Miosan Caf

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Miosan Caf

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Miosan Caf

Property Description
Active ingredients Cyclobenzaprine Hydrochloride and Caffeine
Form Oral tablet (film-coated)
Pharmacological class Combined Centrally Acting Skeletal Muscle Relaxant and CNS Stimulant
General purpose Relief of acute muscle spasm and related pain
Origin Synthetic

What Type of Medicine is Miosan Caf?

Miosan Caf is a prescription-only, fixed-dose combination product taken by the oral route of administration. It is classified pharmacologically as a medication that contains both a skeletal muscle relaxant and a Central Nervous System (CNS) stimulant. The formulation's distinct feature is the combination of Cyclobenzaprine, a tricyclic derivative, with Caffeine, a xanthine derivative.

This dual-component design differentiates Miosan Caf from single-agent relaxants. The combination is engineered to provide relief from painful muscle tightening, a core mechanism that is clinically recognized for reducing muscle spasm.

What is the Composition and Form of Miosan Caf?

The active constituents of Miosan Caf are Cyclobenzaprine Hydrochloride and Caffeine, both of which are highly refined or synthetic compounds. The product is manufactured as an oral tablet, typically film-coated, requiring the use of standard solid pharmaceutical excipients.

Cyclobenzaprine is recognized for its utility in treating muscle spasm. The two active ingredients are fixed in their ratio within the tablet. This ensures that the primary relief of muscle hyperactivity is delivered alongside the specific dose of caffeine intended to manage the sedation commonly associated with the centrally acting muscle relaxant.

What is Miosan Caf Generally Used For?

Miosan Caf is generally intended to relieve the discomfort and stiffness associated with acute painful musculoskeletal conditions where involuntary muscle spasm is present. A typical scenario involves using the medication to manage the pain resulting from an acute muscle strain or injury, acting as an adjunct to rest and physical therapy. The general benefit of this combined approach is the establishment of a synergistic effect. This unique feature allows for effective muscle relaxation while simultaneously helping to counteract the sedative effects, supporting the patient's ability to remain functionally alert during the short-term course of treatment.

Regulatory References

  1. Central Nervous System (CNS) stimulant
  2. Caffeine
  3. xanthine derivative
  4. muscle spasm
  5. synergistic effect

What side effects are possible with Miosan Caf?

Possible Side Effects and Safety Information for Miosan Caf

The official safety profile for Miosan Caf, a combination of Cyclobenzaprine and Caffeine, is derived from governmental regulatory documents and classifies potential adverse reactions by frequency and physiological system.

Frequency and System-Organ Class

The most frequently reported adverse effects are primarily linked to the Nervous System and Gastrointestinal systems.

Classification Common Adverse Reactions (Based on Regulatory Labeling)
Very Common / Common Drowsiness, dry mouth, dizziness, fatigue, headache, nervousness, constipation, nausea, blurred vision, dyspepsia.
Less Common / Rare Cardiac events (tachycardia, arrhythmias), confusion, anxiety, tremor, seizures, and hypersensitivity reactions (rash, swelling).

Adverse effects, particularly drowsiness and dry mouth, are often more frequent at the start of therapy and tend to lessen with continued use, a time-related pattern documented in regulatory information.


Serious Adverse Reactions and Safety Constraints

The regulatory label documents the potential for rare but serious adverse reactions, notably Serotonin Syndrome, especially when used with other serotonergic agents. Serious risks related to the Cardiac System, such as potentially life-threatening arrhythmias, are also documented due to Cyclobenzaprine's chemical relationship to tricyclic antidepressants.

Use of Miosan Caf is strictly constrained in certain patient groups and conditions. The medication is contraindicated in individuals with severe hepatic impairment, specific pre-existing heart conditions (e.g., congestive heart failure, certain heart block), and with concurrent use of, or within 14 days of discontinuing, a Monoamine Oxidase Inhibitor (MAOI). Older adults are documented to have an increased risk of adverse CNS effects such as confusion and dizziness.

This official safety documentation defines the medicine's risk profile, highlighting both common, expected effects and rare, serious constraints that govern its prescribed use.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the overdose profile of Miosan Caf, a combination of cyclobenzaprine and caffeine, by documenting specific severe clinical manifestations and mandated emergency actions.

Documented Clinical Manifestations

Overdose may present with serious effects on the Central Nervous System (CNS) and Cardiovascular System.

Physiological System Documented Manifestations
CNS Somnolence, Confusion, Agitation, Hallucinations, Tremor, Seizures, Coma.
Cardiovascular Tachycardia, Arrhythmias (Ventricular and Supraventricular), Hypotension, QRS widening, Cardiac Arrest.

Serious life-threatening outcomes officially cited include Serotonin Syndrome, associated with the cyclobenzaprine component, and Severe Respiratory Depression. Other documented signs are Hyperpyrexia, Vomiting, and Rhabdomyolysis.

Required Emergency Actions

Regulatory agencies mandate that all individuals with suspected overdose seek immediate medical attention. If severe or life-threatening symptoms occur, contact emergency services immediately.

Official management procedures require Symptomatic and supportive treatment and Continuous ECG monitoring due to cardiac risk. Hospital monitoring is required in all suspected cases. It is officially noted that no specific antidote is known for the cyclobenzaprine component. Special consideration is noted for Elderly patients and Pediatric patients, who are cited as having increased susceptibility to severe effects.

Therapeutic Uses of Miosan Caf

Miosan Caf may be used to provide short-term symptomatic support for adults experiencing acute, painful muscle issues. It is applied across domains where additional symptomatic support is needed and is generally part of a complete treatment approach that includes rest and physical therapy.

The core therapeutic domain is the relief of muscle spasm associated with acute, painful musculoskeletal conditions. The medication is relevant for managing symptoms of increased neurological or muscular activity and those that create noticeable physiological strain, such as painful muscle spasms, stiffness, and localized discomfort.

Symptom Relief and Dual Benefit

Miosan Caf is commonly used in conditions characterized by periods of heightened symptoms like acute muscle strains, sprains, or back pain. The medication is commonly used for easing the muscle spasm and the reduction of associated discomfort. The combination of ingredients means the medication may assist in managing the potential for excessive drowsiness, a symptom related to heightened physiological activity that may be associated with muscle relaxants. This composition supports the patient during difficult episodes by easing distress and assists with maintaining functional stability when symptoms interfere with routine activities.

“The intent of Miosan Caf is to offer symptomatic relief in acute episodes, and may help patients cope more steadily with symptom fluctuations.”

Quick Fact: Relief for Acute Musculoskeletal Spasm Miosan Caf is generally applied in settings where short-term symptomatic assistance is needed to may help ease the overall symptom burden.

Regulatory References

  1. NIH DailyMed drug information

Eligibility and Restrictions for Use

Official Eligibility Profile for Miosan Caf

This medicine is approved for use in adults and adolescents 15 years of age and older experiencing muscle spasm related to acute musculoskeletal conditions. Eligibility is strictly defined by regulatory guidelines that outline specific contraindications and use restrictions based on age, physiological status, and concurrent medication use.


Absolute Contraindications

Use of Miosan Caf is strictly prohibited (contraindicated) for patients with specific cardiovascular conditions, including congestive heart failure, arrhythmias, heart block, or during the acute recovery phase following a myocardial infarction. It is also contraindicated in patients with hyperthyroidism and those with known hypersensitivity to the components. Use is strictly prohibited for individuals currently taking, or within 14 days of discontinuing, a Monoamine Oxidase (MAO) inhibitor.


Age and Condition-Based Restrictions

Safety and effectiveness have not been established for children under 15 years of age. Use is not recommended in older adults (65 years and older) due to altered drug metabolism. For patients with moderate to severe hepatic impairment, use is not recommended, and those with mild impairment require use with caution. Use is restricted for short-term periods, typically not exceeding two or three weeks. Safety is not established during pregnancy, and use is not recommended while breastfeeding.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Miosan Caf is structured around mandatory prohibitions and required co-administration precautions related to its active ingredients.

The most critical regulatory restriction is the formal contraindication against combining the cyclobenzaprine component with Monoamine Oxidase Inhibitors (MAOIs). This combination is prohibited due to the potential for severe, life-threatening reactions. A mandatory separation period of 14 days must be observed when discontinuing an MAOI before starting Miosan Caf.

Pharmacodynamic interactions include an increased risk of Serotonin Syndrome when Miosan Caf is co-administered with other serotonergic drugs (e.g., SSRIs, SNRIs). The combination with other CNS Depressants, such as alcohol or opioids, results in additive depressant effects. Official documents also note that cyclobenzaprine may reduce the effect of certain antihypertensive medications, including Guanethidine.

Pharmacokinetic interactions primarily involve metabolism. Inhibitors of CYP3A4, CYP1A2, and CYP2D6 may lead to a clinically significant increase in cyclobenzaprine's plasma concentration and overall exposure. This exposure-modifying effect is also noted in specific populations: patients with hepatic impairment are documented to exhibit approximately two-fold higher cyclobenzaprine plasma levels. Due to the caffeine component, caution is advised regarding the consumption of excessive external caffeine sources, which may result in additive central nervous system stimulant effects.

Mechanism of Action

Miosan Caf functions as an inhibitor of the enzyme Xanthine Oxidase (XO), the final enzyme in the purine catabolism pathway. The chemical structure of Miosan Caf allows it to occupy the active site of the XO enzyme, thereby blocking the catalytic conversion of hypoxanthine to xanthine, and subsequently inhibiting the conversion of xanthine to uric acid. This molecular interaction decreases the rate of uric acid biosynthesis. By limiting XO activity, Miosan Caf reduces the production of uric acid, which leads to a direct decrease in the plasma concentration of circulating urate. This system-level physiological modulation results in a reduced saturation of urate in the blood and minimizes the formation and precipitation of urate crystals within the renal tubules and other tissues. The mechanism is independent of renal tubular transport and focuses purely on biosynthetic suppression.

Dosage and Administration Information

Miosan Caf is a prescription-only, fixed-dose combination product intended for oral administration only. It is used strictly as an adjunct to non-pharmacologic measures, such as rest and physical therapy, and is taken on a standardized dosing schedule. The tablet can be administered with or without food and requires no special preparation before swallowing.

The standard frequency for Miosan Caf is three times daily (t.i.d.). The dosing regimen is governed by the Cyclobenzaprine component, where therapy is often initiated at the 5 mg dose per administration. Based on clinical context, the dose may be increased up to 10 mg per administration, but the total daily intake must not exceed 30 mg.

A core procedural constraint is the duration of therapy, which is strictly limited to short periods, typically not to exceed two to three weeks (14 to 21 days). Usage in adolescents 15 years of age and older follows the same adult dosing principles. For specific populations, including adults age 65 and over and patients with mild hepatic impairment, treatment must start with the lower 5 mg component dose and be titrated slowly. This structured protocol defines Miosan Caf as a temporary intervention, not a long-term treatment.

Recent Clinical Evidence

Miosan Caf: Recent Clinical Evidence

Clinical evidence concerning drug combinations used for musculoskeletal pain, such as the active ingredients found in Miosan Caf (cyclobenzaprine and caffeine), is continually evolving. Miosan Caf is a fixed-dose combination product used as a muscle relaxant.

Efficacy and Safety Trials

Recent clinical trials have focused on evaluating the efficacy and safety of muscle relaxant combinations, often comparing a single-agent muscle relaxant/caffeine combination (similar to Miosan Caf) to a triple combination that adds an anti-inflammatory agent (such as a non-steroidal anti-inflammatory drug, or NSAID). These studies primarily target adults experiencing acute osteomuscular pain of moderate or moderately severe intensity.

Key findings from these investigations typically center on two main outcomes:

  1. Pain Reduction: Comparing the speed and extent of pain relief, often measured using tools like the Visual Analogue Scale (VAS).
  2. Safety Profile: Monitoring the occurrence and severity of adverse events to assess the drug combination's tolerability.

One specific objective in recent Phase III clinical trials has been to determine if adding an NSAID to the cyclobenzaprine and caffeine combination provides a statistically significant superior analgesic effect in treating musculoskeletal pain when compared to the cyclobenzaprine/caffeine combination alone. Such research helps clarify the most effective and safe therapeutic regimen for patients with muscle spasms and associated pain.

General Considerations for Muscle Relaxants

Systematic reviews and meta-analyses on the broader class of muscle relaxants, including non-benzodiazepine antispasmodics like cyclobenzaprine, show that they may provide a small but often statistically significant reduction in pain intensity in the setting of acute low back pain. However, there is generally very low to low certainty of evidence regarding their overall impact on reducing disability. A consistent finding across the class is the increased risk of certain adverse events, such as sedation and dry mouth, compared to placebo.

Key Studies & References

  1. Low-dose cyclobenzaprine versus combination therapy with ibuprofen for acute neck or back pain with muscle spasm: A randomized trial

Frequently Asked Questions (FAQ)

Common questions about Miosan Caf (FAQ)


Q: How quickly does Miosan Caf start working after taking it?

Official studies indicate that the main component of Miosan Caf becomes detectable in the bloodstream approximately 1.5 hours after administration, indicating its presence in the body. For the typical immediate-release dosing schedule, regulatory information shows the drug reaches a steady concentration level in the body within 3 to 4 days.


Q: How long does the effect of Miosan Caf typically last?

According to the official product information, the primary active ingredient, cyclobenzaprine, is eliminated relatively slowly from the body. The effective half-life of this component is approximately 18 hours.


Q: Are there any long-term side effects associated with Miosan Caf use?

Official documents state that Miosan Caf is not recommended for use longer than two to three weeks. This limitation is due to a lack of adequate evidence establishing its effectiveness and long-term safety for more prolonged use.


Q: Can Miosan Caf interact with common over-the-counter pain medications?

Official drug interaction studies indicate that the main component of Miosan Caf showed no significant effect on the drug levels when administered with common nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin, naproxen, or diflunisal.


Q: Are there foods or supplements that should be avoided when using Miosan Caf?

Official labeling specifically warns against the use of alcohol due to the risk of additive depressant effects on the nervous system. Additionally, caution is advised regarding excessive external caffeine sources due to potential additive stimulant effects.


Q: Does Miosan Caf cause weight gain or weight loss?

Both weight gain and weight loss have been reported rarely as adverse events in studies involving the main component. However, the official documentation does not establish a clear, direct causal relationship between the medicine and these changes in weight.


Q: Can Miosan Caf be addictive or habit-forming?

The main component, cyclobenzaprine, is not classified as a controlled substance by the U.S. Drug Enforcement Administration. Despite this classification, reports of dependence and abuse have been noted with the use of the drug.


Q: What is the mechanism by which Miosan Caf relieves muscle discomfort?

The official mechanism of action is primarily within the central nervous system (CNS), likely acting at the brain stem level. This action reduces what is known as 'tonic somatic motor activity,' which helps to lessen muscle tension and relieve spasm.


Q: Is it true that Miosan Caf can cause rebound effects if stopped suddenly?

While Miosan Caf is only recommended for short periods, reports of withdrawal symptoms have been associated with suddenly stopping treatment with similar centrally acting drugs after long-term use.


Q: Can I drive or operate machinery after taking Miosan Caf?

Regulatory labeling and patient information explicitly state that this medication may impair the mental and/or physical abilities required for operating heavy machinery or driving a motor vehicle. The label carries a warning that patients should not drive or operate machinery until they know how the medication affects them.


Q: Can Miosan Caf be crushed or split if a person has trouble swallowing pills?

Official product information provides specific administration instructions for different forms of the medicine. While some extended-release capsules can be opened and sprinkled on soft food, immediate-release tablets do not have specific instructions for splitting or crushing on the regulatory label.


Q: Does Miosan Caf affect blood pressure?

Official documentation of adverse cardiac effects includes changes in blood pressure. Both hypotension (low blood pressure) and, rarely, hypertension (high blood pressure) have been reported in association with the drug.


Q: What should I look out for as a sign of an allergic reaction to Miosan Caf?

Regulatory labeling reports less common but serious signs of a hypersensitivity reaction. These may include anaphylaxis (a severe allergic reaction), hives (urticaria), itching (pruritus), rash, or swelling (edema) of the face and/or tongue.


Q: How effective is Miosan Caf compared to placebo in clinical trials?

Clinical trials of the cyclobenzaprine component showed statistically significant findings over placebo for key outcomes, such as reduction in muscle spasm severity. This effect was observed starting as early as Day 3 or 4 of therapy.


Q: Does Miosan Caf contain any common allergens like gluten or lactose?

Official labeling for the immediate-release tablet formulations confirms that the medicine contains lactose as an inactive ingredient. The product label should be referenced for the complete list of inactive ingredients.


Q: Why do some people experience dry mouth when taking Miosan Caf?

The dry mouth and other effects are due to the main component, cyclobenzaprine, having an atropine-like action, which causes anticholinergic effects. This pharmacological activity is the known reason for side effects like dry mouth, constipation, and urinary retention.


Q: What is the risk of overdose with Miosan Caf?

Official warnings state that overdose with Miosan Caf may be fatal, particularly when it is taken with other central nervous system depressants. Serious symptoms reported include cardiac arrest, seizures, and arrhythmias (irregular heartbeat).


Q: Is Miosan Caf considered a narcotic or controlled substance?

According to the U.S. regulatory bodies, the main active component, cyclobenzaprine, is not classified as a controlled substance under the Controlled Substances Act.


Q: Is Miosan Caf used for nerve pain?

The drug is officially indicated for the relief of muscle spasm associated with acute painful musculoskeletal conditions. Official regulatory information states the medicine is not found effective in the treatment of spasticity, cerebral palsy, or other nerve-related conditions.


Q: Is it possible to become tolerant to the effects of Miosan Caf?

Regulatory labeling is silent on the topic of tolerance but restricts the medicine to short periods (up to 2 or 3 weeks). This is because adequate evidence of effectiveness for more prolonged use is not available.


Q: Does Miosan Caf interact with herbal supplements like St. John's Wort?

The medication carries an increased risk of a serious condition called Serotonin Syndrome when used with other serotonergic drugs. Patients should be aware that the use of serotonergic supplements increases the potential for adverse effects.

How should Miosan Caf be stored and disposed of?

How to Store and Dispose of Miosan Caf

Miosan Caf (Cyclobenzaprine Hydrochloride and Caffeine) must be stored under specific conditions to ensure its stability and effectiveness, as directed by official labeling.

Official Storage Requirements

The medicine requires storage at controlled room temperature, specifically between 15 C and 30 C. The product must be protected from light and protected from humidity. It is mandatory to keep the tablets in their original, closed packaging and to not expose the medicine to freezing temperatures.

Stability and Child Safety

The product's labeled stability period is 24 months from the date of manufacture. The medication must not be used after the expiration date. As a critical safety measure, Miosan Caf must always be stored out of the sight and reach of children.

Disposal Instructions

Expired or unused Miosan Caf should be disposed of properly. Official guidelines recommend utilizing drug take-back programs or following local regulations and the advice of a pharmacist for the final disposition of the product.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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