Melfor

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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 Melfor

Property Description
Active Ingredient Meldonium
Form Oral capsules, parenteral solution (injectable)
Pharmacological Class Metabolic Modulator, Cardioprotective Agent
General Purpose Supports cellular energy in organs under stress
Origin Synthetic compound (Latvian Institute of Organic Synthesis)

Melfor is a medicinal preparation containing the active ingredient Meldonium (INN), which is classified by the World Health Organization (WHO) as an "Other cardiac preparation" with the Anatomical Therapeutic Chemical (ATC) code C01EB22. The substance is fundamentally known in pharmacology as a Metabolic Modulator and a Cardioprotective Agent, a classification regarding its role in supporting the cardiovascular system.

The primary general purpose of Meldonium is to serve as an anti-ischemic agent, supporting the function of tissues that are highly sensitive to reduced oxygen supply. Its action involves optimizing how cells utilize energy. This mechanism, based on the inhibition of \gamma-butyrobetaine hydroxylase, redirects metabolism toward oxygen-efficient glucose utilization. This redirection ensures vital organs, particularly the heart and brain, maintain better metabolic function during periods of stress.

Meldonium is a synthetic compound chemically defined as 3-(2,2,2-trimethylhydrazinium) propionate and is a structural analogue of \gamma-butyrobetaine. It is typically supplied as a single-active-ingredient product in oral capsules and a sterile parenteral solution for injection. The drug’s targeted intervention in cellular energy metabolism provides support for improved tissue endurance under low-oxygen conditions, positioning it as a distinct option among agents intended to assist circulation and vitality in adult patients.

What side effects are possible with Melfor?

Possible Side Effects and Safety Information

The safety profile for Melfor (metformin) is documented in regulatory sources based on clinical trials and post-market surveillance. The adverse reactions are classified by frequency and the body systems they affect.

Adverse Reactions and System-Organ Classification

The most commonly reported adverse reactions are gastrointestinal, generally observed at the start of therapy and often resolving over time. Other documented side effects affect metabolism and the nervous system.

Classification Frequency Examples
Gastrointestinal disorders Very Common Diarrhea, nausea, vomiting, abdominal pain, loss of appetite
Nervous system disorders Common Taste disturbance (metallic taste)
Metabolism & nutrition disorders Very Rare Lactic acidosis, decreased Vitamin B12 absorption
Skin disorders Very Rare Erythema (redness), pruritus (itching), urticaria (hives)

Serious Safety Information and Restrictions

Lactic Acidosis is a rare but serious metabolic complication associated with Melfor that has a high mortality rate. Due to the risk of this condition, the medicine is subject to several official restrictions:

  • Contraindications: Use is prohibited in patients with severe renal impairment (e.g., creatinine clearance less than 30 mL/min), acute or chronic metabolic acidosis (including diabetic ketoacidosis), and conditions that can cause tissue oxygen deficiency or impaired kidney function, such as acute heart failure, severe infection, or acute alcohol intoxication.
  • Monitoring: Regulatory agencies require mandatory monitoring of renal function, particularly in elderly patients, because impaired kidney function increases the risk of lactic acidosis.
  • Procedural Discontinuation: The drug must be temporarily withheld before or at the time of an imaging procedure involving iodinated contrast agents or any surgical procedure requiring general, spinal, or epidural anesthesia, and restarted only after conditions are stable and renal function is assessed as normal.
  • Vitamin B12: Long-term use of Melfor may be associated with decreased serum Vitamin B12 levels, which may require monitoring.

Overdose and Emergency Response

Overdose and When to Seek Help

The regulatory documents for Melfor (Meldonium) define the overdose profile primarily through its classification and required actions rather than specific human data. The official prescribing information explicitly states that no data concerning overdose in humans are available.

Officially Documented Toxicity and Risk

Melfor is classified as a medicinal product of low toxicity. Based on official assessment, it is documented that the compound causes no undesirable effects that would be dangerous to patient’s health. This classification forms the foundation for the regulatory guidance on management and risk assessment.

When to Seek Urgent Medical Help

Urgent medical attention is required if a specific physiological manifestation is observed: when arterial pressure considerably deviates from normal. This is the only clinical sign detailed in the official label that mandates medical intervention.

In the event of this sign, the officially mandated emergency response involves using arterial blood pressure regulating medicines. The general management approach is specified as symptomatic treatment. The regulatory information further confirms that no specific antidote is known for Melfor overdose. These statements collectively structure the official guidance for health professionals and patients.

Therapeutic Uses of Melfor

What Melfor Treats: Main Uses and Benefits

The therapeutic use of Melfor focuses on supportive management for certain symptoms associated with reduced oxygen delivery to tissues. It is commonly used for managing symptoms associated with heart conditions, such as angina and heart failure, as well as fatigue, which supports its application in addressing systemic imbalance.

Melfor is relevant for easing symptoms of chronic asthenia (fatigue), functional overload, and is applied in addressing symptoms related to poor circulation in the brain, including chronic dizziness and memory issues.

The primary role of the medication is to offer supportive relief in conditions involving episodic or fluctuating manifestations. It assists with maintaining functional stability and may help patients cope more steadily with symptom fluctuations during physical activity. In essence, it provides support that helps ease the overall symptom burden of tissue stress.


Quick Fact: Relief for Fatigue and Ischemia

Melfor is commonly used to help with symptoms of chronic asthenia and discomfort linked to stable ischemic heart conditions, providing supportive relief during phases when symptoms become more noticeable.

Eligibility and Restrictions for Use

The eligibility for Melfor (Meldonium) is strictly governed by the official criteria documented in government-approved regulatory labels, which classify patients into groups that are approved, restricted, or contraindicated for use.

Eligibility scope

Scope Item Official Regulatory Status
Populations for whom use is allowed Adult patients without contraindications.
Populations for whom use is contraindicated Patients with known hypersensitivity to any component.
Patients with signs of increased intracranial pressure.
Age-related eligibility rules Adults are the approved group; Pediatric use is not recommended due to insufficient safety and efficacy data.
Condition-specific eligibility rules Use in patients with chronic liver or renal disorders requires caution, and dose adjustments may be needed.
Pregnancy and lactation eligibility status Pregnancy: Not recommended. Lactation: Not recommended, as a risk to the infant cannot be excluded.

Eligibility classifications (high-level)

Classification Item Definition as defined in official documents
Eligibility severity classification Contraindicated (Absolute prohibition); Not Recommended (Prohibition due to insufficient data); Caution/Conditional Use (Requirement for dose reduction).

Connection to the overall eligibility profile

Regulatory documents explicitly define the patient populations who must not use Melfor based on absolute contraindications, such as hypersensitivity. They also impose strict limitations on use in patient groups where data is lacking, classifying its use as not recommended for the pediatric population and during pregnancy. Cautionary use is mandated for adults who have impaired liver or kidney function.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Melfor (Meldonium) has documented interaction patterns primarily focused on pharmacodynamic potentiation when co-administered with certain cardiovascular medicines. The official prescribing information states that the drug may intensify the action of several categories, including antihypertensive agents, peripheral vasodilators, antianginal products (such as Glyceryl Trinitrate), and beta-adrenoblockers.

This additive effect, which may result in a slight hypotensive outcome, is the basis for a regulatory restriction: co-administration is not recommended with medicines that produce a severe hypotensive effect and cause related compensatory reactions. Regulatory documents note that the intensification of effects with antihypertensive medicines may be clinically relevant.

Other Interacting Substances and Conditions

Meldonium can be used in combination with standard therapies such as cardiac glycosides, antiarrhythmics, and anticoagulants. There are no explicitly documented significant interactions involving the CYP450 enzyme system or drug transporters. Furthermore, regulatory information notes that food may slightly delay the absorption of Melfor, but it is documented that this does not reduce the overall therapeutic effect of the drug. There are no mandatory requirements in official labeling for time-based separation of administration from food or other medicinal products.

Mechanism of Action

Dual Activation of Cellular Energy Sensors (AMPK and PPAR-gamma)

This domain covers Melfor's primary molecular action: binding to and activating the energy sensor AMPK and the nuclear receptor PPAR-gamma. This activation is the core mechanistic step that initiates the cascade of modified metabolic efficiency and fuel utilization across the body, leading to an adjustment in glucose control.


Multi-Level Regulation of Glucose Production and Uptake

This section describes how the activation of AMPK and PPAR-gamma translates into systemic effects. Melfor inhibits the key enzymes in the liver responsible for glucose production (gluconeogenesis) while simultaneously promoting the movement of glucose transporters (GLUT4) to the cell surface in muscle and fat tissue. The action of inhibiting hepatic output while promoting peripheral uptake results in a net decrease in circulating blood glucose concentration and promotes cellular glucose utilization.


Supporting Mechanisms: Lipid Modulation and Anti-Inflammatory Action

Melfor's mechanism extends beyond glucose control to include lipid metabolism and low-grade inflammatory signaling. Through PPAR-gamma activation, it modulates pathways involved in fat storage and breakdown, modifying the concentration of circulating lipids. Furthermore, the drug suppresses pro-inflammatory signals like NF-kappaB, leading to the attenuation of tissue inflammatory signaling and modulation of systemic insulin response.

Dosage and Administration Information

The administration of Melfor follows specific parameters that define the routes, dosing regimens, and duration. The drug is used in standardized cycles and may be administered in two distinct forms based on the treatment phase.

Administration Domain Description
Routes and Forms Administered as oral hard capsules for maintenance use or as an intravenous (IV) injection for initial, acute courses.
Standard Dosing The maximum daily dose for adults is 1000 mg, with a typical range of 500 mg to 1000 mg daily.
Frequency and Timing The dose is usually taken once daily, or divided into two single doses, and is advised for administration in the morning due to potential stimulating effects.
Course Duration A single course is limited to 4 to 6 weeks. Treatment can be repeated 2 to 3 times per year, separated by adequate break periods.
Administration Context Capsules should be swallowed whole and can be taken with food. The initial IV phase should not exceed 10 to 14 days before transitioning to the oral form.
Population Adjustment Lower doses may be required for patients with documented renal or hepatic impairment. Use is not recommended for children or adolescents.

These protocols ensure the standardized delivery of the medication. If a dose is missed, standard protocols advise against taking a double dose to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Melfor

Evidence for Stable Ischemic Heart Conditions

Research has explored the evaluation of Melfor in adult patients with conditions such as stable angina pectoris and certain types of Chronic Heart Failure (CHF), which are conditions characterized by functional limitations. Studies focusing on these indications primarily include Randomized Controlled Trials (RCTs) and systematic reviews, often examining the compound when it is used as an add-on treatment alongside standard, established heart medications.

Researchers examined patient outcomes related to functional capacity, which were monitored using measures like the 6-Minute Walk Test (6MWT) distance and exercise tolerance duration during structured physical activities. Findings describe patterns observed in the studies where studies reported data on how functional measures and reported symptom scores evolved in the observed populations during the monitored time interval. The current evidence is largely categorized as Moderate, and this difference in regulatory acceptance highlights an area of ongoing discussion regarding the scope of the broader evidence landscape.

Evidence for Chronic Asthenia and Fatigue

Melfor was evaluated in research exploring its use in managing symptoms of chronic asthenia (fatigue) and conditions involving periods of heightened symptoms associated with functional overexertion. Research examined the use of Melfor in adult populations experiencing this type of fatigue, often associated with existing health concerns (somatogenic asthenia).

Studies primarily monitored patient-reported outcomes describing perceived discomfort using standardized tools, such as the Multidimensional Fatigue Symptom Inventory-Short Form. Research highlights changes measured during the study period related to overall fatigue scores and parameters related to self-reported energy levels. The certainty regarding these findings remains low to moderate. As many of the outcomes are inherently subjective and patient-reported, the evidence quality may be tied to the specific methodologies used in smaller or more localized studies.

Research Gaps and What Remains Uncertain

Studies conducted so far primarily focuses on acute or intermediate changes in symptoms and functional measurements over these timeframes (typically three to six months). There is limited information for long-term outcomes that may extend for a year or more. Research has not fully established or characterized the durability of the reported observations.

A primary research limitation frame is the geographic concentration of the existing high-quality data. Furthermore, data for certain groups remain limited. For instance, there is limited information or clinical research available for its evaluation in vulnerable populations, including children and pregnant women. Subgroup findings are uncertain, and further large-scale, international RCTs are needed to expand the generalizability of existing research.

Key Studies & References

  1. Cardiocytoprotection with metabolic drugs - study of the effectiveness of meldonium in ischemic heart disease
  2. Meldonium - Wikipedia (General Evidence, Mechanism, and Regulatory Status)

Frequently Asked Questions (FAQ)

Common questions about Melfor (FAQ)


Q: Is Melfor the same kind of drug as [similar-sounding drug]?

A: Melfor is classified in official drug documents as a Metabolic Modulator and Cardioprotective Agent. This classification indicates that the drug's primary role is to influence cellular energy use. This specific pharmacological class is what sets it apart from many other common drug types used for the cardiovascular system.

Q: How long does it usually take before Melfor starts working?

A: According to pharmacokinetic studies, the medicine reaches its peak concentration in the blood within about 2 hours after being taken orally. While this is the time of peak absorption, the time it takes for a person to notice a clinical effect can vary depending on the individual and the specific condition being addressed.

Q: Can Melfor affect my ability to drive?

A: Based on the official product information and safety reviews, there are no known cases of this medicine having an unfavorable effect on the ability to drive or use machinery. This is the neutral conclusion derived from studies of the drug's documented effects.

Q: Does Melfor interact with common over-the-counter pain relievers?

A: The official regulatory documents mainly describe potential additive effects with certain medicines used for the heart and blood pressure. However, these documents do not explicitly detail significant interactions with common over-the-counter pain relievers that are not specifically mentioned.

Q: Does Melfor show up on standard drug tests?

A: Official labeling for the medicine carries an anti-doping warning. This indicates that the substance is detectable and may cause a positive reaction if tested for during athletic competitions.

Q: Are the side effects of Melfor generally mild?

A: The most common side effects, such as gastrointestinal issues, often start at the beginning of treatment and may resolve over time, as these are often reported to be transient. However, official safety information also describes the need to be aware of a rare but serious risk, such as Lactic Acidosis, which is linked to its use.

Q: Does Melfor cause any changes in mood or personality?

A: Official documents list agitation as a possible side effect of unknown frequency. The documents further note that, while mood changes may be associated with underlying health conditions, a direct link between the medicine and personality changes is considered hardly possible based on the available safety data.

Q: Is there a generic version of Melfor available?

A: The medicine is sold under various trade names, most commonly Mildronate. The active substance, Meldonium, is available in different formulations in certain countries. This suggests the substance is accessible outside of a single proprietary product.

Q: Can Melfor be taken at the same time as vitamin supplements?

A: Official safety information indicates that the long-term use of this medicine may be associated with decreased serum Vitamin B12 levels. Beyond this, regulatory documents do not provide explicit restrictions for taking it with other common vitamin supplements.

Q: What does the FDA label say about Melfor’s purpose?

A: Meldonium is not currently approved by the U.S. Food and Drug Administration (FDA) for any therapeutic use in the United States. Its regulatory approval and primary use are geographically limited to countries in Eastern Europe and Eurasia.

Q: How long does Melfor stay in the body after stopping it?

A: The elimination half-life of the medicine is reported to be about 18 hours following a single oral dose. This means it takes approximately 18 hours for the amount of medicine in the body to decrease by half. The half-life may be different when the medicine is taken over multiple administrations.

Q: Can Melfor affect fertility?

A: Regulatory documents explicitly state that no human data are available to determine the effect of the medicine on fertility. Therefore, the official safety information cannot characterize any potential impact on reproductive health.

Q: What is the most common reason a doctor might prescribe Melfor?

A: The primary official therapeutic indication for Melfor is the adjuvant treatment of mild chronic cardiac insufficiency. This use is intended to help improve a patient's clinical status, overall functional capacity, and quality of life as an addition to standard heart medications.

Q: What should be done if side effects from Melfor are noticed?

A: The official patient information advises that if side effects are noticed, consulting a doctor or pharmacist is the appropriate action for guidance. This ensures any concerns are managed by a qualified health professional.

Q: Are there specific lab tests needed before starting Melfor?

A: Since the medicine is contraindicated (prohibited) in individuals with severe renal impairment, official guidance states that renal function must be assessed. Regulatory assessment to determine eligibility typically involves a lab test, which is necessary before starting and for monitoring during treatment.

Q: Does Melfor have any known long-term risks?

A: Official safety information indicates that long-term use may be associated with decreased serum Vitamin B12 levels, which may need to be assessed by a health professional. Furthermore, the existing research has not fully characterized outcomes that extend for a year or more, highlighting a gap in current knowledge about its long-term use.

Q: Is it normal to feel a change in energy levels when starting Melfor?

A: Regulatory information references morning administration, which is due to the possible stimulating effect of the medicine. This is a recognized property that may result in a perceived change in energy levels after administration.

How should Melfor be stored and disposed of?

The official regulatory documents specify the exact conditions required to maintain the stability and quality of Melfor.

Storage Conditions

Melfor must be stored at a temperature not exceeding 25 C and kept in the original container. The packaging must be sealed to protect the medicine from moisture and light. It is prohibited to freeze the product unless the label specifically indicates otherwise. The product must always be stored out of the sight and reach of children.

Disposal Instructions

Do not throw away unused or expired Melfor via wastewater or household waste. Discarding the medicine must be done according to local regulations. Consumers should utilize an official drug take-back program where available, or follow regulatory home disposal instructions, which require mixing the product with an unpalatable substance and sealing it before placing it in the trash.

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

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