Cyclobenzaprine StatPearls NCBI Bookshelf
The incidence of drowsiness, the most frequent adverse reaction, was similar with both drugs. 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.
Data sources include IBM Watson Micromedex (updated 3 Sep 2023), Cerner Multum™ (updated 28 Aug 2023), ASHP (updated 10 Aug 2023) and others. Cyclobenzaprine reduced or abolished skeletal muscle hyperactivity in several animal models. Animal studies indicate that cyclobenzaprine does not act at the neuromuscular junction or directly on skeletal muscle. Evidence suggests that the net effect of cyclobenzaprine is a reduction of tonic somatic motor activity, influencing both gamma (γ) and alpha (α) motor systems. As management of overdose is complex and changing, it is recommended that the physician contact a poison control center for current information on treatment. In patients with CNS depression, early intubation is advised because of the potential for abrupt deterioration.
- Cyclobenzaprine caused slight to moderate increase in heart rate in animals.
- Muscle spasm, local pain and tenderness, limitation of motion, and restriction in activities of daily living were evaluated.
- Tricyclic antidepressants have been reported to produce arrhythmias, sinus tachycardia, prolongation of the conduction time leading to myocardial infarction and stroke.
This should include large volume gastric lavage followed by activated charcoal. If consciousness is impaired, the airway should be secured prior to lavage and emesis is contraindicated. Less frequent dosing should be considered for hepatically impaired or elderly patients (see PRECAUTIONS, Impaired Hepatic Function, and Use in the Elderly). Cyclobenzaprine caused slight to moderate increase in heart rate in animals. Cyclobenzaprine HCl relieves skeletal muscle spasm of local origin without interfering with muscle function.
The patient should rinse their mouth to ensure that they have swallowed all the contents. Eight double-blind controlled clinical studies were performed in 642 patients comparing FLEXERIL 10 mg, diazepam, and placebo. Muscle spasm, local pain and tenderness, limitation of motion, and restriction in activities of daily living were evaluated. In three of these studies there was a significantly greater improvement with FLEXERIL than with diazepam, while in the other studies the improvement following both treatments was comparable.
It helps relieve pain, stiffness, and discomfort caused by strains, sprains, or injuries to your muscles. However, this medicine does not take the place of rest, exercise or physical therapy, or other treatment that your doctor may recommend for your medical problem. Cyclobenzaprine acts on the central nervous system (CNS) to produce its muscle relaxant effects. Its actions on the CNS may also cause some of this medicine’s side effects. The efficacy of FLEXERIL 5 mg was demonstrated in two seven-day, double-blind, controlled clinical trials enrolling 1405 patients.
One study compared FLEXERIL 5 mg and 10 mg t.i.d. to placebo; and a second study compared FLEXERIL 5 mg and 2.5 mg t.i.d. to placebo. Primary endpoints for both trials were determined by patient-generated data and included global impression of change, medication helpfulness, and relief from which is stronger zanaflex or flexeril starting backache. Each endpoint consisted of a score on a 5-point rating scale (from 0 or worst outcome to 4 or best outcome). The plasma concentration of cyclobenzaprine is increased in patients with hepatic impairment (see CLINICAL PHARMACOLOGY, Pharmacokinetics, Hepatic Impairment).
Multiple drug ingestion (including alcohol) is common in deliberate cyclobenzaprine overdose. As management of overdose is complex and changing, it is recommended that the physician contact a poison control center for current information on treatment. Signs and symptoms of toxicity may develop rapidly after cyclobenzaprine overdose; therefore, hospital monitoring is required as soon as possible. The acute oral LD50 of FLEXERIL is approximately 338 and 425 mg/kg in mice and rats, respectively. The plasma concentration of cyclobenzaprine is increased in the elderly (see CLINICAL PHARMACOLOGY, Pharmacokinetics, Elderly).
For most patients, the recommended dose of FLEXERIL 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 FLEXERIL for periods longer than two or three weeks is not recommended. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment.
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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 FLEXERIL is administered to a nursing woman. Tricyclic antidepressants have been reported to produce arrhythmias, sinus tachycardia, prolongation of the conduction time leading to myocardial infarction and stroke. Our Flexeril (cyclobenzaprine) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. By starting Dolor-Drdelgadocidranes.com, My aim is to provides accurate medical information to our readers, in an interesting manner.
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Tricyclic antidepressants may block the antihypertensive action of guanethidine and similarly acting compounds. Tell your doctor if you are pregnant or plan to become pregnant during treatment with Flexeril. It is unknown if Flexeril passes into breast milk or if it could harm a nursing baby.