CYCLOBENZAPRINE HYDROCHLORIDE
- cyclobenzaprine hydrochloride tablet, film coated
Lake Erie Medical DBA Quality Care Product LLC
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Cyclobenzaprine hydrochloride is a white, crystalline tricyclic amine salt with the empirical formula C20H21N·HCl and a molecular weight of 311.9. It has a melting point of 217°C, and a pKa of 8.47 at 25°C. It is freely soluble in water and alcohol, sparingly soluble in isopropanol, and insoluble in hydrocarbon solvents. If aqueous solutions are made alkaline, the free base separates
Analysis of the data from controlled studies shows that cyclobenzaprine hydrochloride produces clinical improvement whether or not sedation occurs.
**VALIUM® (diazepam, Roche)
Surveillance Program
A post-marketing surveillance program was carried out in 7607 patients with acute musculoskeletal disorders, and included 297 patients treated with cyclobenzaprine hydrochloride 10 mg for 30 days or longer. The overall effectiveness of cyclobenzaprine hydrochloride was similar to that observed in the double-blind controlled studies; the overall incidence of adverse effects was less (see ADVERSE REACTIONS).
Hypersensitivity to any component of this product.
Concomitant use of monoamine oxidase (MAO) inhibitors or within 14 days after their discontinuation. Hyperpyretic crisis seizures, and deaths have occurred in patients receiving cyclobenzaprine (or structurally similar tricyclic antidepressants) concomitantly with MAO inhibitor drugs.
Acute recovery phase of myocardial infarction, and patients with arrhythmias, heart block or conduction disturbances, or congestive heart failure.
Hyperthyroidism.
Cyclobenzaprine is closely related to the tricyclic antidepressants, e.g., amitriptyline and imipramine. In short term studies for indications other than muscle spasm associated with acute musculoskeletal conditions, and usually at doses somewhat greater than those recommended for skeletal muscle spasm, some of the more serious central nervous system reactions noted with the tricyclic antidepressants have occurred (see WARNINGS, below, and ADVERSE REACTIONS).
Tricyclic antidepressants have been reported to produce arrhythmias, sinus tachycardia, prolongation of the conduction time leading to myocardial infarction and stroke. Cyclobenzaprine hydrochloride may enhance the effects of alcohol, barbiturates, and other CNS depressants.
General
Because of its atropine-like action, cyclobenzaprine hydrochloride should be used with caution in patients with a history of urinary retention, angle-closure glaucoma, increased intraocular pressure, and in patients taking anticholinergic medication.
Impaired Hepatic FunctionThe plasma concentration of cyclobenzaprine is increased in patients with hepatic impairment (see CLINICAL PHARMACOLOGY, Pharmacokinetics, Hepatic Impairment). These patients are generally more susceptible to drugs with potentially sedating effects, including cyclobenzaprine. Cyclobenzaprine hydrochloride should be used with caution in subjects with mild hepatic impairment starting with a 5 mg dose and titrating slowly upward. Due to the lack of data in subjects with more severe hepatic insufficiency, the use of cyclobenzaprine hydrochloride in subjects with moderate to severe impairment is not recommended.
Information for Patients
Cyclobenzaprine hydrochloride, especially when used with alcohol or other CNS depressants, may impair mental and/or physical abilities required for performance of hazardous tasks, such as operating machinery or driving a motor vehicle. In the elderly, the frequency and severity of adverse events associated with the use of cyclobenzaprine, with or without concomitant medications, is increased. In elderly patients, cyclobenzaprine hydrochloride should be initiated with a 5 mg dose and titrated slowly upward.
Drug Interactions
Cyclobenzaprine hydrochloride may have life-threatening interactions with MAO inhibitors. (See CONTRAINDICATIONS.)
Cyclobenzaprine hydrochloride may enhance the effects of alcohol, barbiturates, and other CNS depressants.
Tricyclic antidepressants may block the antihypertensive action of guanethidine and similarly acting compounds.
Tricyclic antidepressants may enhance the seizure risk in patients taking tramadol.†
†ULTRAM® (tramadol HCl tablets, Ortho-McNeil Pharmaceutical)
ULTRACET® (tramadol HCl and acetaminophen tablets, Ortho-McNeil Pharmaceutical)
Carcinogenesis, Mutagenesis, Impairment of FertilityPregnancy
Pregnancy Category B: Reproduction studies have
been performed in rats, mice and rabbits at doses up to 20 times the human dose,
and have revealed no evidence of impaired fertility or harm to the fetus due to
cyclobenzaprine hydrochloride. There are, however, no adequate and
well-controlled studies in pregnant women. Because animal reproduction studies
are not always predictive of human response, this drug should be used during
pregnancy only if clearly needed.
Nursing Mothers
It is not known whether this drug is excreted in human milk. Because cyclobenzaprine is closely related to the tricyclic antidepressants, some of which are known to be excreted in human milk, caution should be exercised when cyclobenzaprine hydrochloride is administered to a nursing woman.
Pediatric Use
Safety and effectiveness of cyclobenzaprine hydrochloride in pediatric patients below 15 years of age have not been established.
The plasma concentration of cyclobenzaprine is increased in the elderly (see CLINICAL PHARMACOLOGY, Pharmacokinetics, Elderly). The elderly may also be more at risk for CNS adverse events such as hallucinations and confusion, cardiac events resulting in falls or other sequelae, drug-drug and drug-disease interactions. For these reasons, in the elderly, cyclobenzaprine should be used only if clearly needed. In such patients cyclobenzaprine hydrochloride should be initiated with a 5 mg dose and titrated slowly upward.
5 mg studies (incidence of > 3% on cyclobenzaprine hydrochloride 5 mg):
| Cyclobenzaprine HCl 5 mg N=464 | Cyclobenzaprine HCl 10 mg N=249 | Placebo N=469 |
Drowsiness | 29% | 38% | 10% |
Dry Mouth | 21% | 32% | 7% |
Fatigue | 6% | 6% | 3% |
Headache | 5% | 5% | 8% |
‡Note: Cyclobenzaprine hydrochloride 10 mg data are from one clinical trial.
Cyclobenzaprine hydrochloride 5 mg and placebo data are from two studies.
| Clinical Studies
With
Cyclobenzaprine HCl 10 mg | Surveillance Progam
With Cyclobenzaprine HCl 10 mg |
Drowsiness | 39% | 16% |
Dry Mouth | 27% | 7% |
Dizziness | 11% | 3% |
Body as a Whole: Syncope; malaise.
Cardiovascular: Tachycardia; arrhythmia; vasodilatation; palpitation; hypotension.
Digestive: Vomiting; anorexia; diarrhea; gastrointestinal pain; gastritis; thirst; flatulence; edema of the tongue; abnormal liver function and rare reports of hepatitis, jaundice and cholestasis.
Hypersensitivity: Anaphylaxis; angioedema; pruritus; facial edema; urticaria; rash.
Musculoskeletal: Local weakness.
Nervous System and Psychiatric: Seizures, ataxia; vertigo; dysarthria; tremors; hypertonia; convulsions; muscle twitching; disorientation; insomnia; depressed mood; abnormal sensations; anxiety; agitation; psychosis, abnormal thinking and dreaming; hallucinations; excitement; paresthesia; diplopia.
Skin: Sweating.
Special Senses: Ageusia; tinnitus.
Urogenital: Urinary frequency and/or retention.
Causal Relationship Unknown
Other reactions, reported rarely for cyclobenzaprine hydrochloride under circumstances where a causal relationship could not be established or reported for other tricyclic drugs, are listed to serve as alerting information to physicians:
Body as a whole: Chest pain; edema.
Cardiovascular: Hypertension; myocardial infarction; heart block; stroke.
Digestive: Paralytic ileus, tongue discoloration; stomatitis; parotid swelling.
Endocrine: Inappropriate ADH syndrome.
Hematic and Lymphatic: Purpura; bone marrow depression; leukopenia; eosinophilia; thrombocytopenia.
Metabolic, Nutritional and Immune: Elevation and lowering of blood sugar levels; weight gain or loss.
Musculoskeletal: Myalgia.
Nervous System and Psychiatric: Decreased or increased libido; abnormal gait; delusions; aggressive behavior; paranoia; peripheral neuropathy; Bell's palsy; alteration in EEG patterns; extrapyramidal symptoms.
Respiratory: Dyspnea.
Skin: Photosensitization; alopecia.
Urogenital: Impaired urination; dilatation of urinary tract; impotence; testicular swelling; gynecomastia; breast enlargement; galactorrhea.
DRUG ABUSE AND DEPENDENCE
DOSAGE AND ADMINISTRATION
For most patients, the recommended dose of cyclobenzaprine hydrochloride is 5 mg three times a day. Based on individual patient response, the dose may be increased to 10 mg three times a day. Use of cyclobenzaprine hydrochloride for periods longer than two or three weeks is not recommended. (see INDICATIONS AND USAGE).
Less frequent dosing should be considered for hepatically impaired or elderly patients (see PRECAUTIONS, Impaired Hepatic Function, and Use in the Elderly).
HOW SUPPLIED
The tablets are supplied as follows:
100 count bottle NDC 65162-541-10
500 count bottle NDC 65162-541-50
1000 count bottle NDC 65162-541-11
Cyclobenzaprine hydrochloride 10 mg tablets are supplied as butterscotch yellow, round, film-coated convex tablets, debossed with "AN41" on one side and plain on the other side.
tore at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C - 30°C (59°F - 86°F). [See USP Controlled Room Temperature]. This is a bulk package. Dispense contents with a child-resistant closure (as required) and in a tight, light-resistant container as defined in the USP.
KEEP THIS AND ALL MEDICATION OUT OF THE REACH OF CHILDREN.
Manufactured by
Amneal Pharmaceuticals
Paterson, New Jersey 07504
Distributed by
Amneal Pharmaceuticals
Glasgow, Kentucky 42141
MF# 306
Rev.: 01-2008
CYCLOBENZAPRINE HYDROCHLORIDE
cyclobenzaprine hydrochloride tablet, film coated |
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Labeler - Lake Erie Medical DBA Quality Care Product LLC (831276758) |
Establishment | |||
Name | Address | ID/FEI | Business Operations |
Lake Erie Medical DBA Quality Care Products LLC | 831276758 | repack(49999-034) |