Citoneurin

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Citoneurin

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 Citoneurin

What is Citoneurin? (Overview)

Property Description
Active Ingredients Thiamine (B1), Pyridoxine (B6), Cyanocobalamin (B12)
Form Oral tablets and injectable solution
Pharmacological Class Neurotropic B-Vitamin Complex
Common Use Nutritional support for nerve health and deficiency correction
Origin Synthetic

Citoneurin is a widely recognized brand name for a neurotropic B-vitamin complex, classified pharmacologically as a therapeutic agent essential for nerve function. This specific combination contains high doses of three B-group vitamins, which is a key differentiator from general multivitamin supplements. It is supplied as both an oral tablet and a powerful injectable solution (intramuscular route) to address varying clinical needs.


Citoneurin's Composition: A B-Vitamin Complex

The medicine contains three key active pharmaceutical ingredients (APIs): Thiamine (Vitamin B1), Pyridoxine (Vitamin B6), and Cyanocobalamin (Vitamin B12). These components are consistently manufactured through laboratory synthesis, confirming the medicine's synthetic origin. The formulation is highly concentrated to address specific metabolic needs.

The combination of these specific neurotropic vitamins for nerve support and regeneration is utilized in clinical practice, which is why they are often co-formulated. This supports the medicine’s use in providing enhanced metabolic support to the nervous system, crucial for the health of nerve tissue.


What Conditions is Citoneurin Used For? (Therapeutic Purpose)

The primary therapeutic purpose of Citoneurin is to act as a nutritional supplement for the treatment of hematological and neurological symptoms that result from a continuous, specific deficiency in Vitamins B1, B6, or B12. This focused application is essential for providing targeted metabolic support to the peripheral nervous system.

The formulation serves to address these underlying vitamin imbalances. This establishes the medicine’s core function in restoring necessary vitamin levels required for the maintenance and metabolic repair of healthy nerve tissue.

Regulatory References

  1. See WHO VigiAccess data

What side effects are possible with Citoneurin?

Possible Side Effects and Safety Information

The safety profile for the B-vitamin complex in Citoneurin, comprising Thiamine, Pyridoxine, and Cyanocobalamin, is categorized based on official regulatory documentation.

Adverse reactions are primarily organized by System-Organ Class and are generally documented as rare events.


Documented Adverse Reactions and Safety Classification

The adverse reactions officially listed in regulatory documents fall under several System-Organ Classes:

  • Immune System Disorders may include rare instances of anaphylactic shock, which is classified as a potentially fatal serious adverse reaction.
  • Nervous System Disorders are associated with symptoms such as headache, dizziness, agitation, and anxiety.
  • Skin and Subcutaneous Tissue Disorders include rash, pruritus (itching), and urticaria, typically documented in rare cases.
  • Gastrointestinal Disorders may involve mild transient diarrhea.

Serious Reactions and Safety Constraints

A major safety pattern is linked to the duration and dose of Vitamin B6. Severe peripheral neuropathies are explicitly documented as a serious reaction associated with the long-term use of large doses of Pyridoxine.

Population-Specific Safety: Patients with impaired kidney function using the injectable form are subject to a safety note regarding the risk of aluminum toxicity with prolonged parenteral administration. Furthermore, the medicine is contraindicated prior to specific blood sampling procedures for detecting megaloblastic anemia, as it may interfere with the diagnostic result.

Safety Restrictions: Citoneurin is contraindicated in individuals with a known hypersensitivity to any of its components and in cases of pre-existing hypervitaminosis. The regulatory text also notes that high doses of Pyridoxine may reduce the therapeutic effect of levodopa.

Overdose and Emergency Response

Overdose Manifestations and Risks

Official regulatory labeling describes overdose symptoms primarily linked to chronic, high-dose exposure to the Pyridoxine (Vitamin B6) component. These manifestations involve the peripheral nervous system and include sensory neuropathy, which may present as paresthesia (tingling or numbness), ataxia (loss of coordination), and gait disturbances. Prolonged, excessive intake is officially documented as carrying a risk of permanent neurological damage.

Acute overdose risk is also associated with the Thiamine (Vitamin B1) component, particularly when administered via injection. This can lead to a severe, life-threatening allergic reaction known as anaphylactic shock or hypotension.

Emergency Actions and Required Care

In the event of a suspected overdose or the appearance of any signs of toxicity, patients are officially mandated to seek immediate medical attention. The primary required action is the discontinuation of the medicine to prevent further exposure.

Immediate contact with emergency services is required if severe acute symptoms occur, such as signs of anaphylactic shock, including difficulty breathing or a sudden drop in blood pressure. Official regulatory documents confirm that no specific antidote is known for this combination. Therefore, management is strictly limited to symptomatic and supportive treatment, often requiring hospital monitoring to stabilize the patient's physiological status and manage clinical symptoms.

Therapeutic Uses of Citoneurin

What Citoneurin Treats: Main Uses and Benefits

Citoneurin is a therapeutic formulation composed of essential B-complex vitamins, specifically B1 (thiamine), B6 (pyridoxine), and B12 (cyanocobalamin). This combination is primarily used to address conditions involving the peripheral nervous system and metabolic deficiencies where these specific nutrients play a critical role.

Primary Indications

The medication is most commonly utilized in the management of inflammatory and degenerative conditions affecting the nerves. These include:

  • Neuralgia and Neuritis: This encompasses various forms of nerve pain and inflammation, such as sciatica (pain radiating along the sciatic nerve), trigeminal neuralgia, and intercostal neuralgia.
  • Peripheral Neuropathy: Citoneurin is used to support the treatment of nerve damage that can result from metabolic disturbances or chronic conditions, helping to manage symptoms like tingling, numbness, or burning sensations.
  • Radiculopathy: It is often indicated for pain resulting from compressed or irritated nerves in the spinal column.

Therapeutic Benefits

The benefits of Citoneurin are derived from the synergistic action of its three components on the nervous system and cellular metabolism:

  • Nerve Repair and Maintenance: Vitamin B12 is essential for the synthesis of myelin, the protective sheath that surrounds nerve fibers. By supporting myelin integrity, the medication aids in the proper transmission of nerve impulses.
  • Neurological Energy Metabolism: Vitamin B1 provides the necessary energy for nerve cells to function efficiently by aiding in the conversion of carbohydrates into fuel.
  • Neurotransmitter Synthesis: Vitamin B6 acts as a cofactor in the production of neurotransmitters, which are the chemical messengers that allow communication between neurons.
  • Management of Vitamin Deficiencies: In cases where dietary intake is insufficient or absorption is impaired, Citoneurin helps restore optimal levels of B1, B6, and B12, thereby preventing the neurological and hematological complications associated with these deficiencies.

Regulatory References

  1. National Drug Formulary (NDF) of Singapore

Eligibility and Restrictions for Use

Who Can and Cannot Use Citoneurin?

The official eligibility profile for Citoneurin, a high-dose neurotropic B-vitamin complex, defines both the approved populations and those for whom use is strictly restricted or prohibited, based on regulatory labeling.


Eligibility Scope

Classification Status & Requirements (Official Regulatory Basis)
Contraindicated Patients with known hypersensitivity to Thiamine (B₁), Pyridoxine (B₆), Cyanocobalamin (B₁₂), or any excipients. Also, use is prohibited in patients receiving Levodopa (L-Dopa) therapy or those with Leber's disease (hereditary optic atrophy).
Age-Related Rules The injectable solution is contraindicated for newborns and premature infants due to excipient content. Safety and effectiveness are not established for some formulations in children under a specific age (e.g., 11 or 14 years).
Pregnancy/Lactation Not recommended or Must not be used (High doses of B₆ are a concern, and clinical data for the high-dose combination is limited).
Conditional Use Use in megaloblastic anemia must be preceded by confirmed B₁₂ deficiency to avoid masking the diagnosis of folate deficiency. Restrictions apply for patients with certain severe cardiac conduction disorders (injection form).

Official Eligibility Summary

The medicine is generally allowed for adults and adolescents with confirmed deficiency states. Use is strictly limited or prohibited in populations where the risks, particularly related to the high concentration of vitamins, outweigh the benefit as defined by regulatory authorities.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Citoneurin, a combination of Thiamine (B1), Pyridoxine (B6), and Cyanocobalamin (B12), has officially documented interactions primarily concerning pharmacodynamic effects and altered absorption.


Documented Drug-Drug Interactions

Active Ingredient Interacting Substance Official Regulatory Outcome
Pyridoxine (B6) Levodopa Antagonizes the effects of Levodopa; this antagonism is counteracted if a decarboxylase inhibitor is co-administered.
Cyanocobalamin (B12) Chloramphenicol May inhibit the expected therapeutic response to B12.
Thiamine (B1) Fluorouracil The anti-cancer agent may affect the way Thiamine works.

Absorption and Substance Interactions

Interactions that reduce the body's exposure to Cyanocobalamin (B12) are officially documented with several drug classes, including Proton Pump Inhibitors (PPIs), H2-receptor antagonists (H2-blockers), and the biguanide Metformin. Other substances that may reduce B12 absorption include Aminoglycosides, Aminosalicylic acid, and Colchicine. Separated administration may be necessary when taking B12 with Ascorbic Acid (Vitamin C) supplements to maintain B12 availability. Furthermore, chronic heavy alcohol intake is documented to cause B12 malabsorption. Finally, the absorption of B1 and B6 may be commonly decreased in patients with chronic alcoholism.

Mechanism of Action

Coenzyme Function for Neuronal Metabolism

This domain covers the role of B vitamins (B1, B6, B12) as essential coenzymes that activate key enzymes in the nervous system. By supporting the efficient metabolism of glucose and amino acids, this mechanism contributes to the necessary energy supply and the availability of metabolic precursors essential for neuronal cell processes.


Support for Myelin Sheath Synthesis and Repair

This mechanism centers on the critical involvement of Vitamin B12 in the methylation reactions required for synthesizing the phospholipids and proteins of the myelin sheath. This structural support contributes to the structural components of nerve fibers and the characteristics of nerve impulse conduction.


Neurotransmitter Synthesis Regulation

This area addresses the coenzyme role, primarily of Vitamin B6, in the metabolic pathways that synthesize crucial neurotransmitters like dopamine, serotonin, and GABA from their amino acid precursors. Modulating the upstream supply and balanced production of these mediators influences the synthesis and balance of neurotransmitters, affecting the chemical signaling between nerve cells.

Dosage and Administration Information

Citoneurin is administered through both parenteral (injection) and oral routes, establishing a two-tiered protocol for its use. The administration method is determined by the phase of treatment, typically starting with higher doses to correct deficiencies before transitioning to a maintenance pattern.


Administration Scope Summary

Administration Aspect Official Instruction Summary
Route & Form Intramuscular (IM) injection is the standard parenteral route, while Oral tablets are used for long-term management. Slow Intravenous (IV) injection is an approved route but requires prior dilution.
Dosing Schedule An initial, intensive phase often involves a therapeutic dose of 1 to 2 mL of the injectable solution administered daily. The oral maintenance regimen is commonly one to three tablets daily.
Frequency Pattern Treatment begins with a high-frequency daily schedule. This transitions to a reduced-frequency maintenance regimen, such as weekly or monthly injections, or continuous oral use, for sustained management.

Resulting Procedural Structure

The official use protocol begins with an intensive course, where the medicine is administered daily. Parenteral administration requires specific technique: the injection must be given deep into the gluteal muscle, and the site should be rotated during repeated use. If the intravenous route is chosen, the high-concentration solution must be diluted before slow administration. Oral tablets are often instructed to be swallowed unchewed after meals. The total course of treatment shifts from this initial high-intensity phase to a less frequent, sustained pattern based on the therapeutic need, as defined by the prescribing information.


Population-Specific Notes

The adult dose is generally applied to older adults, though monitoring is necessary for those with renal or hepatic impairment due to excipients. For the pediatric population, official instructions may suggest a proportional dose adjustment relative to the adult dose.

Recent Clinical Evidence

Citoneurin: Recent Clinical Evidence

Evidence for Managing Symptoms of Peripheral Nerve Distress

Research, including Randomized Controlled Trials (RCTs) and Systematic Reviews, has explored the use of this neurotropic B-vitamin complex for symptoms of nerve distress, such as pain, numbness, and tingling, particularly in adults with diabetic neuropathy. Studies measured patient-reported symptom scores over short-term intervals (4 to 12 weeks). Some trials reported patterns where subjective symptom scores decreased during the treatment period. However, the available evidence is heterogeneous, and many studies have modest sample sizes. Long-term effects and the sustained durability of observed changes are not fully established by the existing research.


Research on the Role in Acute Low Back Pain

Research has examined the B-vitamin complex in the context of acute low back pain. Short-term RCTs specifically studied the complex when used alongside conventional pain treatments (adjunct therapy). These studies monitored pain scores and functional activity levels. Findings indicated that in some trials, the combination was associated with a change in the reported timeline for pain levels compared to the conventional treatment alone. This evidence contributes to the understanding of the complex when used for acute, temporary symptoms, but comparative evidence for its use as a stand-alone therapy is limited.


Evidence for Correcting B-Vitamin Deficiencies

The use of the B-vitamin components in conditions caused by nutritional depletion is supported by a large volume of Systematic Reviews and Clinical Observation Studies. Research examined the complex's role in populations with laboratory-confirmed deficiencies in B1, B6, or B12. The evidence base is highly consistent for the specific purpose of correcting a proven deficiency, as studies observed an association with the normalization of blood biomarkers and a change in associated systemic symptoms. Research often focuses on the replacement of individual vitamins rather than specifically examining the fixed triple B-vitamin combination across all deficiency states.


What Research Still Needs to Clarify

The main research limitations include the heterogeneity and modest sample sizes found across many independent trials, which restricts the ability to draw broad conclusions. Data for certain groups, such as children, pregnant populations, or individuals with severe comorbid conditions, are limited. There is insufficient information available for long-term outcomes, making it difficult to fully assess sustained results.

Key Studies & References Effect of Combined Diclofenac and B Vitamins (Thiamine, Pyridoxine, and Cyanocobalamin) for Low Back Pain Management: Systematic Review and Meta-analysis

Frequently Asked Questions (FAQ)

Common questions about Citoneurin (FAQ)

Q: What is the meaning of the number '5000' in the name Citoneurin 5000?

The numbers used in the product name are often a way for the manufacturer to indicate the medicine's strength or concentration. These numbers typically correspond to the amount of one of the active ingredients, such as Vitamin B12 (Cyanocobalamin), in the specific formulation. Official labeling, which is available in regulatory documents, defines the exact dose in measurable units like mcg/mL.

Q: Is it normal to experience pain or irritation at the site of the Citoneurin injection?

The official regulatory documentation reports that local reactions at the injection site are a known potential occurrence for injectable B-vitamin complexes. These reactions may include temporary feelings of pain, swelling, or slight bleeding. Concerns regarding prolonged or severe discomfort should be addressed with a prescribing healthcare provider.

Q: Can Citoneurin change the color of my urine?

Yes, it is a documented effect. The body naturally excretes any unused Vitamin B12 through the urine. Due to its chemical properties, this excretion process may cause the urine to turn a pinkish or reddish color. This change in color is generally documented as harmless and is not typically noted as an adverse event.

Q: Can Citoneurin be taken alongside common pain relievers like paracetamol or ibuprofen?

Regulatory interaction data generally indicates that the vitamin components of Citoneurin are compatible with common non-prescription pain relievers. There is not a specific drug-drug interaction warning listed for these compounds. However, official information suggests that all medications and supplements should be reviewed by a prescribing professional for use consistency.

Q: Is there a documented interaction between Citoneurin and any blood pressure medications?

Official regulatory documents do not commonly list major, direct interactions between the B-vitamin complex in Citoneurin and standard blood pressure medications. Nevertheless, because all medications can have individual effects, it is generally recommended that a healthcare provider reviews the complete medication regimen for any potential interactions.

Q: What warnings exist regarding the use of Citoneurin with certain types of anticonvulsant drugs?

Regulatory warnings do not document a major direct drug-drug interaction between the B-vitamin components and most common anticonvulsants (medicines for seizures). However, since certain anticonvulsants may affect the body’s vitamin levels over time, the management protocol for patients taking these combinations may involve monitoring of B vitamin status during long-term use.

Q: Why is one of the vials in the injectable format a distinct red color?

The visually distinct red or pink color of the injectable solution is caused by the active ingredient Cyanocobalamin, which is Vitamin B12. This vitamin naturally contains the mineral cobalt and this structural property gives the compound its characteristic deep red hue.

Q: Is it possible to become deficient in the B vitamins again after stopping Citoneurin treatment?

According to official product information, when Citoneurin is used to treat a chronic deficiency condition, such as pernicious anemia, the continuation of Vitamin B12 treatment is generally indicated for the long term. Stopping the medicine could lead to the return of the underlying deficiency and potentially result in serious and irreversible nerve damage.

Q: Does taking Citoneurin cause increased energy or can it lead to fatigue?

Official regulatory safety reports sometimes list feeling unusually weak or tired (fatigue) as a reported adverse reaction. While the medicine is intended to support nerve metabolism, an overall subjective feeling of 'increased energy' is not typically listed as a documented pharmacological effect in official regulatory labeling.

Q: What happens to the body if Citoneurin treatment is stopped suddenly?

In patients with chronic deficiency conditions like pernicious anemia, the sudden cessation of the medicine is associated with risks. This action may lead to the return of the anemia and the potential development of irreversible damage to the nerves of the spinal cord, as noted in regulatory safety information.

How should Citoneurin be stored and disposed of?

How to Store and Dispose of Citoneurin

The storage conditions for Citoneurin (B-vitamin complex) are strictly defined to maintain the potency of the medicine.

Storage Requirements

  • Temperature: Store the medicine at Controlled Room Temperature, typically defined as 20° to 25°C (68° to 77°F). It must not be stored above 30°C and the injectable solution must not freeze.
  • Protection: The product must be protected from light due to the light sensitivity of the B vitamins and should be kept in its original container.
  • Child Safety: Always keep the medicine out of the reach and sight of children.

Disposal Instructions

  • Environmental Rules: Unused or expired Citoneurin must be disposed of in accordance with local requirements and should not be thrown into household waste or flushed down the toilet.
  • Sharps: Used needles and syringes from the injectable form must be placed immediately into a dedicated, puncture-proof sharps container.

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

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