Maxthio

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Maxthio

Method of action: Muscle Relaxant

Treatment option:

Medically reviewed

Marina Burgos

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 Maxthio

This section provides a factual overview of the identity, composition, and general purpose of the medicine containing Thiocolchicoside.

Property Description
Active ingredient Thiocolchicoside (INN)
Form Available as Tablets (Oral), Injection (Intramuscular), and Topical preparations (Cream/Gel)
Pharmacological class Centrally Acting Muscle Relaxant
Common use Relief of painful muscle contractures
Origin Semi-synthetic derivative of the natural glycoside, Colchicoside

Defining Thiocolchicoside: Active Ingredient and Pharmacological Class

Maxthio is a prescription pharmaceutical preparation whose core component is the active ingredient Thiocolchicoside. This compound is classified as a Centrally Acting Muscle Relaxant. Thiocolchicoside is a semi-synthetic derivative that originates from Colchicoside, a natural glycoside sourced from the Gloriosa superba plant.

This drug's classification indicates that its primary function is to relieve muscle tension and stiffness by influencing the central nervous system (CNS) rather than acting directly on muscle tissue. Its unique origin from a natural precursor followed by semi-synthesis is a distinguishing feature among muscle relaxants.


Forms, Compositional Type, and General Purpose

As a single-ingredient medicine, Thiocolchicoside is offered in versatile dosage forms including oral Tablets, Solution for injection (intramuscular), and Topical preparations (creams or gels). The general therapeutic purpose of this medicine is to provide relief from the symptoms of painful muscle contractures that accompany various musculoskeletal disorders.

The efficacy of the compound in managing acute musculoskeletal stiffness is clinically recognized and its use in the management of painful muscle contractures is established. This supports the conclusion that the medication is specifically intended to address the underlying muscle stiffness contributing to pain.

What side effects are possible with Maxthio?

Possible Side Effects and Safety Information

Maxthio (Thiocolchicoside) is associated with adverse reactions classified by government regulatory documents according to frequency and the body system affected. The medicine’s safety profile is critically defined by strict limits on who can use it and for how long, due to specific regulatory concerns.


Common and Uncommon Adverse Reactions

Side effects are officially classified by frequency bands based on data from clinical trials and post-market surveillance. Common reactions are those most frequently observed, including drowsiness, diarrhoea, and stomach pain (gastralgia). Uncommon reactions may include nausea, vomiting, pruritus (itching), and erythema.


Serious Safety Considerations

Regulatory agencies document the potential for rare but serious adverse reactions affecting various body systems. These include severe immune responses such as anaphylactic shock and anaphylactic reactions. Risks related to the nervous system include the potential for seizure or a relapse in patients with pre-existing epilepsy. Additionally, fulminant hepatitis (severe liver conditions) is a documented hepatobiliary concern.


Duration and Population Constraints

The official labeling imposes mandatory restrictions on use due to the risk of genotoxicity associated with a major metabolite. Long-term use must be avoided, and the maximum duration of treatment is strictly limited (e.g., 7 days for oral forms). The medicine is contraindicated during pregnancy and lactation. It is also contraindicated in women of childbearing potential who are not using effective contraception, and it must not be used in children and adolescents under 16 years of age.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the overdose profile for Maxthio (Thiocolchicoside) based on documented clinical manifestations and mandated emergency actions. Suspected overdose is primarily associated with an exaggeration of expected effects, particularly concerning the gastrointestinal system and the central nervous system (CNS).


Documented Overdose Manifestations

Element Regulatory Description
Documented Symptoms Overdose may present with gastrointestinal symptoms, including nausea, vomiting, and diarrhoea.
Severe Outcomes The potential for convulsions or seizure activity is noted, particularly at high doses, based on regulatory documentation from animal studies.

Emergency Actions Mandated by Regulators

Official prescribing information uniformly stresses the need for urgent response. In the event of a suspected overdose, patients must seek immediate medical attention and physician monitoring is recommended.

Management procedures rely exclusively on supportive measures. Regulatory documents state unequivocally that no specific antidote is known for Thiocolchicoside overdose. Treatment is therefore symptomatic and supportive, focusing on reducing systemic absorption through measures such as the administration of activated charcoal or inducing gastric emesis, as specified in the official labeling for managing acute exposure.

Therapeutic Uses of Maxthio

Maxthio (Thiocolchicoside) is commonly used as an adjuvant treatment (supportive therapy) for symptoms related to physical discomfort arising from painful muscle contractures and spasms. This use is relevant within clinical settings that involve acute or disruptive symptom patterns, such as those seen in acute spinal pathology.

Conditions where Maxthio is applied include episodes of acute low back pain (LBP), sciatica, cervical spondylosis (neck stiffness), and torticollis. In situations involving muscle tension, this approach helps to ease the overall symptomatic burden during painful episodes.

“This supportive therapy is relevant for easing symptoms of increased muscular activity, supports patients during episodes of heightened discomfort.”

Alleviating Stiffness and Supporting Functional Stability

The medication's therapeutic focus is applied in addressing symptom clusters of musculoskeletal rigidity and stiffness. This may be part of symptomatic management in conditions where tension leads to a restricted range of motion, such as stiffness associated with certain rheumatic diseases or during post-traumatic and post-operative recovery. By helping to ease the discomfort of muscle stiffness, Maxthio assists with maintaining functional stability and contributes to improved day-to-day comfort.


Quick Fact: Relief for Painful Muscle Contractures

Maxthio is commonly used to provide symptomatic relief for stiffness and associated pain in acute musculoskeletal episodes.

Eligibility and Restrictions for Use

Maxthio (Thiocolchicoside) is subject to strict eligibility rules defined by regulatory authorities.

Approved and Restricted Populations

Use is officially allowed for adults and adolescents mathbf16 years of age and older, but it must be limited to short-term treatment only. Use is not recommended in children and adolescents under 16 years of age due to safety concerns.

Absolute Contraindications (Must Not Use):

The medicine is strictly contraindicated in several groups, including:

  • Patients with a known hypersensitivity to Thiocolchicoside, its excipients, or the related compound colchicine.
  • Individuals during pregnancy or lactation (breastfeeding).
  • Women of childbearing potential not using effective contraception, and men of reproductive potential not using effective contraception during and for three months after systemic treatment.
  • Patients with rare hereditary sugar intolerances (such as lactase deficiency) should not use the oral tablet formulation.

Conditional Use Requirements:

Patients with a history of epilepsy or seizure risks must be monitored closely, and treatment must be immediately discontinued if seizures occur.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The regulatory profile for Maxthio (Thiocolchicoside) outlines specific interaction cautions derived from clinical data and post-marketing surveillance. These cautions focus primarily on pharmacodynamic effects and specific organ risk, rather than metabolic pathway interference.


Documented Interaction Cautions

Interaction Category Officially Documented Outcome
Additive CNS Effects Concomitant use with other centrally-acting medicines (such as muscle relaxants or general CNS depressants) is officially not recommended. This combination increases the pharmacodynamic risk of amplified central nervous system effects, particularly somnolence (drowsiness).
Hepatotoxicity Risk Caution is advised when co-administering Maxthio with common analgesics like Nonsteroidal Anti-inflammatory Drugs (NSAIDs) or Paracetamol (Acetaminophen). Official regulatory documents note post-marketing reports linking this specific combination to a risk of serious liver injury, including cases of fulminant hepatitis.

Absence of Documented Pharmacokinetic Interactions

Regulatory documentation does not specify clinically significant interactions involving major Cytochrome P450 (CYP) enzymes or drug transporters, such as P-glycoprotein. Furthermore, official prescribing information does not list mandatory timing separation requirements or formal absolute drug-to-drug contraindications within the interaction section. The regulatory focus remains solely on preventing additive CNS depression and mitigating the documented liver safety signal associated with specific analgesic co-administration.

Mechanism of Action

Central Modulation of Spinal Inhibitory Systems

Thiocolchicoside (Maxthio) acts within the central nervous system by engaging primary inhibitory receptors. The molecule targets the mathbfGABAmathbfA and Glycine receptors (GlyRs) in the spinal cord and brainstem. This modulation alters the balance of central inhibitory neurotransmission, dampening the excessive signal transmission that feeds into the motor neurons. This mechanism modulates the level of signal transmission, leading to a reduction in pathological muscle hypertonia.


Interference with Pro-Inflammatory Cascades

Simultaneously, the molecule engages a secondary mechanism by acting as an inhibitor of the Nuclear Factor Kappa B (NF-kappaB) pathway. Since NF-kappaB regulates genes for many pro-inflammatory mediators, suppressing this pathway reduces the systemic production of chemical factors associated with inflammation. This complementary action contributes to the modulation of nociceptive signaling pathways.


The Mechanistic Paradox of GABA A Antagonism

While the drug's action on GlyRs supports signal dampening, its primary high-affinity action is competitive antagonism of the mathbfGABAmathbfA receptor. As this interaction opposes the CNS's main inhibitory input, it creates a functional limitation defined by the mechanism. This suggests that the resulting physiological effect primarily stems from the compound's selective agonistic or modulatory effect on spinal GlyRs, rather than its GABA A activity.

Dosage and Administration Information

How Maxthio is Used: Administration Guidelines

Maxthio (Thiocolchicoside) is used based on strict administration parameters which define the approved routes, maximum dosage, and duration of therapy. The primary goal of these instructions is to establish a standardized, time-limited regimen for the medicine.


Usage Scope

Administration Detail Description
Route of Administration Oral (tablet), Intramuscular (IM) injection, and Topical (cream/gel).
Maximum Adult Oral Dose Strictly limited to 16 mg per day (e.g., 8 mg twice daily).
Maximum Adult IM Dose Strictly limited to 8 mg per day (e.g., 4 mg twice daily).
Timing in Relation to Meals Oral tablets may generally be taken with or without food with a glass of water.
Use in Children Prohibited for individuals under 16 years of age.

Duration and Procedural Constraints

The systemic use of Thiocolchicoside is mandated to be short-term only, with definitive limits placed on the course length. For the oral route, the treatment duration is strictly limited to 7 consecutive days. For the intramuscular injection, the treatment duration is strictly limited to 5 consecutive days.

Intramuscular administration is often reserved for the initial, acute phase of treatment, after which the patient may transition to the oral tablet form, provided the overall treatment course adheres to the 7-day maximum. These short-course limitations define the procedural structure for how the medicine is administered across approved systemic routes.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Maxthio (Thiocolchicoside)

This overview summarizes the research evidence and clinical evaluation for Maxthio's active ingredient, Thiocolchicoside, as reported in authoritative scientific sources and regulatory documents. It focuses only on the types of studies conducted and the resulting scientific conclusions about the evidence base structure.


Evidence for Short-Term Painful Muscle Contractures (Systemic Application)

Research for Thiocolchicoside has primarily studied its application in an adjuvant therapy setting for painful muscle contractures. This research involves conditions like acute spine pathology that can accompany acute low back pain (LBP). Research in this area has relied primarily on short-term Randomized Controlled Trials (RCTs) and systematic reviews. These studies were designed to examine outcomes related to physical discomfort and daily functioning in adult patients experiencing periods of heightened symptom activity.

In these trials, researchers monitored patient-reported changes in pain intensity using scales like the Visual Analogue Scale (VAS). They also tracked physical disability using questionnaires like the Oswestry Disability Index (ODI) to measure changes in activity level. Meta-analyses that combined the data from these individual RCTs reported that studies explored differences in measured pain scores when comparing the medicine to a placebo. Some systematic reviews highlighted that certain observed measurements for differences between groups fell below the established threshold for a Minimally Important Difference (MID).


Research on Topical Formulations and Localized Stiffness

This research has explored the application of the topical formulations (creams or gels) for localized symptoms, such as cervical myofascial pain syndrome (stiff neck) or chronic low back pain with acute muscle spasms. These studies were applied in research contexts involving fluctuating or unstable symptoms.

These topical trials typically monitored changes in local pain severity and used objective tools to examine the pain threshold at the site of application. Studies also examined outcomes reflecting daily functioning or physical mobility, such as range of motion. Research exploring topical application describes patterns related to measured changes in local discomfort, but this research is not as voluminous as the evidence for systemic forms.


Research Gaps and Areas of Uncertainty

One key gap is the variability across studies and the reports of limited certainty of the evidence in several systematic reviews, often linked to the methodological quality of the original trials. The magnitude of change reported in some pooled data represents a primary area of uncertainty, as findings describe group patterns but do not determine whether an individual will respond with a clinically meaningful change in their own symptoms. Additionally, the existing research for both systemic and topical forms is concentrated on short-term symptom changes, meaning long-term effects are not fully established.

Key Studies & References

  1. Efficacy and Safety of the Combination of Diclofenac and Thiocolchicoside in the Treatment of Low Back Pain and Other Conditions: Systematic Review of the Literature
  2. A multi-center, double-blind, randomized parallel-group Phase IV study comparing the efficacy and safety of thiocolchicoside ointment treatment compared to placebo in patients with chronic mechanical low back pain (Topical RCT)

Frequently Asked Questions (FAQ)

Common questions about Maxthio (FAQ)


Q: Can Maxthio affect my mood or energy levels?

Official product information states that drowsiness, also known as somnolence, is a common side effect of Maxthio. Drowsiness is noted as a central nervous system effect. However, specific changes to mood or energy levels beyond drowsiness are not listed as common or serious adverse reactions in regulatory documents.


Q: What's the difference between Maxthio and other similar drugs I've heard of?

Maxthio is officially defined by regulatory bodies as a Centrally Acting Muscle Relaxant. Its mechanism involves modulating signal transmissions in the spine by targeting Glycine receptors. Official documents indicate that it also engages a secondary mechanism by acting as an inhibitor of the NF-kappaB pathway, which is associated with inflammation and nociceptive signaling.


Q: Are there any foods or drinks I need to avoid while on Maxthio?

According to official administration guidelines, Maxthio tablets may generally be taken with or without food. However, official safety advice specifically cautions against consuming alcohol while using this medicine. This is because combining Maxthio with alcohol can increase the potential for drowsiness and amplified central nervous system effects.


Q: Can I take Maxthio if I have a history of liver problems?

Regulatory documents advise caution regarding the use of Maxthio in patients who have pre-existing liver impairment. A risk of serious liver injury, including a severe condition called fulminant hepatitis, has been reported through post-marketing surveillance. The medicine's use with certain common painkillers is also cautioned against due to this hepatotoxicity risk.


Q: What are the most common reasons people stop taking Maxthio?

While official documents do not compile a ranking of the most common patient reasons for stopping the medicine, they do categorize the most frequently reported adverse reactions. The most common of these include central nervous system effects like drowsiness, as well as gastrointestinal effects such as diarrhoea and stomach pain. These effects are often the cause of discontinuation.


Q: Is it safe to drive or operate machinery while on Maxthio?

Official safety documents explicitly state that Maxthio may cause drowsiness (somnolence). The potential for drowsiness requires that an individual consider their ability to safely drive vehicles or operate heavy machinery. If drowsiness is experienced, regulatory documents indicate that activities such as driving and operating machinery should be avoided.


Q: Why does Maxthio need to be taken at a specific time?

Official administration guidelines state that the oral tablets can be taken flexibly in relation to food. However, since drowsiness is a common adverse effect, a healthcare provider might suggest taking the medicine at a specific time, such as before bed. This common recommendation is intended to help manage the potential for drowsiness during the daytime.


Q: Are there specific symptoms that mean Maxthio is working?

The therapeutic intent of the medicine is the reduction of painful muscle stiffness, which is medically described as muscle hypertonia. Researchers assess the medicine's effect by monitoring changes in patient-reported measures of pain intensity and levels of physical disability. In clinical studies, the measured differences for the study groups were related to changes in these areas.


Q: Does Maxthio have any black box warnings?

While the specific term 'Black Box Warning' is used within the U.S. regulatory system, agencies elsewhere have imposed equivalent, mandatory restrictions on Maxthio's use. These are based on serious concerns regarding the potential for genotoxicity, which is a risk of damage to the genetic material. These restrictions strictly limit the treatment duration to short courses and indicate that the medicine is contraindicated for women and men of reproductive potential who are not using effective contraception.


Q: Why do official documents mention certain lab tests are needed while taking Maxthio?

Official safety information documents a risk of serious liver injury, including the rare but severe condition known as fulminant hepatitis. This risk is amplified when Maxthio is used alongside certain common analgesics. This hepatotoxicity risk is the underlying reason a healthcare professional may recommend periodic lab tests to monitor liver function.


Q: How long after stopping Maxthio will it be completely out of my system?

Based on the pharmacokinetic data provided in official documents, the terminal elimination half-life of the active substance is approximately 2.7-2.8 hours. The active substance is generally cleared from the body within approximately 14 hours after the last dose has been administered.

How should Maxthio be stored and disposed of?

How to Store and Dispose of Maxthio (Thiocolchicoside)

Maxthio must be stored in accordance with official regulatory requirements to preserve its stability and prevent unauthorized access.


Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C (Maximum 30 C).
Protection Protect from light and moisture; keep container dry and away from direct heat and sunlight.
Container Keep the medicine in its original container, tightly closed.

Safety and Disposal

The product must be stored out of the reach and sight of children and should be kept locked up. For disposal, unused or expired Maxthio must be discarded according to national and local regulations, which often recommend a drug take-back program. It is strictly required to avoid allowing the product to enter drains or sewer systems.

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

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