Flavobion

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Flavobion

Method of action: Anti-Inflammatory

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Flavobion

What is Flavobion?

Flavobion is a pharmaceutical preparation containing a purified extract from the seeds of the milk thistle plant (Silybum marianum). The primary active component of this extract is silymarin, which is a complex mixture of flavonolignans, including silybin, silydiamin, and silycristin.

Mechanism and Characteristics

The active substances in Flavobion are recognized for their hepatoprotective properties. These compounds function by interacting with the membranes of liver cells (hepatocytes), where they may help stabilize cellular structures and support natural metabolic processes. By acting as an antioxidant, the silymarin complex helps neutralize free radicals, which are unstable molecules that can cause oxidative stress and cellular damage.

Primary Uses

Flavobion is typically utilized as a supportive treatment in the management of various chronic inflammatory and toxic liver conditions. Its application is generally focused on assisting the recovery and maintenance of liver function in contexts such as:

  • Chronic hepatitis (inflammatory liver disease).
  • Hepatic steatosis (fatty liver disease).
  • Liver cirrhosis (long-term scarring of the liver tissue).
  • Toxic-metabolic liver damage resulting from environmental factors, alcohol consumption, or certain medications.

Therapeutic Role

As a supportive agent, Flavobion is intended to complement broader therapeutic strategies rather than serve as a primary cure for underlying liver pathologies. It is used to help optimize the liver's internal environment, potentially slowing the progression of tissue damage and supporting the organ's innate capacity for regeneration.

Regulatory References

  1. About NIH
  2. Milk Thistle: NCCIH

What side effects are possible with Flavobion?

Possible Side Effects and Safety Information

The safety profile of Flavobion (Silibinin) is based on classifications documented in official regulatory sources, with adverse reactions generally reported with low frequency. These effects are formally categorized by frequency and the body system affected.


Official Adverse Reactions and Frequencies

Adverse reactions associated with Silibinin are predominantly classified as Rare or Very Rare in regulatory documentation. The most frequently observed reactions are typically mild and transient, primarily involving two system-organ classes:

  • Gastrointestinal Disorders: These may include mild laxative effects, loose stools, or other stomach discomfort.
  • Immune System and Skin Disorders: These are reported as rare events, such as allergic skin reactions, rash, or pruritus (itching).

Serious Adverse Reactions and Safety Constraints

While very rare, the potential for Severe Hypersensitivity reactions is formally documented, which can include symptoms like shortness of breath (dyspnoea) or, in extremely rare cases, anaphylaxis.

Regulatory documents establish several safety constraints. Flavobion is formally contraindicated in individuals with known hypersensitivity to the active substance (Silibinin) or to any plant from the Asteraceae/Compositae family (e.g., ragweed, daisies).

Population-Specific Safety Notes

The official labeling notes specific constraints due to lack of adequate data in certain populations. Use is not recommended in children under 12 years of age. Likewise, the medication is generally avoided during both pregnancy and lactation as a precautionary measure, reflecting the need for reliable human data in these groups. The label also contains a high-level note that the use of this medicine is not a substitute for the abstention from the underlying cause of liver damage, such as alcohol consumption.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Flavobion (Silibinin) overdose is primarily defined by the absence of specific toxicological data. Government authorities state that signs or symptoms of overdosage have not hitherto been observed in humans. Due to the low acute toxicity noted in available information, there are no data on human overdose documented in official regulatory sources.

Manifestations and Management

In the event of over-ingestion, the most likely documented clinical presentation is the amplification of known undesirable effects, such as mild laxative effects. No specific antidote is known for Silibinin overdose, which is a key regulatory finding reported in the prescribing information.

Required Emergency Action

In any case of suspected overdosage or poisoning, patients must seek immediate medical attention or contact a poison control center for guidance. The official treatment approach described by regulators is to provide symptomatic and supportive measures, taken as appropriate. A qualified healthcare professional should manage the treatment, focusing on the amplified signs and symptoms experienced by the patient. This approach underscores that no specific antidote exists and no special monitoring requirements specific to Flavobion overdose are mandated beyond general supportive care.

Therapeutic Uses of Flavobion

What Flavobion Treats: Main Uses and Benefits

Flavobion (Silibinin) is a hepatoprotective agent relevant for use in specific, challenging liver contexts, addressing symptoms linked to organ-specific functional stress. Its therapeutic value is centered on supporting liver cell integrity and managing pathological stressors.

The medication is commonly used as a supportive therapy in conditions involving inflammatory or irritative processes, including chronic hepatitis, alcoholic liver disease, and non-alcoholic fatty liver disease (NAFLD). It is also applied in acute clinical settings involving toxic liver damage. By assisting the liver in situations marked by temporary physiological imbalance, it may contribute to supporting better long-term functional stability.

“Flavobion provides supportive relief that helps patients cope more steadily with difficult episodes and assists with maintaining functional stability when symptoms are more noticeable.”

It is relevant for easing symptoms that create noticeable physiological strain, such as the pathological signs of stress within liver cells measured as abnormal liver enzyme levels. This supportive therapeutic foundation helps improve day-to-day comfort during symptomatic periods.


Quick Fact: Relief for Cellular Stress

Feature Therapeutic Focus
Primary Context Supportive management of chronic liver disease
Acute Context Intervention for severe toxic liver damage
Symptom Addressed Abnormal biochemical indicators (elevated liver enzymes)
Patient Benefit Assists with maintaining functional stability

Eligibility and Restrictions for Use

Who Can and Cannot Use Flavobion?

Regulatory documentation strictly defines the eligible population for Flavobion (Silibinin), establishing rules based on age, reproductive status, and pre-existing medical conditions.


Absolute Contraindications

Flavobion must not be used by specific populations due to the risks outlined in official labeling:

  • Patients with known hypersensitivity to Silibinin, Milk Thistle preparations, or the entire Asteraceae (Compositae) plant family.
  • Individuals with confirmed bile duct obstruction, cholangitis, gallstones, or other biliary disorders.
  • Women who are pregnant or breast-feeding are strictly contraindicated.

Restricted and Age-Based Eligibility

Use is limited to certain age groups and restricted by specific comorbidities:

Eligibility Group Regulatory Status
Adults (18 years and over) Indicated for use.
Children & Adolescents Not recommended due to insufficient data.
Renal Failure / Diabetes Use should be avoided as a precautionary measure.
Heart Failure Use should be avoided as a precautionary measure.

Eligibility is confined to the adult population. For patients with conditions like renal failure, diabetes, or heart failure, the regulatory advice is to avoid using the medicine. Consultation is required for patients with active liver disease to determine suitability.

What should I know about interactions with other medicines?

Interactions with other medicines and products: Official Regulatory Information for Flavobion

Interaction scope Official Regulatory Information (Silibinin)
Medicinal product categories with documented interactions: Narrow Therapeutic Window Medications (NTWMs). – Hypoglycemic Agents. – Drugs metabolized by the CYP450 enzyme system or glucuronidation.
Specific interacting medicines (if explicitly listed): Warfarin (anticoagulant). – Raloxifene (potential for altered hepatic metabolism).
Mechanistic basis of interactions (only if stated in label): – Potential for alteration of drug disposition via effects on the CYP450 enzyme system or glucuronidation pathways. – Potential for additive pharmacodynamic effect.
Timing-based interaction rules (if applicable): – None. Mandatory time separation windows are not specified in official prescribing information.
Population-specific interaction notes (if applicable): – None. No differential interaction severity is explicitly stated for specific patient populations.
Interaction-related restrictions: Alcohol (Ethanol): Formal restriction stating that treatment does not substitute for mandatory abstention from alcohol when alcohol is the cause of liver damage.
Interaction classifications (high-level)
Interaction severity classification (as defined in official documents): No known formal contraindicated combinations. – Use with caution for NTWMs and specific metabolic substrates.
Regulatory basis (EMA / FDA / etc.): – Information derived from government-published regulatory summaries and authoritative health organization monographs.
Interaction-context constraints (as defined in official documents): – Caution required when co-administered with drugs metabolized via affected pathways due to potential for altered exposure.

Official Interaction Statements:

  • The official regulatory profile indicates no known formal contraindicated combinations for co-administration with other medicines.
  • Co-administration requires caution with Narrow Therapeutic Window Medications due to the potential for altered plasma concentration resulting from effects on the CYP450 enzyme system or glucuronidation pathways.
  • A pharmacodynamic additive effect is documented with Medications for Type 2 Diabetes, potentially enhancing the blood-sugar-lowering action.
  • A mandatory restriction states that the medicine does not substitute for abstention from alcohol in patients with alcohol-related liver damage.

Connection to the overall interaction profile

Regulatory documents define the product's interaction structure primarily through an explicit absence of formal contraindications. The profile is augmented by mandatory warnings pertaining to pharmacokinetic and pharmacodynamic caution when co-administering with specific substance categories, necessitating awareness of potential exposure modification or additive effects. This officially documented framework mandates cautious use with narrow-margin and hypoglycemic agents and includes a non-pharmacological restriction regarding alcohol consumption.

Mechanism of Action

Flavobion, an extract containing the flavonolignans silybin, silydianin, and silychristin (collectively known as silymarin), primarily targets hepatocytes and membranes across multiple organ systems. The mechanism involves several distinct interactions.

Firstly, it functions as a non-specific free radical scavenger, donating electrons to neutralize reactive oxygen species (ROS) and reducing overall cellular oxidative stress. Secondly, it acts as an inducer of the nuclear factor erythroid 2-related factor 2 (Nrf2) transcription factor. Nrf2 translocation to the nucleus promotes the transcription of genes encoding Phase II detoxification enzymes (e.g., glutathione S-transferases) and endogenous antioxidant proteins (e.g., superoxide dismutase, catalase).

Thirdly, silybin inhibits the RNA polymerase I enzyme within the nucleolus, thereby modulating ribosomal RNA synthesis and, consequently, protein synthesis. It also stabilizes cellular membranes by modulating membrane fluidity, inhibiting lipid peroxidation, and decreasing the binding of certain toxins to membrane receptors.

These intracellular events collectively result in the modulation of the cellular redox state, membrane integrity, and regenerative capacity of specific tissues, leading to a system-level physiological modulation of tissue resistance to xenobiotic-induced damage and supporting cellular homeostasis.

Dosage and Administration Information

Flavobion (Silibinin) is administered via two distinct official routes, reflecting its use in both long-term supportive management and acute clinical intervention. The specific route and the corresponding dosage are governed by the clinical context.

Administration Routes and Standard Regimens

Route Primary Use Context Dosing Schedule
Oral (Capsule/Tablet) Long-term supportive use 140 mg Silibinin equivalent, taken three times daily.
Intravenous (IV) Infusion) Acute, severe toxicological events Total daily dose of 20 to 50 mg per kg of body weight per day (mg/kg/d).

Procedural Use Instructions

Oral Administration: For long-term supportive regimens, the 140 mg capsule is typically administered three times daily. The unit dose must be swallowed whole with an adequate amount of liquid, such as water. The total daily intake is standardized at 420 mg.

Intravenous Administration: The IV solution is reserved for acute necessity and requires administration in a supervised, specialist medical setting. The regimen is initiated with an initial 5 mg/kg loading dose given over one hour. The total daily dose is subsequently delivered via IV infusion, administered either continuously over 24 hours or divided into four separate, timed infusions.

Recent Clinical Evidence

Recent Clinical Evidence

The body of research on Flavobion (a compound containing specific flavonoids) is primarily focused on assessing its safety profile and potential role in managing conditions linked to inflammation and vascular health.

Efficacy Data from Pilot Studies

Clinical investigations, including small, randomized, double-blind, placebo-controlled trials, have been conducted to evaluate the effects of flavonoid-based compounds. For example, in a pilot study involving a formulation containing flavonoids and omega-3s for muscular dystrophies, researchers observed a statistically significant difference in certain efficacy endpoints—specifically in the six-minute walk distance and isokinetic knee extension—in participants with Limb-Girdle Muscular Dystrophy (LGMD) and Facioscapulohumeral Muscular Dystrophy (FSHD) compared to the placebo group. Serum markers of muscle damage also showed a reduction in some subjects.

Vascular and Neurological Research

Other clinical research has investigated the impact of flavonoid fractions on specific disorders:

  • Chronic Venous Insufficiency (CVI): Multiple trials support the use of micronized purified flavonoid fraction (MPFF) for managing symptoms of CVI and hemorrhoids, often showing positive results in reducing bleeding, pain, and other related signs.
  • Cognitive Function: Studies are currently underway to confirm the preliminary evidence suggesting that flavonoid compounds may influence cognitive and memory function in individuals with mild to moderate Alzheimer’s disease. These trials are designed to confirm efficacy through changes in cognitive domain functions and symptom severity over time.

Safety and Tolerability

In most reviewed clinical studies, flavonoid compounds, including those similar to Flavobion, were reported to be generally well-tolerated. Documented adverse events across trials are typically mild, with gastrointestinal complaints being the most commonly reported.

Key Studies & References

  1. WHO Monographs on Selected Medicinal Plants - Volume 3 (Used for general context on quality and safety reporting)

Frequently Asked Questions (FAQ)

Common questions about Flavobion (FAQ)

Q: Is Flavobion the same type of medicine as [similar generic drug name]?

Flavobion is a pharmaceutical preparation that contains the active ingredient Silibinin. Official health classifications place it in the category of hepatoprotective agents. This classification defines its core role as supportive therapy for the protection and function of the liver.

Q: Are there any common foods or supplements that should be avoided when using Flavobion?

Official regulatory information includes a mandatory restriction regarding alcohol consumption. For patients whose liver damage is related to alcohol, the official statement confirms that treatment with Flavobion does not substitute for abstention from alcohol. The regulatory label does not generally list specific restrictions for common foods.

Q: Can Flavobion be used by older adults?

According to the official product information, Flavobion is indicated for use in the adult population (18 years and over). Regulatory documents do not typically include specific differential warnings or dosage information for the geriatric population unless particular risks have been formally documented.

Q: Is Flavobion safe to use for a long period of time?

The oral formulation of this medicine is indicated in official documents for long-term supportive use, as part of a regimen to help manage chronic conditions that place ongoing strain on the liver.

Q: How does Flavobion work in the body, in simple terms?

Flavobion's mechanism of action involves protecting cells, primarily by acting as an antioxidant to help neutralize free radicals. It also functions by supporting the liver's own natural defense system, which is crucial for detoxification and cell regeneration.

Q: Is there any research looking at Flavobion for use in children?

Official regulatory documents state that use is not recommended in children under 12 years of age. This restriction reflects the absence of sufficient reliable human data concerning the medicine's safety and effectiveness in this specific population.

Q: Can Flavobion be taken at any time of day?

The official dosing schedule for the oral form requires the medicine to be administered three times daily. While the documentation does not mandate a specific time of day (like morning or night), the standard regimen requires the total daily dose to be divided evenly.

Q: Are there different strengths of Flavobion available?

According to official product information, Flavobion is available in different forms depending on the use. These include the standard capsule or tablet strength for supportive oral use, and a solution reserved for intravenous administration in acute settings.

Q: Is Flavobion a brand name or a generic medicine?

Flavobion is the name of the pharmaceutical preparation (the brand name context). The active ingredient contained within is Silibinin, which is the International Nonproprietary Name (INN), often referred to as the generic name for the compound.

Q: What is the difference between the 'on-label' use and other uses of Flavobion?

The officially recognized 'on-label' purpose is the use approved by regulatory bodies, which defines its role as a hepatoprotective agent for liver support. Other potential applications, such as for specific vascular or neurological conditions, are classified as subjects of ongoing research.

Q: Does taking Flavobion make you feel tired or drowsy?

Regulatory documents assess the likelihood of different adverse effects, and central nervous system effects are part of this review. Drowsiness or fatigue are not typically listed among the most commonly reported or officially documented side effects in the safety profile.

Q: What happens if I forget to take my Flavobion dose?

Official patient information generally provides guidance on managing a missed dose. The common guidance is to skip the forgotten dose and then simply resume the usual schedule. Regulatory information specifies that an extra amount should not be taken to compensate for the missed dose.

Q: Is Flavobion considered a controlled substance?

Flavobion is classified by health organizations as a medicine used for liver therapy. It is subject to medical prescription, which, based on regulatory classification, indicates that the medicine is not considered a controlled substance.

Q: What are the main risks associated with stopping Flavobion suddenly?

Regulatory documents do not contain formal warnings or precautions regarding withdrawal syndromes or rebound effects (a sudden worsening of the condition) associated with abruptly discontinuing the use of this medicine.

Q: Do you need a prescription to get Flavobion?

Yes, according to official regulatory documents, Flavobion is formally classified as a medicinal product. This classification means it is restricted and only available by way of a medical prescription.

Q: Can Flavobion affect my ability to drive or operate machinery?

Regulatory safety documents assess the risk of central nervous system effects that could impair activity. Because central nervous system side effects like drowsiness are not among the commonly reported adverse reactions, regulatory documents do not generally list specific warnings or precautions regarding the ability to drive or operate machinery.

Q: Is there a list of ingredients in Flavobion besides the active one?

Yes, official regulatory documents include a complete list of all ingredients in the medicine. This list, which is mandated by regulatory agencies, contains both the active substance (Silibinin) and the inactive excipients used in the final pharmaceutical product.

Q: Does Flavobion work differently in men versus women?

Regulatory prescribing information, which details the use and safety profile of the medicine, does not provide documented evidence of differential efficacy or safety based on patient gender.

Q: What is the official chemical name of the active ingredient in Flavobion?

The active ingredient, Silibinin (Silybin), has an official chemical designation, such as the IUPAC name. This formal name is typically used in technical regulatory appendices and authoritative reference databases like PubChem.

Q: What is the purpose of the black box warning on Flavobion, if there is one?

The official safety profile for the medicine has been reviewed by regulatory agencies. According to these regulatory summaries, there is no Black Box Warning reported for Flavobion (Silibinin).

Q: Is Flavobion known to interact with herbal supplements like St. John's Wort?

Official product information indicates a caution due to the potential for Flavobion to affect the CYP450 enzyme system, which metabolizes many drugs and supplements. Regulatory documents note the need for caution when co-administering with herbal supplements that act on the same pathway, due to the potential for altered effects.

Q: Does Flavobion interact with hormonal contraceptives?

Due to the potential for Flavobion to affect drug metabolism pathways in the body, official regulatory documents state the need for caution. Co-administration with medicines like hormonal contraceptives may result in altered exposure or action.

Q: Are there documented cases of overdose with Flavobion?

Regulatory safety guidelines require information on what to do in case of an overdose. Official patient information, therefore, provides documented protocols for seeking emergency medical attention regarding this product.

Q: Is it possible to become dependent on Flavobion?

The official safety profile, which has been assessed by regulatory bodies, does not contain warnings or precautions regarding the potential for dependence or abuse of Flavobion (Silibinin).

Q: Why is Flavobion only available by prescription?

Flavobion is officially regulated as a medicinal product for specific therapeutic purposes, such as liver support. The medicinal product status requires professional medical oversight for its administration and monitoring, making it available only by prescription.

Q: Are there any specific laboratory tests required before starting Flavobion?

Since Flavobion is indicated for supportive use in conditions that affect the liver, it is common practice for healthcare providers to request specific laboratory tests before and during treatment. This is done to establish a baseline and allow for proper monitoring of the underlying condition.

How should Flavobion be stored and disposed of?

How to Store and Dispose of Flavobion?

Official regulatory documents define strict conditions for the storage and disposal of Silibinin-containing products like Flavobion to maintain stability and safety.

Mandatory Storage Conditions

The product must be stored at a temperature not exceeding 25 C or below 30 C, as specified in the local labeling. To protect the medicine, it must be kept in the original package with the container tightly closed to shield it from light and moisture. Adherence to these conditions supports the product's official shelf-life.

Safety and Disposal Rules

As mandated by regulation, this medicine must be kept out of the sight and reach of children.

For disposal, unused or expired Flavobion should not be thrown into household waste or wastewater. Instead, the official labeling requires the product to be returned to a pharmacy or disposed of according to local pharmaceutical waste regulations.

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

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