Стимол

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Стимол

Treatment option: Acidosis, Fatigue

Medically reviewed

Laura Arias

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 Стимол

Overview

Стимол (Stimol) is a metabolic agent used to manage symptoms of fatigue and physical weakness. It belongs to a group of medicines known as amino acids and is primarily used to address functional asthenia, a condition characterized by a lack of energy and general exhaustion that is not caused by an underlying organic disease.

Composition and Mechanism

The active substance in this preparation is citrulline malate. This compound is a combination of two distinct components that play specific roles in the body's energy metabolism:

  • Citrulline: An amino acid involved in the urea cycle, which helps the body process and eliminate metabolic waste products like ammonia.
  • Malate: A component of the Krebs cycle (citric acid cycle) that facilitates the production of cellular energy.

By supporting these metabolic pathways, the preparation aims to assist the body in recovering from states of fatigue and muscle soreness associated with the accumulation of metabolic byproducts.

Applications

This agent is typically used for the symptomatic relief of various forms of tiredness, including:

  • Physical Fatigue: Recovery from intense exercise or strenuous activity.
  • Post-Illness Recovery: Supporting the body during the convalescence period following an infection or surgery.
  • Functional Weakness: General lack of energy associated with lifestyle factors or temporary physiological stress.

It is designed to support natural metabolic recovery processes without acting as a stimulant on the central nervous system.

Regulatory References

  1. Ammonia Levels: MedlinePlus Medical Test

What side effects are possible with Стимол?

Possible Side Effects and Safety Information

The active component of Stimol, Citicoline, is generally considered to have a favorable safety profile with very low toxicity in humans. Adverse effects are typically mild and transient, primarily involving the digestive and nervous systems.

Adverse Reactions

Side effects are categorized by the system organ class:

  • Gastrointestinal Disorders: The most commonly reported effects include nausea, stomach pain, diarrhea, and, less frequently, loss of appetite.
  • Nervous System Disorders: Possible effects include headache, dizziness, insomnia, agitation, and general weakness.
  • Cardiovascular Disorders: Transient changes in blood pressure, such as a fleeting hypotensive effect (low blood pressure), and irregular heartbeat have been documented as rare occurrences.
  • Immune System Disorders: Rare cases of hypersensitivity or allergic reactions (rash, itching, or swelling) are possible.

Safety Considerations and Restrictions

Stimol (Citicoline) is subject to specific regulatory limitations:

  • Contraindications: The use of Citicoline is contraindicated in individuals with known hypersensitivity to the drug or any of its components. It is also contraindicated in patients with hypertonia of the parasympathetic nervous system.
  • High-Dose Caution: Caution is advised, and dose limitations (e.g., typically not exceeding 1000 , mg/day) are relevant in cases of persistent intracranial hemorrhage, as large doses may potentially aggravate an increase in cerebral blood flow.
  • Pregnancy and Lactation: Safety and efficacy have not been sufficiently established in pregnant or breastfeeding women. Use in these populations is generally advised only after careful assessment of benefits versus potential risks.
  • Driving and Operating Machinery: Due to the potential for dizziness or other central nervous system effects, caution is recommended when performing tasks requiring mental alertness, such as driving or operating machinery.

Overdose and Emergency Response

Стимол Overdose and When to Seek Help

The official regulatory approach to Citrulline Malate high-dose ingestion focuses on managing immediate clinical manifestations rather than a defined, severe acute overdose syndrome. The official information available from authoritative government sources outlines specific manifestations and the mandated emergency responses.

Manifestation Profile Official Regulatory Statement
Documented Clinical Signs High-dose ingestion may present primarily with localized gastrointestinal symptoms, including nausea and diarrhea. Documented adverse effects at high doses also include systemic signs such as slightly reduced blood pressure (hypotension).
Severe Outcomes There is no specific, life-threatening neurological or metabolic overdose syndrome formally documented in the official regulatory product information for this compound.

Management for high-dose ingestion is mandated to be strictly symptomatic and supportive. Regulatory documents confirm that no specific pharmacological antidote is known to counteract the effects of the active substance, thus all care focuses on stabilizing the patient and mitigating the symptoms that arise.

Immediate medical attention is required upon the onset of any severe, persistent, or systemic reaction. This urgency is essential for professional monitoring, particularly if manifestations like pronounced hypotension or unresolving gastrointestinal distress develop, as hospital observation may be necessary to ensure stability and appropriate supportive care.

Therapeutic Uses of Стимол

What Стимол treats: Main Uses and Benefits

The therapeutic utility of Стимол (Citrulline Malate) is generally centered on its role as an antiaesthenic agent and functional capacity restorer, applied across specific clinical and physiological contexts where fatigue and weakness may interfere with daily functioning. The compound is used in managing asthenia and assisting the recovery of muscle function after acute diseases.

Стимол is commonly used in situations involving symptoms of persistent, non-specific functional asthenia, generalized tiredness, and states of reduced vigor during periods of convalescence. The medication offers symptomatic relief that helps patients cope more steadily when symptoms interfere with routine activities, contributing to easing the overall symptom load.

“The medication is considered relevant when short-term symptomatic assistance is needed to manage symptoms that create noticeable physiological strain.”

This supportive management contributes to improved comfort during periods of heightened symptoms. It is considered relevant in contexts involving heightened systemic burden, such as the post-recovery period after major surgical procedures or infections, and following intense physical effort where muscular fatigue and soreness are present.


Quick Fact: Relief for Functional Asthenia Стимол is applied in conditions characterized by periods of heightened symptoms of weakness and is relevant for managing symptom clusters that may become intense or disruptive.

Eligibility and Restrictions for Use

Who Can and Cannot Use Стимол (Citrulline Malate)

Official regulatory documentation defines the eligible population for Стимол based on age, contraindications, and specific physiological states. The medicine is primarily intended for use by adults and children from 6 years of age. Use is not recommended for children under this minimum age threshold.

Contraindications and Restrictions

Category Regulatory Status
Absolute Contraindication Contraindicated in patients with known hypersensitivity to Citrulline Malate or any of the product’s excipients.
Pediatric Eligibility Not recommended for children under 6 years of age.
Pregnancy Use is preferably to be avoided (Regulatory Caution).
Lactation (Breastfeeding) Use must be avoided (Lack of data on passage into breast milk).
Dietary Restriction Caution is required for patients following a strict hyposodium (salt-free) diet due to the formulation's documented sodium content.

Official labeling does not document specific restrictions or dosage adjustments related to hepatic or renal impairment.

What should I know about interactions with other medicines?

The official interaction profile for Стимол (Citrulline Malate) is characterized by a general absence of significant pharmacokinetic restrictions and formally prohibited combinations in regulatory labeling. Citrulline Malate is primarily a metabolic agent, and its interaction pattern is defined by a single documented pharmacodynamic effect, rather than complex changes in drug exposure.

Official Interaction Patterns

Interaction Type Interacting Agents Official Regulatory Description
Pharmacodynamic Agents that lower blood pressure, including Antihypertensive drugs and Phosphodiesterase-5 (PDE5) inhibitors. Co-administration may result in additive hypotensive effects, as Citrulline influences the Nitric Oxide pathway, which promotes vasodilation.
Pharmacokinetic CYP450 enzymes, Drug Transporters (e.g., P-gp) No warnings or restrictions are documented in regulatory sources concerning altered drug metabolism or transport, leading to altered plasma concentration of co-administered medicines.

Regulatory Constraints and Profile Summary

Regulatory documents do not list any formally contraindicated combinations that prohibit co-administration with Stimol. The absence of specific warnings concerning metabolic or drug transporter activity means that Citrulline Malate does not require mandatory timing separation rules for administration with food or other products. The official regulatory classification of the interactions focuses on the necessary vigilance regarding the potential combined effect on blood pressure, a high-level monitoring recommendation consistent with a profile that lacks significant metabolic or transporter-related drug interaction risks.

Mechanism of Action

Стимол is an organic salt composed of L-citrulline and malate. The L-citrulline component acts as a metabolic precursor, primarily targeting the renal proximal tubules, where it is converted into L-arginine through the citrulline-arginine cycle via the sequential actions of argininosuccinate synthetase and argininosuccinate lyase. This conversion increases systemic L-arginine bioavailability. L-arginine is the substrate for the enzyme nitric oxide synthase (NOS), which catalyzes the production of nitric oxide (NO) in endothelial cells. NO acts as a signaling molecule, diffusing into vascular smooth muscle cells where it activates soluble guanylate cyclase (sGC), increasing the intracellular concentration of cyclic guanosine monophosphate (cGMP). The downstream cascade involves cGMP-dependent protein kinase, leading to reduced intracellular calcium concentration and subsequent smooth muscle relaxation. This action results in systemic vasodilation and increased blood flow to peripheral tissues. Concurrently, L-citrulline facilitates the urea cycle in the liver, promoting the conversion of ammonia into urea, thereby enhancing nitrogenous waste clearance. Malate, the counter-ion, is an intermediate of the tricarboxylic acid (TCA) cycle, contributing to the support of oxidative phosphorylation for adenosine triphosphate (ATP) synthesis.

Dosage and Administration Information

How to Use Стимол: Administration Guidelines

This section outlines the standardized procedures for administering Стимол (Citrulline Malate), based on prescribing information for its pharmaceutical use. The instructions detail the route, dosing, preparation, and duration of the treatment course.


Administration Scope

Feature Guideline
Route of Administration Oral route (ingestion).
Dosage Form and Strength Oral Solution, typically 2.0 g of Citrulline Malate per unit-dose sachet or ampoule.
Adult Dosing Schedule 3 unit doses per day, administered in divided intakes.
Pediatric Dosing Schedule Children aged 6 years and older are prescribed 2 unit doses per day, administered in divided intakes.
Timing in Relation to Meals Must be taken with meals for proper administration.
Preparation Requirement The entire content of the unit dose must be diluted in a full glass of water or a sweetened beverage before ingestion.
Course Duration A single course of treatment is generally limited to a maximum of four weeks (one month).

Procedural Context

The administration of Citrulline Malate is governed by a precise protocol. The liquid form requires mandatory dilution in water prior to consumption, a key instruction tied directly to proper use. The treatment course is defined as a fixed, short-term duration, which dictates the overall use pattern over time. Furthermore, the guidelines establish separate daily dose counts for adults and children, ensuring age-specific adherence to the established regimen.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Стимол (Citrulline Malate)

Research Evidence for Functional Asthenia and Generalized Tiredness

Стимол (Citrulline Malate) was evaluated in studies exploring symptoms related to functional asthenia and persistent, generalized tiredness. The original evidence base includes short-term Randomized Controlled Trials (RCTs) and various observational studies that were applied in studies examining patient-reported experiences of fatigue. The populations was evaluated in included clinical patients marked by functional limitations and those recovering during a convalescence period.

Researchers focused on outcomes related to systemic or functional imbalance, such as how symptoms changed on self-assessment scales. Studies monitored changes in patient-reported outcomes, such as subjective feelings of tiredness and vigor, based on self-assessment scales. This evidence helps contextualize how patients reported their experience during the study period.

However, the evidence base for this specific, generalized tiredness indication is characterized by limited information for long-term outcomes and a lower number of recent, large-scale international trials. Sample sizes were modest in many of the foundational studies, and findings were mixed regarding the consistency of reported changes across all populations. Therefore, the certainty remains low concerning the application in long-term exploration of chronic functional asthenia.


Research Evidence for Muscular Fatigue and Physical Endurance

Citrulline Malate was evaluated in a separate, extensive body of research related to muscular fatigue and the body’s ability to perform intense exercise. Research examined this aspect primarily through numerous acute and short-term Randomized Controlled Trials (RCTs), and the findings have been aggregated in several systematic reviews and meta-analyses. These studies focused on outcomes monitoring physiological strain or stress related to athletic performance.

The populations was observed in included healthy young adults, resistance-trained individuals (such as athletes), and recreationally active people. Studies monitored objective measures like the total number of repetitions completed during high-intensity exercise and physiological markers associated with metabolic stress. Data show patterns related to measured changes during the study period in metrics like total work performed or the perceived effort required to complete a task.

Nevertheless, follow-up durations were limited in most of this research, which often focused on the immediate, acute response to the substance before or during exercise. The evidence quality varies across studies, and subgroup findings are uncertain, as results can differ significantly based on the training level of the participant and the type of physical activity performed. The effects of long-term supplementation on sustained athletic performance are not fully established.


Understanding Long-Term Studies and Durability of Effect

The research primarily available for Citrulline Malate is focused on short-term symptom changes or studies observing responses over defined time intervals lasting typically two weeks or less, especially in the performance context. Studies related to generalized functional asthenia also often cover short-term or episodic symptom patterns during recovery.

Research does not provide insight into whether individual response patterns are maintained over months or years of use, as trials extending beyond a few weeks are less common. This means that the long-term effects are not fully established, and there is limited information for long-term outcomes related to maintaining functional capacity or continuous relief from chronic symptoms. The research provides insight into short-term changes, but comparative evidence is lacking for extended treatment schedules.


Evidence in Different Populations and Groups Studied

The research base has primarily focused on specific groups. Studies for asthenia was conducted during periods of increased symptom activity mostly in adults, including those undergoing convalescence. For physical endurance, the bulk of the evidence is concentrated in healthy young adults and trained athletes.

Data for certain groups remain insufficient. For instance, there is little published research that was observed in children or adolescents with asthenia. Similarly, subgroup findings are uncertain for older adults or individuals with underlying comorbidities, as results apply only to the populations studied, which are often young and healthy. The evidence available to regulators is part of the research record but does not characterize the response patterns across all potential user groups.


Summary of Evidence Gaps and Areas of Research Uncertainty

Evidence is limited in several key areas, despite the volume of research available, particularly for the generalized asthenia indication. A primary limitation is that follow-up durations were limited, meaning that the durability of any observed response is not fully established. Furthermore, the definition and measurement of the outcomes, such as asthenia, may vary across the studies, leading to findings that were mixed.

Research provides context but not individual predictions. The available data helps contextualize how patients reported their experience under the specific conditions of the trials, but it highlights that certainty remains low in areas where robust, long-term, multi-center RCTs are absent. Research is ongoing in some areas to better understand the short-term measured changes, but the gaps in long-term data and evidence for certain patient groups persist.

Key Studies & References

  1. [Autonomic disorders in persons with asthenic syndrome and their correction with citrulline malate].
  2. [Use of citrulline malate (stimol) in patients with autonomic dystonia associated with arterial hypotension].
  3. Scientific Opinion on the substantiation of a health claim related to citrulline malate and faster recovery from muscle fatigue after exercise pursuant to Article 13(5) of Regulation (EC) No 1924/2006 (European Food Safety Authority Opinion)

Frequently Asked Questions (FAQ)

Common questions about Стимол (FAQ)


Q: Does taking Стимол affect sleep?

Official documents mention that insomnia, or difficulty sleeping, is described as a possible adverse effect related to the nervous system. This is noted in the official safety documentation detailing possible adverse effects.

Q: Can Стимол be taken long-term?

According to administration guidelines, a standard course of treatment is generally limited to a maximum of four weeks (one month). The existing research base contains limited information for long-term outcomes beyond this period, meaning effects over many months or years are not fully established.

Q: Does Стимол interact with medications for depression or anxiety?

Official regulatory documents focusing on drug-drug interactions do not list specific restrictions related to how Стимол affects the metabolism or transport (pharmacokinetics) of many common medicines, including those for depression or anxiety. The interaction profile is generally defined by effects on blood pressure.

Q: Are there different forms of Стимол available (e.g., liquid, tablet)?

The pharmaceutical form of Стимол is specified as an oral solution, meaning it is a liquid preparation. It is typically supplied in individual, readily measurable unit-dose sachets or ampoules for ingestion.

Q: Is the main active component in Стимол naturally occurring?

The active ingredient, Citrulline Malate, is defined as a derived organic salt. It is formed by combining L-Citrulline, which is classified as a non-essential amino acid, with Malic Acid (Malate).

Q: What does official guidance say about using Стимол if I have diabetes?

Official documents specify that the formulation is typically sugar-free. This characteristic is noted as relevant for individuals monitoring their sugar intake.

Q: Is it necessary to take Стимол with food?

Administration guidelines published in the official documents indicate that the medicine must be taken with meals. This administration condition is specified in the official guidelines.

Q: Is Стимол used for energy or fatigue?

Стимол is pharmacologically classified as an antiaesthenic agent and a metabolic regulator. Its general purpose is defined as supporting the body against the feeling of increased fatigue and recovery from generalized functional asthenia.

Q: Can someone who is physically active use Стимол?

Research evidence has focused on the compound’s effects in populations including healthy young adults and resistance-trained individuals. Studies in this area have primarily examined outcomes related to muscular fatigue and intense physical effort.

Q: Are there any dietary restrictions mentioned in the official information for Стимол?

Official labeling includes a specific caution for patients following a strict hyposodium (salt-free) diet. This is due to the documented sodium content found in the formulation of the medicine.

Q: Why do some people say Стимол helps with recovery?

The general purpose is to support recovery from functional asthenia, with the active component assisting in enhanced clearance of ammonia and supporting cellular ATP synthesis (energy generation). This dual metabolic action provides the context for its use during periods of convalescence.

Q: Has Стимол been studied in research for chronic conditions?

The research base for the product is primarily focused on short-term symptom changes or episodic symptom patterns. Official research reviews note that there is limited information for long-term outcomes regarding chronic symptoms.

Q: Does Стимол have any known effect on blood pressure?

Official safety information notes that a possible transient hypotensive effect (low blood pressure) has been documented as a rare occurrence. Additionally, there is an official caution regarding a risk of additive hypotensive effects if co-administered with certain blood pressure-lowering medications.

Q: Why is Стимол sometimes recommended for intense effort?

Studies have extensively examined the active substance's relationship to muscular fatigue and the ability to perform intense exercise. The malate component is noted to support the tricarboxylic acid (TCA) cycle for adenosine triphosphate (ATP) synthesis, which is relevant to cellular energy pathways.

Q: How does Стимол affect kidney health according to official information?

The mechanism of action involves the active component acting as a precursor that targets the renal proximal tubules and assists the urea cycle to enhance nitrogenous waste clearance. However, official regulatory documents do not document specific restrictions or dosage adjustments related to renal impairment.

Q: What is the typical duration of use mentioned in studies for Стимол?

The majority of the research base involves studies focused on short-term symptom changes or observing responses over defined time intervals. These studies typically last two weeks or less, especially in the context of physical performance.

Q: Are there any warnings about using heavy machinery while taking Стимол?

Official safety warnings advise that caution is recommended when performing tasks that require mental alertness, such as driving or operating machinery. This is advised because of the potential for dizziness or other central nervous system effects documented in the safety profile.

Q: Why do some forums discuss using Стимол for detoxification?

The official mechanism of action explains that the citrulline component facilitates the urea cycle in the liver. This process promotes the conversion of ammonia into urea, thereby enhancing the clearance of nitrogenous waste products.

Q: Does the efficacy of Стимол depend on the underlying condition?

Research reviews indicate that for functional asthenia, findings were mixed regarding consistent reported changes across all observed populations. For physical endurance, official documents note that subgroup findings are uncertain, as reported results have varied based on the participant’s training level.

Q: Is Стимол generally well-tolerated?

The active component is generally described in official sources as having a favorable safety profile with very low toxicity in humans. Reported adverse effects are typically characterized as being mild and transient.

Q: What is the safety profile of Стимол for the liver?

The mechanism of action confirms the active substance is involved in the urea cycle in the liver. Official regulatory documents, however, do not document specific restrictions or dosage adjustments related to hepatic impairment (liver problems).

Q: Are there any known allergic reactions associated with Стимол?

Official safety information notes that rare cases of hypersensitivity or allergic reactions are possible. These reactions may include symptoms such as rash, itching, or swelling.

How should Стимол be stored and disposed of?

How to Store and Dispose of Стимол (Citrulline Malate)

Official regulatory documents define specific requirements for storing and disposing of Стимол to maintain the medicine's stability and ensure safety.


Storage Conditions

Requirement Description
Temperature Store below 25 C (77 F).
Protection Keep protected from light and moisture.
Child Safety Must be kept out of the sight and reach of children.
Packaging Store in the original container.

These conditions are essential to ensure the validity of the product's labeled expiration date. The medicine must not be used after the date printed on the package.

Disposal Instructions

Expired or unused Стимол must be disposed of according to local requirements for pharmaceutical products. It is mandated that the medicine must not be discarded via household waste or wastewater to prevent environmental contamination.

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

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