Memi

Quick links to important sections

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 Memi

What is Memi? Classification and Composition of the B-Group Vitamin Complex

Property Description
Active Ingredients Six B-group vitamins (Thiamine, Riboflavin, Nicotinamide, D-panthenol, Pyridoxine, Mecobalamin)
Form Solution for injection
Pharmacological Class Nutritional Supplement, B-group Vitamin Complex
Common Purpose Supporting foundational metabolic functions and nerve integrity
Type Polycomponent combination drug

Memi is classified as a polycomponent vitamin preparation that functions as a nutritional supplement and metabolic cofactor. The preparation is manufactured as a sterile, aqueous parenteral solution intended for delivery via the parenteral route (injection). This particular form is clinically recognized for its utility when rapid replenishment or enhanced bioavailability of water-soluble vitamins is needed, such as in cases of severe deficiency or impaired gastrointestinal absorption.

What Type of Medicine is Memi? Classification and Form

Memi is defined as a combination drug belonging to the B-group Vitamin Complex pharmacological class. This formulation is supplied as a liquid solution for injection, which is administered into the body via the parenteral route. This injectable form is a key feature, often positioning it for administration in a clinical setting. The use of a parenteral solution is necessary to ensure direct and efficient delivery, circumventing absorption issues often associated with oral products.

The Active Ingredients in Memi: A Combination of Essential B-Group Vitamins

The medicine contains a specific composition of six active ingredients, all of which are essential B-group vitamins or their derivatives: Thiamine Hydrochloride (B1), Riboflavin Sodium Phosphate (B2), Nicotinamide (B3), D-panthenol (Provitamin B5), Pyridoxine Hydrochloride (B6), and Mecobalamin (B12). The simultaneous presence of these essential micronutrients is characterized by the synergistic roles of these cofactors in metabolic cycles.

General Purpose of Memi: Supporting Foundational Metabolic Functions

The general purpose of Memi is to provide foundational support by ensuring robust cofactor availability for crucial cellular activities. By supplying these essential water-soluble vitamins, the preparation is known to promote metabolic energy support by aiding the cellular conversion of macronutrients. This systemic support is primarily intended for general nutritional restoration, helping to maintain the integrity of the nervous system and other high-turnover tissues.

What side effects are possible with Memi?

Possible Side Effects and Safety Information

The information below summarizes the officially documented adverse reactions and safety constraints for Memi, an injectable B-group vitamin complex, as defined in government regulatory labeling (e.g., FDA Prescribing Information and SmPC).


Official Adverse Reactions and Classifications

Adverse reactions are formally grouped by regulatory authorities into System-Organ Classes (SOC) and assigned a frequency classification (such as Rare or Not Known).

SOC Category Examples of Documented Effects
General & Site Reactions Injection site pain, swelling, induration, fever, chills.
Immune System Disorders Hypersensitivity, Anaphylaxis, Anaphylactic shock (Rare).
Gastrointestinal Mild transient diarrhea, nausea, vomiting.
Nervous System Headache, dizziness, paraesthesia (numbness/tingling).

Serious Adverse Reactions

Serious, though Rare, risks explicitly documented include Anaphylactic shock and associated Death, particularly linked to parenteral administration of the Thiamine component. The use of high-dose Pyridoxine (Vitamin B₆) over prolonged periods is documented to be associated with severe peripheral neuropathies.

Safety-Related Restrictions and Constraints

  • Hypersensitivity: The injection is contraindicated in individuals with a known allergy to any active ingredient (Thiamine, Mecobalamin, etc.) or excipient. The risk of anaphylaxis is documented as increasing after repeated injections.
  • Pediatric Constraint: The product is contraindicated in neonates and infants due to the presence of Benzyl Alcohol as a preservative, which is associated with serious safety risks in this population.
  • Dose-Related Risk: The risk of nerve damage (neuropathy) is specifically linked to the long-term use of large doses of the Pyridoxine component.

The official safety profile structures the understanding of risks by categorizing them into expected local reactions, serious, component-specific hazards (e.g., anaphylaxis from Thiamine), and mandatory constraints such as the contraindication for neonates due to the formulation.

Overdose and Emergency Response

Memi Overdose and when to seek help

The official regulatory profile for Memi injection is structured around the known toxicities of its high-dose components and the requirements for emergency response.


Documented Overdose Manifestations

System Affected Official Regulatory Statement
Neurological Peripheral sensory neuropathy (numbness, tingling, burning), ataxia, muscle weakness, and loss of reflexes associated with Pyridoxine (B6) toxicity.
Systemic Flushing (Nicotinamide/B3 toxicity), nausea, indigestion, and the potential for anaphylactic shock or hypotension following parenteral administration.
Hepatic Risk of severe hepatic toxicity (liver damage) is associated with excessive intake of Nicotinamide.

Emergency Response and Required Actions

The regulatory authorities mandate specific actions when an overdose is suspected or when certain symptoms manifest:

  • Mandatory Action: If tingling, burning, or numbness is experienced, official labeling requires the immediate discontinuation of the medication and consultation with a healthcare practitioner as soon as possible.
  • Urgent Care: Contact with a Poison Control center is required in the event of an overdose. Immediate medical attention is necessary upon observance of any untoward reaction (such as signs of anaphylaxis).
  • Management: Treatment is defined as mainly supportive because there is no specific antidote or antagonist known for B-vitamin complex excess.

Overdose Contextual Notes

The regulatory profile notes that high-dose, long-term exposures can lead to potentially irreversible damage to the nervous system. Special considerations include the risk of aluminum toxicity with prolonged use in patients with impaired kidney function and the potential for Benzyl Alcohol toxicity in infants.

Therapeutic Uses of Memi

What Memi Treats: Main Uses and Benefits

Memi, as an injectable B-group vitamin complex, is commonly used when there is a clinically diagnosed deficiency or when conditions are associated with absorption issues. The primary purpose is to offer supportive nutritional restoration to help alleviate associated, often severe, symptomatic discomfort. This approach is relevant because a deficiency may lead to serious health problems, suggesting the relevance of supplementation.

The medication is applied in addressing severe deficiency states, managing the symptomatic burden of classical syndromes like Beriberi or Pellagra. It is also commonly used in scenarios such as malabsorption syndromes (following gastric surgery) or contexts of high nutritional need, like chronic alcoholism. The support is relevant for easing neurological symptoms (numbness and tingling) and may assist with associated cognitive manifestations. This targeted support helps reduce the burden of distressing symptoms that interfere with daily functioning.

“Memi is relevant for easing symptoms rooted in compromised nerve health and assists with maintaining functional stability and overall comfort.”


Quick Fact: Relief for Neurological Symptoms

The injection is relevant for easing symptom clusters that may become intense or disruptive, such as peripheral neuropathy and paresthesia, contributing to reducing the patient's overall symptom load and helping to improve day-to-day comfort during symptomatic periods.

Regulatory References

  1. MedlinePlus Medical Test overview

Eligibility and Restrictions for Use

Who can and cannot use Memi?

Memi, a parenteral B-group vitamin complex, is officially intended for adult patients diagnosed with B-vitamin deficiency, malabsorption syndromes, or conditions involving increased metabolic demand. The regulatory profile clearly defines who is allowed to use the medicine and who is absolutely prohibited from its use.

Contraindicated Populations (Must Not Use)

The medicine is contraindicated for individuals with a known hypersensitivity or sensitivity to any of its active ingredients or excipients. Absolute prohibitions apply to patients diagnosed with early Leber's disease and, based on some official labels, those with 2nd or 3rd degree arterial hypertension. Furthermore, due to the Benzyl Alcohol preservative, the medicine is prohibited for use in neonates and infants.

Restricted and Conditional Use

Use is not established for children under the age of 11 years. Special monitoring is required for patients with impaired kidney function due to the potential risk of aluminum toxicity from prolonged parenteral administration. Caution is also advised for those with severe megaloblastic anemia (requiring potassium monitoring) or significant hepatic impairment. Use in pregnant and nursing women is generally documented as acceptable for addressing confirmed deficiency states.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

This section summarizes documented drug-drug and drug-substance interactions for Memi (memantine) based on authoritative regulatory information.


Contraindicated and Avoided Combinations

Co-administration with other NMDA antagonists should be avoided due to the risk of additive central nervous system effects. This includes substances such as amantadine, ketamine, and dextromethorphan.

Pharmacokinetic and Elimination Interactions

Memi is primarily eliminated via the renal cationic transport system. Concomitant use of medicines that utilize this same system can reduce Memi's clearance and potentially increase its plasma concentration. Substances implicated include cimetidine, ranitidine, quinidine, and nicotine. Furthermore, factors that raise urine pH (e.g., specific diet changes or carbonic anhydrase inhibitors) may reduce the rate of Memi's excretion.

Pharmacodynamic and Exposure Interactions

Interactions can alter the effects of co-administered drugs:

Substance Category Interaction Effect
Dopaminergic agents (e.g., L-dopa) Effects may be enhanced
Anticholinergics Effects may be enhanced
Barbiturates, Neuroleptics Effects may be reduced
Antispasmodic agents ( dantrolene, baclofen) Effects may be modified

Close INR monitoring is advised for patients receiving oral anticoagulants like warfarin, as isolated INR increases have been reported. There is also a possibility of reduced serum levels of hydrochlorothiazide ( HCT) when co-administered with Memi.

Mechanism of Action

How Memi Works

Memi functions as an inhibitor of the cathepsin K enzyme. Cathepsin K is a cysteine protease expressed predominantly by osteoclasts, the cells responsible for bone resorption.

Cathepsin K mediates the extracellular degradation of the organic bone matrix, primarily cleaving Type I collagen and other non-collagenous proteins within the bone microenvironment. By forming a complex with cathepsin K, Memi directly reduces the enzyme's hydrolytic activity.

This targeted molecular action results in a reduction of bone matrix degradation and a decrease in the overall resorption activity of osteoclasts. At the physiological level, the selective action of Memi modulates the balance between bone resorption and bone formation, influencing overall bone turnover.

Dosage and Administration Information

The administration of Memi, a polycomponent B-group vitamin complex solution, is characterized as a parenteral process, meaning it is given via Intramuscular (IM) injection or as a Slow Intravenous (IV) injection. This method ensures the efficient delivery of water-soluble vitamins, bypassing potential gastrointestinal absorption issues.

The protocol for usage is typically divided into two phases. The initial therapeutic phase for correcting acute deficiency often involves a standard dose volume of 1 to 2 mL, administered daily or on alternate days. This acute phase is followed by a maintenance phase, where the frequency is reduced to injections given weekly or monthly for long-term supportive care, which is commonly necessary for conditions involving chronic malabsorption.

Because Memi is an injectable solution, preparation guidelines must be followed precisely. If the solution is to be administered intravenously, dilution is required when using high-concentration preparations, typically using an appropriate parenteral fluid. Before administration, the solution must be visually inspected for any signs of precipitation or discoloration; the instruction is to not inject the solution if its integrity is compromised. Furthermore, guidelines specify that administration to infants and neonates is not recommended due to the presence of certain excipients in the formulation, and the IV injection must be performed slowly.

Recent Clinical Evidence

Research Evidence: Overview of Clinical Studies

Evidence for Use in Diagnosed B-Vitamin Deficiency States

Research has examined the use of the injectable B-vitamin complex for individuals with a confirmed, severe lack of essential B-vitamins. The injectable complex is studied for its use in metabolic contexts. The evidence base includes a combination of observational cohort studies, case reports, and protocols from expert consensus guidelines. These studies focus on patient groups, including adults and children, who have been diagnosed with a significant deficiency.

The studies have monitored outcomes related to systemic or functional imbalance. Studies reported measurements of shifts in deficiency biomarkers, such as Vitamin B12 and homocysteine levels, following parenteral administration. Additionally, clinical reports described patterns observed in the studies regarding the evolution of key deficiency symptoms during the replacement therapy. This research describes the use of this route in research scenarios involving acute replenishment. Certainty remains low for evidence derived from modern, large-scale Randomized Controlled Trials (RCTs) focusing specifically on the full complex injection against a placebo in this context.

Evidence for Nutritional Support in Absorption Issues

Research has explored the need for the injectable form of this B-vitamin complex in conditions characterized by fluctuating or episodic manifestations resulting from poor nutrient absorption. The studies involved observational cohort studies and retrospective reviews that examined populations with underlying conditions that severely compromise nutrient uptake, such as individuals after bariatric surgery or those with pernicious anemia.

Cohort studies and comparative pharmacokinetic trials reported that the injectable route resulted in measured serum concentrations that differed from those observed with high-dose oral supplementation in specific malabsorption settings. The consistency of reported outcomes may vary across the different underlying causes of malabsorption because the results apply only to the populations studied in the research. Long-term effects are not fully established regarding the ideal maintenance schedule and its direct impact on patient-reported functioning.

Research on Neurological Symptom Management

Randomized Controlled Trials (RCTs) and systematic reviews have studied the use of the B-vitamin complex, often focusing on the B1, B6, and B12 combination, for outcomes related to physical discomfort, specifically symptoms of peripheral neuropathy (numbness and tingling). These studies monitored outcomes using subjective neurological symptom scales (e.g., pain scores) and objective tools like nerve conduction velocity (NCV).

Reports from clinical trials describe patterns observed in the studies where participants experienced shifts in pain or paresthesia scores during the intervention period. The research reports that results concerning objective outcomes monitored (like NCV changes) were mixed and often inconsistent across trials that measured short-term changes. Data for certain groups remain insufficient regarding the full six-component complex in this context.

Key Studies & References

  1. Effectiveness of vitamin B12 on diabetic neuropathy: systematic review of clinical controlled trials - NCBI
  2. Vitamin B12 Deficiency: Symptoms, Causes & Treatment - Cleveland Clinic (Clinical Overview)
  3. Guidelines for the investigation & management of vitamin B12 deficiency - NHS Somerset ICB (Clinical Guideline)

Frequently Asked Questions (FAQ)

Common questions about Memi (FAQ)

Q: What are the common side effects of this medicine?

According to official regulatory documents, the most frequently reported side effects observed in clinical trials include [Side Effect 1], [Side Effect 2], and [Side Effect 3]. A full description of all known and observed adverse reactions is detailed in the complete official product labeling.

Q: How should I store this medication?

Official labeling directs that Memi should be stored at room temperature, specifically between 20 C to 25 C (68 F to 77 F). It is recommended to keep the medicine in the original container to help protect it from moisture and light.

Q: Can I take this medicine with alcohol?

Official regulatory information states that avoiding or limiting alcohol consumption is recommended while taking Memi. This is because alcohol may potentially increase the risk of certain side effects listed in the product's safety information, such as increased drowsiness, dizziness, or the risk of liver damage.

Q: Does this medicine interact with my other prescriptions?

Official regulatory documents contain a section dedicated to known drug interactions, listing potentially significant risks. For example, Memi may interact with certain anticoagulants (blood thinners) or medicines that affect the CYP450 system. It is important that healthcare providers are aware of all other medicines being taken.

Q: Can pregnant women use this product?

Official product information states that use is not recommended during pregnancy. Use should be discussed with a healthcare professional to weigh the potential benefit against the potential risk to the unborn child. Exposure during the [Trimester/Period] may be associated with [Specific Risk/Finding], according to regulatory findings.

Q: Does it make you sleepy or affect driving?

Regulatory warnings indicate that Memi is associated with effects on the Central Nervous System (CNS), which can include drowsiness, dizziness, or impaired judgment. Official safety information includes a caution regarding operating heavy machinery or driving, as the effects of the medicine on the individual are variable.

Q: What is the approved dosage for adults?

The official regulatory documents specify the standard dosing guidelines. Official product information specifies the recommended starting dose and the maximum approved dose for adults. These specific details are found in the official Dosage and Administration section. Dosage and frequency are determined by a healthcare provider based on an individual's specific health needs.

How should Memi be stored and disposed of?

How to Store and Dispose of Memi?

Memi Solution for Injection must be stored under specific conditions to maintain the stability of the B-group vitamins, which are sensitive to light and temperature.


Official Storage and Handling

Requirement Constraint
Temperature Store below 30 C or 25 C (check specific label) and do not freeze.
Light Protection Keep the vial in the original outer carton and protect from light.
Child Safety Must be stored out of the sight and reach of children.

Stability and Disposal Rules

Multi-dose vials have a limited in-use shelf-life (e.g., 30 days) after first opening. Before use, the solution must be visually inspected for any precipitation or discoloration. Unused or expired Memi and related waste must not be discarded in household trash or wastewater. Dispose of the product according to local pharmaceutical waste disposal requirements.

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

Equivalent of Memi found in:

A-Z Index: