Clinical Pharmacology of Sibutramine Hydrochloride (BTS 54524), A New Antidepressant, in Healthy Volunteers,"
Br J Clin Pharmacol, 1988, 26(5):607-11.
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