Polybion INJ

Quick links to important sections

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 Polybion INJ

Property Description
Active Ingredients Thiamine (B1), Riboflavin (B2), Nicotinamide (B3), D-panthenol (Pro-B5), Pyridoxine (B6), Cyanocobalamin (B12)
Form Injectable solution (Parenteral preparation, Ampoule)
Pharmacological Class Vitamin B-complex, Nutritional Supplement
General Purpose Correcting or preventing nutritional vitamin B deficiencies
Origin Semi-synthetic/Derived (Water-soluble vitamins)

Polybion INJ is a prescription-only medicine defined as a combination pharmaceutical preparation classified as a Vitamin B-complex agent, specifically formulated as a sterile injectable solution. This specialized parenteral preparation serves as a vital micronutrient replenishment agent, ensuring a comprehensive supply of essential water-soluble vitamins for systemic use.

What Type of Medicine is Polybion INJ?

Polybion INJ is a multi-component formulation belonging to the therapeutic class of nutritional supplements. The key differentiator is the "INJ" designation, confirming its status as an ampoule containing an aqueous base for direct injection. This route is clinically recognized for achieving rapid systemic availability, overcoming challenges like poor absorption in the gastrointestinal tract, such as in certain malabsorption syndromes. As a concentrated formula, it is often utilized when vitamin deficiency states are pronounced or when oral administration is ineffective.

Composition: Active Ingredients in the Polybion B-Complex

The preparation contains a blend of six crucial water-soluble vitamins that serve as the active ingredients. These include Thiamine Hydrochloride (B1), Riboflavin Sodium Phosphate (B2), Nicotinamide (B3), D-panthenol (Pro-B5), Pyridoxine Hydrochloride (B6), and Cyanocobalamin (B12). These chemical substances function as essential coenzymes, a role recognized in pharmacology.

General Purpose: Why is Polybion INJ Used?

The general purpose of Polybion INJ is the prophylaxis and therapeutic correction of vitamin deficiency states in patients. By supplying these essential cofactors, the medication supports foundational biological processes, primarily aiding in cellular energy production and maintaining nervous system integrity—a critical need in patients presenting with nutritional deficits. For example, it is typically used in clinical settings to address acute hypo- or avitaminosis where reliable, rapid systemic correction is necessary.

Regulatory References

  1. Malabsorption Syndrome - MedlinePlus

What side effects are possible with Polybion INJ?

Possible Side Effects and Safety Information

Adverse reaction reports for injectable B-complex preparations are categorized by government regulatory bodies based on the affected system or organ and include specific safety constraints.


Adverse Reaction Scope

Classification Area Documented Characteristics
Key Categories Hypersensitivity/Allergic Reactions (including risk of anaphylaxis) and effects categorized by System-Organ Class (e.g., Gastrointestinal, Cardiovascular, Nervous System).
Frequency Most effects are categorized by descriptive reporting (e.g., "reported"). Rare cases of anaphylactic shock have been noted, particularly following parenteral Thiamine administration.
System-Organ Classes Immune System: Anaphylactic shock, rash, pruritus. Cardiovascular: Pulmonary edema, congestive heart failure, peripheral vascular thrombosis. Nervous System: Peripheral sensory neuropathies. Gastrointestinal: Mild transient diarrhea, nausea, vomiting, abdominal pain. General: Pain at injection site, feeling of swelling of entire body.
Serious Reactions Anaphylactic shock and associated death have been reported. Severe and swift optic atrophy is documented in patients with Leber's disease treated with Cyanocobalamin (B12).
Population-Specific Contraindicated in individuals with Leber's disease and in patients with Dexpanthenol-related contraindications (e.g., hemophilia). Caution regarding aluminum toxicity risk in patients with impaired kidney function receiving prolonged parenteral treatment.
Dose/Exposure Patterns Early in treatment, cardiopulmonary reactions like pulmonary edema may occur. Long-term, high-dose Pyridoxine (B6) exposure is associated with peripheral sensory neuropathies.

Safety Classifications (High-Level)

  • Regulatory Basis: Information is derived from authoritative government regulatory sources, including FDA DailyMed and national SmPC documents.
  • Safety Restrictions: Contraindicated in known hypersensitivity to any component and in pre-existing B hypervitaminosis. An intradermal test dose may be recommended prior to administration for sensitivity assessment.
  • Diagnostic Interference: High doses of Cyanocobalamin may mask the diagnosis of anemia caused by folate deficiency.

Resulting Safety Structure

  • The official safety profile is structured around managing the rare, serious acute risk of anaphylaxis from parenteral administration.
  • The profile establishes specific population-based safety constraints, emphasizing contraindications for pre-existing neurological and hematological conditions.
  • Reported effects span various physiological systems, including dose-related neurological effects and transient injection site reactions.

Connection to the overall safety profile: The official safety information strictly defines the medicine's risk profile by classifying documented adverse reactions according to affected body systems and frequency, alongside mandating specific constraints for administration. This framework directs attention to rare, yet critical, systemic risks and documents population-specific safety limitations based on the regulatory texts.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Polybion INJ overdose is defined by the risks associated with parenteral (injection) administration of its high-dose B-vitamin components. Overdose may lead to life-threatening outcomes requiring immediate medical intervention.


Documented Overdose Manifestations

Classification Official Regulatory Statement
Severe Outcomes Anaphylactic shock and death have been reported following parenteral administration of components like Cyanocobalamin and Thiamine. Other severe manifestations include pulmonary edema, congestive heart failure, and peripheral vascular thrombosis.
Chronic Exposure Risk Peripheral sensory neuropathies are a documented outcome of prolonged, high-dose exposure to Pyridoxine (Vitamin B6).

Required Emergency Actions

Immediate medical attention is required for any signs of severe systemic toxicity or hypersensitivity. Regulatory guidance mandates that emergency services must be called immediately if the individual has collapsed, had a seizure, has trouble breathing, or can't be awakened.

No specific antidote is known for this B-complex formulation. Overdose management is limited to symptomatic and supportive treatment, with careful monitoring of cardiovascular and neurological status. Immediate administration of the product must be stopped if a severe reaction is suspected.

Therapeutic Uses of Polybion INJ

The injectable solution is commonly used to help with conditions that require supportive replenishment of essential B-complex vitamins, primarily addressing conditions where severe deficiency or absorption issues create noticeable physiological strain. The therapeutic use of B-complex injections is considered relevant for disorders that require parenteral administration of vitamins, including gastrointestinal conditions interfering with absorption, during pre- and post-operative periods, and in contexts such as alcoholism or wasting diseases where vitamin requirements are increased.

The medication is applied in addressing symptom clusters such as neuropathy-related discomfort (e.g., tingling, numbness), profound fatigue, and systemic weakness resulting from nutritional deficits. This injection may be part of symptomatic management for symptoms related to neuropathy that may be driven by B-vitamin deficits, and is applied in addressing the nutritional deficit to offer supportive benefit that helps ease nerve-related discomfort.

“This injectable form is relevant when supportive symptom management is appropriate due to compromised oral intake or acute physiological demand.”

Furthermore, this medication supports general well-being during symptomatic periods, contributing to a reduction in the symptom burden that interferes with daily functional stability.


Quick Fact: Relief for Systemic Weakness Polybion INJ helps support improved day-to-day comfort and a sense of vitality, especially in patients experiencing severe deficiency-related fatigue and general weakness.

Eligibility and Restrictions for Use

Eligibility Criteria for Polybion INJ

The eligibility for Polybion INJ is determined by official regulatory documents, which establish clear criteria for approved use and absolute contraindications.

Category Regulatory Status (Excerpted)
Populations Permitted Patients with confirmed nutritional deficiencies of B-complex vitamins and those with chronic medical conditions where supportive therapy is needed.
Absolute Contraindications Patients with known hypersensitivity to any component; pre-existing B hypervitaminosis; Leber's hereditary optic nerve atrophy; hemophilia; and ileus due to mechanical obstruction.
Conditional/Restricted Use Pregnancy: Limited safety information; use requires physician consultation. Lactation: Considered safe to use when prescribed. Kidney/Liver Problems: Use is conditional; monitoring or adjustment in administration frequency may be required.

Official regulatory sources specify that use is not recommended for megaloblastic anemia caused by folate deficiency, as the B12 component may mask the correct diagnosis. Use in children is permitted only under strict medical supervision. The profile strictly separates absolute non-eligibility (contraindications) from populations requiring conditional use based on physiological factors or underlying health conditions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documentation structures the interaction profile of Polybion INJ based on the specific effects of its component B vitamins on co-administered substances or nutrient absorption. This section details the officially documented interaction patterns and constraints.


Documented Pharmacological Interactions

Interacting Medicine Active Component Official Interaction Outcome
Levodopa Pyridoxine (B6) Reduces the therapeutic efficacy; this effect is formally mitigated when Levodopa includes a decarboxylase inhibitor.
Phenytoin, Phenobarbital Pyridoxine (B6) Co-administration may decrease the plasma concentration of these anticonvulsant medicines.
Chloramphenicol Cyanocobalamin (B12) May antagonize the hematopoietic response to Vitamin B12.

Constraints and Substance Interactions

Interaction documentation highlights substances that may impair nutrient absorption or pose a toxicity risk. Medicines such as Colchicine and Para-aminosalicylic acid are noted to potentially cause malabsorption of Cyanocobalamin (B12). The use of Histamine2-Receptor Antagonists may also reduce the availability of B12 over time.

Furthermore, the injectable formulation requires procedural constraints: the Thiamine (B1) component is chemically incompatible with moderately alkaline solutions (e.g., sodium bicarbonate) and bisulfite solutions, and must not be mixed or co-administered in the same parenteral line. Excessive alcohol intake is associated with both B12 malabsorption and, when combined with Nicotinamide (B3), a documented risk of toxic delirium and lactic acidosis.

Mechanism of Action

How Polybion INJ Works: Mechanism of Action

Polybion INJ acts mechanistically by supplying essential cofactors and coenzymes required for fundamental intracellular pathways. The mechanism is based on the coenzymatic roles of its B vitamin components, rather than receptor antagonism or direct signal blocking.

Catalysis in Core Energy and Carbohydrate Metabolism

The B vitamins ( B1, B2, B3, B5) directly engage with central metabolic cascades, including the Krebs cycle and pyruvate metabolism. These actions facilitate the efficient conversion of nutrients into cellular energy (ATP) through coenzyme participation in rate-limiting enzymatic processes.

Cofactor Roles in Neural Structure and Neurotransmitter Dynamics

Vitamin B12 and Vitamin B6 are required cofactors for the structural integrity and function of the nervous system. They support the synthesis of the myelin sheath and are crucial for the synthesis and balanced dynamics of key neurotransmitters that regulate nerve signaling.

Facilitation of Cell Replication and Hematopoietic Pathways

A separate mechanistic domain involves the catalytic role of Vitamin B12 in nucleotide synthesis (DNA/RNA production). This function is required for the high-rate cell division necessary for hematopoiesis (red blood cell formation) in the bone marrow.

Dosage and Administration Information

Polybion INJ is a sterile parenteral preparation, and its use is strictly governed by the official instructions for injectable B-complex vitamins. The administration must always be performed by a healthcare professional; it is not intended for self-administration.


Official Routes of Administration

The injectable solution may be administered through the following approved parenteral routes:

  • Intramuscular (IM) Injection
  • Slow Intravenous (IV) Injection
  • Subcutaneous (SC) Injection

Dosing and Frequency Schedule

The dosage regimen is personalized based on the severity of the deficiency, typically using a volume between 0.25 to 2 mL per dose. The use is generally divided into two distinct phases:

Treatment Phase Frequency Pattern (General Labeled Guidance)
Initial/Acute Correction Daily injection, continued until acute symptoms have resolved.
Maintenance/Follow-up Reduced to an intermittent schedule, such as two or three times per week.

Required Administration Conditions

Standard clinical protocols emphasize specific procedural steps for proper use:

  1. Preparation Check: The ampoule contents must be visually inspected for any signs of particulate matter or discoloration before the solution is administered.
  2. Dilution Requirement: When administered intravenously, high concentrations of the solution must be diluted using a compatible solution, such as Normal Saline, and injected slowly.
  3. Contingency: The product must not be injected if precipitation occurs within the solution, even after inspection.

Following these mandatory instructions defines the standardized approach to using the medicine as established for this therapeutic class.

Recent Clinical Evidence

Recent Clinical Evidence for Polybion INJ

Research on the injectable B-complex was studied for its relevance across several clinical contexts, primarily focusing on nutritional support.

Evidence is widely documented in studies for the correction of Vitamin B Deficiency States. Research explored whether the injection was associated with measurable shifts in serum B-vitamin levels and related metabolic biomarkers. Studies report measurements indicating that the use of the injectable B-complex was associated with a measurable shift towards a normal range in cases of confirmed deficiency. Findings indicate that both oral and injectable routes were studied for their effect on blood levels; the injection was observed in some studies to be associated with a more rapid initial increase in B-vitamin levels.

Studies have also explored the link between B-vitamin status and fatigue and weakness associated with nutritional deficits. Findings describe patterns that show a correlation between changes in B-vitamin levels and changes in reported physical fatigue in patients who were previously deficient.

In contrast, the B-complex injection was studied for its relevance in patients with Peripheral Neuropathy, where research examined outcomes related to physical discomfort such as pain. Systematic reviews analyzing the available evidence for B vitamins in this context often report that findings were mixed or inconsistent across trials. Overall, certainty remains low due to the limited number of high-quality randomized trials available.

Key areas of uncertainty remain across the research base. Follow-up durations were limited in many trials, meaning long-term effects are not fully established regarding the durability of response. Although specific groups like older adults and individuals with malabsorption were observed in deficiency studies, data for certain groups remain insufficient for specific B-vitamin combinations, and evidence quality varies across studies in general.

Key Studies & References

  1. DailyMed: Official Labeling for B-Complex Vitamins with C

Frequently Asked Questions (FAQ)

Common questions about Polybion INJ (FAQ)


Q: How does Polybion INJ differ from other B-complex supplements?

The key difference is the route of administration, as Polybion INJ is a sterile injectable solution. This method is utilized when rapid systemic availability of the vitamins is needed, as it allows the components to bypass the challenges of absorption that can occur with typical oral formulations.


Q: Can Polybion INJ be mixed with other injectable medicines?

Official documentation includes procedural constraints regarding mixing. The Thiamine (B1) component is noted to be chemically incompatible with certain solutions, specifically moderately alkaline or bisulfite solutions. For this reason, it is stipulated in the official documentation that the medicine should not be mixed or co-administered with incompatible substances in the same parenteral line.


Q: Are there known genetic factors that affect response to Polybion INJ?

The official safety profile explicitly names a genetic condition as a contraindication. The B12 component is noted in official documents to be contraindicated in patients with Leber's hereditary optic nerve atrophy due to the documented risk of severe optic atrophy.


Q: Can Polybion INJ affect the results of a blood test?

Official prescribing information cautions that high doses of the Cyanocobalamin (B12) component may interfere with blood test interpretation. Specifically, this substance has been documented to mask the diagnosis of anemia caused by folate deficiency.


Q: What is the shelf life of Polybion INJ?

The official instruction for stability requires adherence to the expiry date printed on the product label. This date defines the regulatory period of time during which the product is considered stable and effective under specified storage conditions.


Q: How long does the body take to absorb the components of Polybion INJ?

Studies and official information indicate that the parenteral (injectable) route is recognized for achieving rapid systemic availability. This route leads to a more rapid initial increase in B-vitamin levels in the body compared to administration via the oral route.


Q: Are there any known long-term observational studies of Polybion INJ users?

Systematic reviews of available evidence have noted limitations in the follow-up durations of many trials for B-complex injections. This means that, according to the available research, the long-term effects regarding the durability of the response are not fully established.


Q: What is the difference between the active ingredients and the inactive ingredients in Polybion INJ?

The active ingredients are the six essential B-complex vitamins that carry out the intended therapeutic function. The inactive ingredients, also called excipients, are substances like the aqueous base and preservatives that are necessary for the formulation, and these are listed on the specific product label.


Q: Why is Polybion INJ sometimes described as a 'neurotropic' agent?

This description relates to the documented functional role of the B12 and B6 components in the body. These vitamins act as essential cofactors that support the structural integrity of the nervous system and are crucial for the synthesis and balanced dynamics of key neurotransmitters.


Q: Is Polybion INJ related to steroids or hormones?

According to official regulatory classification, Polybion INJ is categorized as a Vitamin B-complex nutritional supplement. It is not chemically related to, or classified as, a steroid or a hormone.


Q: Are there specific lab tests required before starting Polybion INJ?

The official safety information does not mandate a specific pre-treatment lab test for all patients. However, confirmation of the deficiency state and subsequent monitoring are standard practices related to this type of treatment.


Q: Can Polybion INJ cause temporary changes in urine color?

Yes, the official information on the components indicates that one of the active ingredients, Riboflavin (Vitamin B2), is water-soluble. When excreted, this substance is known to cause a temporary, harmless bright yellow or fluorescent discoloration of the urine.


Q: Does the manufacturing process for Polybion INJ meet specific quality standards?

As a registered injectable pharmaceutical product, Polybion INJ is subject to mandatory regulatory oversight by national health agencies. This oversight ensures that the manufacturing process meets specific quality, safety, and purity standards before the product is approved and distributed.


Q: Does the regulatory description of Polybion INJ mention weight changes?

A review of the documented adverse reactions and effects categorized by System-Organ Class in the official safety profile shows that weight changes are not listed. Adverse events listed are strictly based on reports received by the health authorities.


Q: Can Polybion INJ be used by individuals with diabetes?

The official eligibility documentation does not list diabetes as an absolute contraindication for use. Eligibility is determined by the patient’s specific B-vitamin deficiency state and the absence of officially listed contraindications.


Q: Does Polybion INJ have different formulations in different countries?

The specific formulation, including the exact strength and inactive ingredients, can vary by country. This is because each product must adhere to the unique regulatory standards and review processes of the local health authority where it is registered.


Q: Is Polybion INJ subject to special import or export regulations?

The importation and exportation of pharmaceutical products like Polybion INJ are regulated and subject to the specific customs, tariff, and health authority laws of the respective government agencies.


Q: Is it true that Polybion INJ may cause a temporary burning sensation upon injection?

The official safety profile documents Pain at injection site as a commonly reported reaction following administration. This general description of localized discomfort can include sensations such as burning, stinging, or temporary soreness.


Q: What are the general expectations for a patient starting Polybion INJ treatment?

General expectations are framed by the drug's documented purpose, which is the correction of vitamin deficiency. Furthermore, available evidence has noted an association between use and reported changes in physical fatigue or weakness in patients who were previously deficient.

How should Polybion INJ be stored and disposed of?

The official regulatory requirements define specific conditions necessary for storing and disposing of Polybion INJ to maintain its stability and effectiveness.

Storage Requirements

  • Temperature: Store the injection at or below 30 C in a cool place, depending on the specific product formulation. It is prohibited to freeze the product, and storage must avoid excessive heat.
  • Protection: The medicine must be protected from light and moisture. To comply, it should be kept in its original packaging and the container must be tightly closed.
  • Child Safety: Like all medicines, Polybion INJ must be stored out of the reach and sight of children.

Disposal Instructions

  • Expiration: The product must be used before its stated expiry date.
  • Disposal: Unused or expired medication, as well as associated materials like sharps, should be disposed of according to the directions provided on the product label or specific national/local medical waste protocols.

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

Equivalent of Polybion INJ found in:

A-Z Index: