Mydocalm-A

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Mydocalm-A

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Medically reviewed

Laura Arias

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 Mydocalm-A

Mydocalm-A is a medicinal product defined as a Fixed-Dose Combination (FDC) product that unites two distinct active substances—Tolperisone and Acetaminophen—to systemically address painful muscle conditions. It is designed for oral administration in the form of a solid tablet and is typically obtained with a prescription (Rx Status), distinguishing it from simple over-the-counter pain relievers. This preparation is a synthetic compound, meaning its active ingredients are products of chemical synthesis.

Quick Facts
Active Ingredients Tolperisone, Acetaminophen (Paracetamol)
Form Oral Solid Dosage Form (Tablet)
Pharmacological Class Centrally Acting Muscle Relaxant, Non-Opioid Analgesic
General Purpose Relief of musculoskeletal pain and associated muscle spasm
Origin Synthetic Compound

What Type of Medicine is Mydocalm-A?

Mydocalm-A is classified as a combination of a Centrally Acting Muscle Relaxant and a Non-Opioid Analgesic/Antipyretic. The drug works primarily by modulating activity within the Central Nervous System (CNS) to alleviate muscle stiffness and reduce pain. The capability of Tolperisone to suppress pathologically increased muscle tone supports its designation as a myotonolytic agent. This dual classification establishes its identity as a therapeutic option specifically for patients experiencing acute musculoskeletal discomfort where muscle hypertonicity is present.


What Active Ingredients Does Mydocalm-A Contain?

The combination features Tolperisone and Acetaminophen (Paracetamol) as its two active ingredients. Tolperisone is responsible for the muscle-relaxing effect, whereas Acetaminophen provides the analgesic action, helping to mitigate the symptomatic pain. Acetaminophen functions as a primary analgesic and antipyretic agent within this formulation. For patients, this combination simplifies the management of the pain-spasm cycle often encountered after acute injury or flare-ups.


What is the General Purpose of the Mydocalm-A Combination?

The general purpose of the Mydocalm-A combination is to provide symptomatic relief for acute musculoskeletal pain that is specifically accompanied by a painful and involuntary muscle spasm. By combining a myotonolytic agent (Tolperisone) with a dedicated pain reliever (Acetaminophen), the medicine offers a dual-action approach that addresses both the excessive muscle tension and the resulting symptomatic pain simultaneously. This function is intended to improve patient mobility and reduce discomfort associated with acute muscle hypertonicity.

Regulatory References

  1. European Medicines Agency
  2. National Institutes of Health (NIH)

What side effects are possible with Mydocalm-A?

Possible Side Effects and Safety Information

The safety profile for Mydocalm-A, which combines Tolperisone (a centrally acting muscle relaxant) and Acetaminophen (a non-opioid analgesic), reflects the documented risks of both active ingredients as outlined in official regulatory documents.

Adverse Reactions by Frequency and System

Side effects associated with the Tolperisone component are formally classified by frequency. Reactions considered uncommon (affecting up to 1 in 100 people) primarily involve the nervous system (e.g., headache, dizziness, muscular weakness) and the gastrointestinal system (nausea, vomiting, abdominal discomfort). Vascular disorders such as arterial hypotension have also been documented in this category.

Serious Safety Concerns

The most significant safety concerns are centered around the potential for severe reactions. The Acetaminophen component carries the documented risk of acute liver failure (hepatotoxicity) and death, which is associated with exceeding the maximum recommended daily dose. It is also linked to the rare occurrence of Severe Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson Syndrome (SJS). The Tolperisone component carries a risk of hypersensitivity reactions, which are classified as rare and include angioedema and the very rare risk of anaphylactic shock.

Safety Constraints and Special Populations

Official labeling imposes specific restrictions. The medicine is contraindicated (should not be used) in individuals diagnosed with myasthenia gravis. Caution is warranted for patients with underlying severe hepatic or renal impairment due to the effects on drug clearance, especially for the Acetaminophen component. Furthermore, chronic, high-dose use of Acetaminophen can increase the effect of certain anticoagulant medicines like warfarin, which may require monitoring.

Overdose and Emergency Response

The overdose profile for Mydocalm-A is governed by the combined toxicity of its two components: Tolperisone and Acetaminophen. Overdosage presents dual risks: a potential for acute neurological and cardiovascular events from Tolperisone, and a risk of delayed, severe liver damage from Acetaminophen. The severity is officially classified as potentially life-threatening due to risks like hepatic failure, encephalopathy, seizure, and respiratory depression.

Documented manifestations may initially include gastrointestinal symptoms such as nausea, vomiting, and pallor, alongside neurological signs like somnolence, vertigo, and in high doses, excitability (especially in children). Acute renal failure is also documented as a possible outcome. The official labeling notes that ingestion of 5g or more may be toxic to patients with risk factors, such as chronic alcohol intake.

Regulators mandate that immediate medical advice must be sought for any suspected overdose, even if the patient is asymptomatic, due to the latent onset of Acetaminophen-induced hepatotoxicity. Patients must be referred to the hospital urgently. Management involves symptomatic and supportive treatment. The antidote N-acetylcysteine (NAC) is required for Acetaminophen poisoning, but no specific antidote is known for the Tolperisone component.

Therapeutic Uses of Mydocalm-A

What Mydocalm-A Treats: Main Uses and Benefits

Mydocalm-A is a medication that plays a role in managing symptoms related to heightened physiological activity and symptoms of increased neurological or muscular activity. The medication is commonly used across conditions presenting with acute or recurrent episodes. The application of Tolperisone is focused on areas like spasticity, highlighting its role in conditions where functional stability becomes affected.

It is commonly used when short-term symptomatic assistance is needed in clinical settings that involve heightened systemic burden, applied across conditions presenting with disruptive symptom manifestations. This is relevant in contexts where additional symptomatic support is needed.

The therapeutic goal is to support the patient during difficult episodes by easing the overall symptom burden. It contributes to improved day-to-day comfort and helps maintain a sense of stability when symptoms are more noticeable. The medication offers symptomatic relief that may help patients cope more steadily with symptom fluctuations.


Quick Facts & Symptom Domains

Quick Fact: Support for Symptomatic Discomfort Relevant Symptom Areas
Mydocalm-A is relevant for easing symptoms associated with acute or episodic changes that may become disruptive or intensify temporarily. Applicable within clinical settings that involve episodic or fluctuating manifestations, and are marked by physical discomfort and strain.

Regulatory References

  1. European Medicines Agency (EMA) referral on Tolperisone

Eligibility and Restrictions for Use

Who Can and Cannot Use Mydocalm-A?

Eligibility for Mydocalm-A (Tolperisone/Acetaminophen) is strictly defined by regulatory authorities and centers on age, underlying conditions, and physiological status.

Populations Not Eligible (Contraindications)

Use of Mydocalm-A is contraindicated in the following groups:

  • Patients with a known hypersensitivity or allergy to Tolperisone, Eperisone, Acetaminophen, or any component of the tablet.
  • Individuals diagnosed with Myasthenia Gravis.
  • Nursing mothers (lactation).

Age and Organ Function Restrictions

Population Group Eligibility Status Regulatory Requirement
Adults (Age 18+) Permitted Standard labeled population.
Children/Adolescents Not recommended Safety and efficacy are not established.
Severe Hepatic/Renal Impairment Not recommended Risk of accumulation and increased systemic burden.
Moderate Organ Impairment Restricted Use Requires individual dose titration and close monitoring.

Pregnancy and Specific Conditions

Use is not recommended during pregnancy, particularly in the first trimester, due to insufficient clinical data. Additionally, patients with certain hereditary metabolic disorders (e.g., galactose intolerance) are ineligible due to tablet excipients. The official regulatory labeling should be consulted for all specific eligibility requirements.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Mydocalm-A (tolperisone) has a documented potential for drug interactions involving certain medicinal product classes and specific agents. These interactions are primarily managed by careful dose adjustment, as co-administration is not strictly contraindicated.

Interaction Mechanism and Drug Classes

Metabolic Pathway Inhibition: Mydocalm-A has been shown to increase the plasma levels of co-administered medicines that are predominantly metabolized by the liver enzyme Cytochrome P450 2D6 (CYP2D6). This mechanistic interaction can potentially lead to elevated concentrations of the co-administered drug, increasing the risk of adverse effects. Explicitly listed examples of such medicines include:

  • Beta-blockers (e.g., metoprolol, nebivolol)
  • Antidepressants (e.g., venlafaxine, desipramine)
  • Antipsychotics (e.g., thioridazine, perphenazine)

Pharmacodynamic Interaction: Concomitant use with other centrally acting agents and neuromuscular blockers requires caution due to potential enhancement of effects:

  • Centrally acting muscle relaxants and Benzodiazepines may necessitate a dose reduction of Mydocalm-A.
  • The effect of neuromuscular blockers (such as D-tubocurarine, mivacurium, and pancuronium) may be increased or prolonged when co-administered.

Other Agents: Combining Mydocalm-A with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) may also require monitoring and possible dose adjustment.

Mechanism of Action

Mydocalm-A functions through a dual mechanistic approach, combining two distinct actions that primarily occur within the Central Nervous System ( CNS) to modulate spinal reflex activity and nociceptive signal transmission.


Modulating Central Neuronal Excitability

This domain covers the action of Tolperisone, which targets and blocks voltage-gated Na^+ and Ca^2+ ion channels on neurons in the spinal cord and brainstem. This molecular action stabilizes the nerve cell membranes, decreasing the hyperexcitability of motor pathways and suppressing overactive spinal reflexes, contributing to the modulation of muscle hypertonicity.


Attenuating Central Nociceptive Signaling

Acetaminophen involves the inhibition of prostaglandin synthesis ( PGE2) in the CNS and the modulation of the descending serotonergic pain pathways via its AM404 metabolite activating TRPV1 receptors. This results in the central attenuation of nociceptive signal transmission and modulation of descending inhibitory pathways.


Combined Mechanistic Synergy

The formulation targets two different mechanistic domains: muscle hyperexcitability (via motor pathways) and nociception (via central sensory pathways). This coordinated action exerts a complementary influence on these two systems, resulting in the combined modulation of reflex activity and nociceptive signaling.

Dosage and Administration Information

How to Use Mydocalm-A: Administration Principles

This section outlines the general principles for the administration of the Mydocalm-A fixed-dose combination.


Routes and Schedules

Usage Principle Standard Instruction
Route of Administration Mydocalm-A is restricted to oral intake as a solid tablet.
Timing in Relation to Meals The tablet must be taken with or immediately after meals (in the fed state). Administration with food increases the absorption of the Tolperisone component.
Dosing Frequency The total daily dose is administered in a divided regimen, typically involving intake two or three times daily to maintain consistent levels.

Dosing and Population Adjustments

The adult dosing regimen is defined by the Tolperisone component, with limits also applying to the Acetaminophen component from all sources.

Dosing Component Adult Range/Limit
Tolperisone Daily Dose The maintenance dose generally ranges from 150 mg to 450 mg per day.
Acetaminophen Daily Limit The overall maximum intake of Acetaminophen from all sources should not exceed 4,000 mg in a 24-hour period.

For specific patient groups, the label mandates modifications. A dose reduction is required for adult patients with moderate hepatic or renal impairment. The medicine is generally not recommended for those with severe hepatic or renal impairment. If a dose is missed, the protocol is to skip the forgotten dose entirely and resume the regular schedule without taking a double dose to compensate.

Recent Clinical Evidence

Mydocalm-A: Recent Clinical Evidence

Evidence for Acute Muscle Spasm and Associated Pain

The evidence base is primarily structured around short-term Randomized Controlled Trials (RCTs) of the muscle relaxant component, Tolperisone, for use in clinical contexts related to acute back pain associated with muscle spasm. These studies tracked outcomes related to physical discomfort and monitored daily functioning or activity level in ambulatory adults. A key limitation is that follow-up durations were restricted, typically observing responses only over a 14-day treatment window.


Evidence for Pathologically Increased Muscle Tone (Spasticity)

Research also examined the muscle relaxant component in studies involving pathologically increased muscle tone, such as spasticity that can follow a stroke. Regulatory reviews indicate that the evidence quality varies across studies, with many older trials being of a lower methodological standard than is currently expected. Consequently, the evidence is limited for applications beyond the specific neurological conditions that were studied.


Research on Long-Term Outcomes and Follow-up Duration

Clinical studies have focused on research exploring short-term symptom changes related to acute or episodic manifestations. Because follow-up durations were limited, typically lasting 14 days, there is limited information for long-term outcomes. Whether patterns observed in the studies are sustained over many months or years are aspects that are not fully established by the existing core clinical trials.


Evidence in Specific Patient Populations and Gaps

Data for certain patient groups remain insufficient. For instance, research on the use of the medicine in children is not well-characterized, contributing to regulatory restrictions on the use of the component in these age groups. Subgroup findings are uncertain for populations such as older adults. A major limitation is that the primary evidence often does not directly assess the specific Fixed-Dose Combination with Acetaminophen itself. These limitations mean the available research provides context but not individual predictions.

Key Studies & References Acetaminophen (Paracetamol) - MedlinePlus Drug Information (National Institutes of Health)

Frequently Asked Questions (FAQ)

Common questions about Mydocalm-A (FAQ)


Q: Why is the 'A' added to the name Mydocalm-A?

The 'A' in Mydocalm-A stands for Acetaminophen (also known as Paracetamol). This name indicates that the product is a Fixed-Dose Combination (FDC). It combines the muscle relaxant component, Tolperisone (Mydocalm), with Acetaminophen, a common pain reliever, to provide a dual approach to pain and muscle spasm.


Q: How quickly should I expect to feel relief after taking Mydocalm-A?

Regulatory information indicates that the muscle relaxant component, Tolperisone, is quickly absorbed, reaching its highest concentration in the blood within approximately 1.5 hours. The pain-relieving component, Acetaminophen, also absorbs rapidly, with effects typically beginning within 30 minutes to one hour. Discussing specific expectations for relief with a healthcare provider can help you understand the potential timeline for this medication.


Q: Is Mydocalm-A known to cause stomach upset or nausea?

Yes, official product information lists common gastrointestinal issues, including nausea, vomiting, and general abdominal discomfort. These are typically categorized as uncommon side effects, meaning they affect up to 1 in 100 people. If any side effect, including stomach upset, becomes persistent or severe, it is important to consult a healthcare professional.


Q: Can Mydocalm-A be used for tension headaches that involve neck stiffness?

Mydocalm-A is officially indicated for the symptomatic treatment of acute musculoskeletal pain accompanied by muscle spasm. While this covers stiffness, the decision to use this medication for specific symptoms like neck stiffness associated with a tension headache is based on a healthcare provider's clinical assessment of the approved indications.


Q: Is there a generic version of Mydocalm-A available?

Mydocalm-A is a specific brand name for the fixed-dose combination of Tolperisone and Acetaminophen. While there may be generic versions of the single-component drug, Tolperisone, the availability of a direct generic equivalent for this specific combination product can vary significantly depending on the country or region.


Q: Is Mydocalm-A effective for muscle stiffness related to posture or desk work?

The medicine is indicated for treating muscle spasm associated with various forms of pathologically increased muscle tone. While the core regulatory evidence focuses on conditions like acute back pain and spasticity, its use for stiffness related to posture is determined clinically, based on whether the symptoms meet the general indication of painful muscle spasm.


Q: Is Mydocalm-A an addictive medication?

The active ingredients, Tolperisone and Acetaminophen, are not classified as controlled substances. Regulatory information does not list the potential for abuse or dependence, distinguishing it from opioid pain relievers or certain sedative-type muscle relaxants.


Q: Can Mydocalm-A affect blood pressure levels?

Yes, official safety information reports that arterial hypotension, which is low blood pressure, can occur as an adverse effect. This is listed as an uncommon reaction, affecting up to 1 in 100 people. It is important that any concerns about pre-existing health conditions, such as blood pressure issues, are reviewed by a healthcare provider.


Q: What ingredients are in Mydocalm-A besides the main active components?

In addition to the active ingredients, Tolperisone and Acetaminophen, the tablets contain excipients, which are non-active components like binders, fillers, and coatings. These are necessary to form the tablet and maintain its stability and are fully listed in the official patient information leaflet and regulatory documents.


Q: Why would someone experience a mild allergic reaction to Mydocalm-A?

Allergic or hypersensitivity reactions, such as a rash or itching, are a known, albeit rare, risk. This occurs if a person is allergic to either of the active ingredients, Tolperisone or Acetaminophen, or to any of the non-active ingredients found in the tablet. Severe allergic reactions are also rare but require immediate attention.


Q: Can Mydocalm-A be prescribed for spasms caused by neurological conditions?

Yes, the muscle relaxant component is approved for treating pathologically increased muscle tone due to various neurological disorders. This includes conditions like spasticity that may occur after a stroke or in patients with multiple sclerosis, aligning with the official regulatory indications.


Q: Are there any long-term side effects associated with Mydocalm-A use?

Clinical trials often have limited follow-up periods, typically focusing on short-term use, such as two weeks. Because of this limited follow-up duration, official regulatory evidence does not provide comprehensive data on the safety profile or outcomes of Mydocalm-A use extending over many months or years.


Q: Can Mydocalm-A cause mood changes or irritability?

The medicine is a centrally acting agent, meaning it works on the central nervous system. While side effects such as headache and dizziness are listed in the safety profile, patients taking any medicine that affects the central nervous system may be advised to observe for any unusual effects, including changes in mood or irritability.


Q: Is it okay to crush or chew the Mydocalm-A tablets?

Mydocalm-A is restricted to oral intake as a solid tablet. Since Mydocalm-A is intended for oral intake as a solid tablet, official guidance does not typically support crushing or chewing the tablets. Altering the tablet form may potentially affect how the active ingredients are absorbed.


Q: Is Mydocalm-A commonly prescribed for sports injuries?

Mydocalm-A is indicated for the relief of acute musculoskeletal pain and associated muscle spasm. Its use for sports-related muscle injuries would be based on a healthcare provider's determination that the symptoms, such as acute pain and spasm, meet the drug's official indication.


Q: Does Mydocalm-A have a potential for withdrawal symptoms if stopped suddenly?

Regulatory literature does not report the risk of withdrawal symptoms typically associated with certain dependence-forming medications. As with any medication, following the guidance of a healthcare provider for discontinuation is recommended to manage the underlying symptoms.


Q: Can Mydocalm-A cause constipation or diarrhea?

The safety profile lists general gastrointestinal side effects like nausea, vomiting, and abdominal discomfort. While not listed as the most frequent side effects, constipation or diarrhea can occur as general disturbances of the gastrointestinal system, similar to many oral medications.


Q: Why is Mydocalm-A not for everyone who has muscle spasms?

The medicine is contraindicated (must not be used) in several specific situations. This includes individuals with a known allergy to its components, those diagnosed with a condition called Myasthenia Gravis, and it is not recommended for nursing mothers or during the first trimester of pregnancy.


Q: What should I do if I experience unexpected side effects from Mydocalm-A?

Official patient information requires immediate discontinuation of the medicine and urgent medical attention if signs of a severe allergic reaction (such as swelling of the face, lips, or tongue) or serious liver issues (like yellowing of the skin or eyes, or severe abdominal pain) are observed.


Q: What is the main difference between Mydocalm-A and regular Mydocalm?

Mydocalm-A is a Fixed-Dose Combination product containing two active ingredients: the muscle relaxant Tolperisone and the pain reliever Acetaminophen. Regulatory documents for Tolperisone alone (which is often marketed as 'Mydocalm') indicate it is a single-ingredient drug, focusing only on the muscle-relaxing effect.


Q: Is Mydocalm-A used for back pain or just muscle spasms?

Yes, regulatory evidence confirms Mydocalm-A is indicated for treating conditions involving both acute musculoskeletal pain and muscle spasm. This includes clinical contexts related to acute back pain where muscle spasm is a factor, aligning with the general indication.


Q: Can Mydocalm-A make you feel drowsy or sleepy?

Official safety documents list the central nervous system effects of dizziness and headache. Although 'drowsiness' or 'sleepiness' are not explicitly listed as the most common side effects, any centrally acting medicine has the potential to cause sedation, and it is important for patients to be aware of the potential for these effects.


Q: What are the most common minor side effects people report with Mydocalm-A?

Commonly reported side effects that are listed as uncommon (affecting up to 1 in 100 people) include nervous system issues like headache and dizziness, and gastrointestinal effects such as nausea, vomiting, and abdominal discomfort. These are the effects most frequently reported in the core safety profile.


Q: Is it normal to feel a little dizzy when starting Mydocalm-A?

Dizziness is listed as an uncommon side effect in regulatory documents, meaning it affects a small percentage of users (up to 1 in 100). Any new or persistent side effect, including dizziness, is something that should be reviewed by a healthcare provider.


Q: Does Mydocalm-A interact with common over-the-counter pain relievers like ibuprofen?

Official information advises caution when using Mydocalm-A alongside Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), such as ibuprofen. The potential interaction means that co-administration may require monitoring and possible dose adjustment by a healthcare professional.


Q: Does Mydocalm-A have any known interaction with anxiety or sleep medications?

Yes, regulatory information advises caution with co-administration of other centrally acting agents, including medicines like Benzodiazepines (often prescribed for anxiety or sleep). This combination may lead to an enhanced effect, potentially requiring a dose adjustment.


Q: Does Mydocalm-A have a faster or slower onset than other muscle relaxants?

Regulatory documents describe the pharmacokinetic profile of Mydocalm-A, including the time it takes to reach peak concentration in the blood. However, official sources do not typically contain direct comparisons regarding the speed of onset relative to other classes of muscle relaxants.


Q: What is the active pain-relieving ingredient in Mydocalm-A?

The dedicated pain-relieving component in the Mydocalm-A combination is Acetaminophen (Paracetamol). Its primary role in the formulation is to provide analgesic (pain-relieving) action to treat the symptomatic pain associated with muscle spasm.


Q: What is the mechanism of action of the component in Mydocalm-A that is not the muscle relaxant?

The non-muscle relaxant component, Acetaminophen, primarily acts within the central nervous system. Its mechanism involves the inhibition of prostaglandin synthesis and the modulation of certain pain pathways, leading to the central attenuation of nociceptive (pain) signal transmission.


Q: Why might a patient prefer Mydocalm-A over a single-ingredient muscle relaxant?

The formulation offers a dual-action approach that addresses both the excessive muscle tension (via Tolperisone) and the resulting symptomatic pain (via Acetaminophen) simultaneously. This coordinated action provides a complementary effect on both muscle hyperexcitability and pain signaling.

How should Mydocalm-A be stored and disposed of?

Official Storage Requirements

The storage conditions for Mydocalm-A tablets are defined by regulatory labeling to maintain the stability of its active ingredients, Tolperisone and Acetaminophen (Paracetamol).

Storage Condition Requirement
Temperature Store at a temperature not exceeding 30 C.
Protection Must be protected from light and moisture.
Handling Rule Do not freeze the tablets.
Packaging Keep the medicine in the original packaging (blister strips in the outer carton).

This medicine must always be stored out of the sight and reach of children to prevent accidental ingestion.

Disposal Instructions

Unused or expired Mydocalm-A must be disposed of according to local regulatory requirements. Patients should utilize an authorized drug take-back program where available. The product should not be disposed of via wastewater or household trash unless specifically instructed by official guidelines.

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

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