Ergogen

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 Ergogen

What is Ergogen? Quick Facts

Property Description
Active ingredient Levocarnitine (L-Carnitine)
Form Tablets, Oral Solution, Injectable Solution
Pharmacological class Metabolic Agent, Amino Acid Derivative
General purpose Supports energy metabolism and fatty acid transport
Origin Endogenous molecule (naturally synthesized)

What Type of Medicine is Ergogen?

Ergogen is a pharmaceutical preparation whose primary active component is Levocarnitine (L-Carnitine), a naturally occurring substance classified as an Amino Acid Derivative and a Metabolic Agent. This compound is formally defined by its chemical structure as a quaternary ammonium compound. The preparation is fundamentally a single-entity drug, prescribed for clinical use to manage metabolic deficiencies, a key differentiator from generalized over-the-counter (OTC) supplements.

Ergogen belongs to the pharmacological class of Metabolic Agents, intended to support energy utilization within the body. The active molecule, Levocarnitine, represents the biologically functional L-form of carnitine, which is vital for cellular health. As a single-component product, the prescription medication is manufactured in several forms, including tablets, an oral solution, and an injectable solution, ensuring comprehensive options for the route of administration.


Levocarnitine: Composition, Origin, and Purpose

The active ingredient, Levocarnitine (C7H15NO3), is an endogenous molecule naturally synthesized in the body from the essential amino acids lysine and methionine. Levocarnitine's general purpose is to support and optimize energy metabolism by acting as an essential carrier molecule (or shuttle). It is required to transport long-chain fatty acids across the inner membrane of the cell's mitochondria, ensuring these fats are effectively utilized for energy production (ATP generation). This mechanism shows that the compound is necessary for supplying fuel to high-energy tissues like muscle and the heart, supporting the function of these energy-intensive tissues.

Regulatory References

  1. Carnitine - NIH Office of Dietary Supplements

What side effects are possible with Ergogen?

Possible Side Effects and Safety Information

The official safety documentation for Levocarnitine (Ergogen) classifies documented adverse reactions by frequency and the body system affected, strictly following regulatory standards.

Frequency and System-Organ Classifications

Adverse events reported during use are primarily categorized into Gastrointestinal Disorders, Nervous System Disorders, and Immune System Disorders.

  • Common Reactions: Mild gastrointestinal complaints, including nausea, vomiting, abdominal cramps, and diarrhea, are noted in the safety labeling, particularly when reported during long-term oral administration. A specific, drug-related body odor (often described as “fishy”) is also a known adverse reaction.
  • Very Rare Reactions: In some regulatory contexts, reactions such as the gastrointestinal disturbances, body odor, and an increase in the International Normalized Ratio (INR) have been classified as Very Rare events.

Serious and Population-Specific Safety Notes

Safety data lists specific reactions of clinical importance:

  • Serious Adverse Reactions documented include severe hypersensitivity events, such as anaphylaxis, laryngeal edema, and bronchospasm, which have been observed primarily following intravenous administration in patients with end-stage renal disease (ESRD).
  • Neurological Safety: The official label notes the occurrence of seizures and a documented increase in the frequency and/or severity of seizures, including in patients with pre-existing seizure activity.

Population-Specific Considerations:

  • Renal Impairment: Chronic oral use in patients with severe renal impairment (including ESRD) may lead to the accumulation of metabolites (TMA and TMAO), which is associated with the body odor.
  • Diabetic Patients: The administration of levocarnitine may result in hypoglycemia when used concurrently with insulin or other oral hypoglycemic treatments.
  • Anticoagulant Use: There is a documented risk of an increased INR when Ergogen is administered alongside warfarin or other coumarinic anticoagulant drugs. Monitoring of tolerance is noted by regulatory documents for the first week of treatment and after any dosage adjustments.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory information for Levocarnitine (Ergogen) indicates that there have been no reports of toxicity from acute overdosage. However, specific adverse manifestations and serious reactions are documented, which define when urgent medical attention is required.

Overdosage is primarily associated with gastrointestinal effects with large oral doses, including diarrhea and transient nausea and vomiting. A distinct, drug-related body odor is also documented and may diminish upon dose reduction.

Serious hypersensitivity reactions have been reported and necessitate immediate action. These include potentially life-threatening systemic effects such as anaphylaxis, laryngeal edema, and bronchospasm, particularly following intravenous administration in certain patients. Immediate medical attention must be sought if symptoms suggestive of a hypersensitivity reaction (e.g., rash, swelling of the face) are experienced; treatment must be discontinued and appropriate medical care initiated for severe reactions.

Furthermore, the official label notes two population-specific risks: accumulation of potentially toxic metabolites (trimethylamine) with chronic high-dose oral use in patients with severely compromised renal function or those on dialysis, and an increase in the frequency and/or severity of seizures in patients with pre-existing seizure activity. Levocarnitine is documented as being easily removable from plasma by dialysis.

Therapeutic Uses of Ergogen

What Ergogen Treats: Main Uses and Benefits

Ergogen (Levocarnitine) is a prescription metabolic agent generally used to help manage conditions and symptoms that create noticeable physiological strain stemming from a documented lack of carnitine. The therapeutic use of prescription levocarnitine is relevant for the management of carnitine deficiency. The core benefit supports energy metabolism and assists with managing the systemic effects associated with this deficiency.


This medication is applied in addressing symptom clusters such as systemic fatigue, lethargy, muscle weakness (myopathy), and metabolic disturbances like hypoglycemia that characterize primary and secondary carnitine deficiencies, including those linked to inborn errors of metabolism and end-stage renal disease (ESRD) on hemodialysis. This supportive care may assist with maintaining functional stability and supports patients during difficult episodes by easing distress related to chronic exhaustion.

A specific use is considered relevant for patients managing or assisting with the carnitine depletion caused by certain required therapies, such as the use of valproic acid. This use may assist with managing the risk of metabolic complications, and contributes to the easing of discomfort during symptomatic periods while the patient receives their primary prescribed medication.

Quick Fact: Support for Fatigue and Weakness
Symptom Category: Symptoms related to systemic imbalance and noticeable physiological strain.
Common Clinical Context: Conditions marked by impaired fatty acid utilization or drug-induced carnitine loss.
Benefit Focus: Assists with maintaining functional stability and eases distress during symptomatic periods.

Regulatory References

  1. NIH DailyMed - LEVOCARNITINE tablet

Eligibility and Restrictions for Use

Who Can and Cannot Use Ergogen (Levocarnitine)?

Official regulatory information defines the eligible population for Ergogen based on age, physiological status, and underlying comorbidities.


Eligibility Scope

Category Official Regulatory Statement
Established Use Indicated for adults and the entire pediatric range (infants, children, adolescents) for documented carnitine deficiencies.
Absolute Restriction The oral solution is not recommended for patients with hereditary fructose intolerance due to an excipient (Sorbitol).
Conditional Use Chronic high-dose oral use is not recommended for patients with End-Stage Renal Disease (ESRD) on dialysis due to potential metabolite accumulation.
Caution Required Use requires special caution in individuals with pre-existing seizure activity due to reports of increased seizure frequency or severity.

Special Population Status

Category Regulatory Wording
Pregnancy Assigned Pregnancy Category B. Use is permitted only if clearly needed.
Lactation Requires weighing the potential risks to the nursing child against the benefits to the mother.

The official labeling specifies that patients with carnitine deficiency of any age are eligible, but mandates restrictions for the oral form in those with severe renal impairment and requires monitoring for those with seizure disorders or diabetes, defining the boundaries of its safe and permitted use.

What should I know about interactions with other medicines?

Ergogen Interactions with other medicines and products

The official interaction profile for Ergogen (Levocarnitine) is documented across several domains, detailing required precautions for drug combinations, administration, and specific patient populations.

Drug-Drug Interactions

Co-administration with Coumarinic Drugs (such as Warfarin) has been associated with regulatory reports of an increased International Normalised Ratio (INR). This pharmacodynamic effect requires monitoring of coagulation parameters during concurrent use. A similar potential for an additive effect is noted with hypoglycaemic agents and insulin, where co-administration may result in hypoglycaemia.

Furthermore, certain anticonvulsant therapies (including Valproic Acid) are officially documented as being associated with the depletion of the body’s native levocarnitine levels, which is the metabolic condition that Ergogen is used to address.

Population and Administration Constraints

For patients with severe renal impairment or those on End-Stage Renal Disease (ESRD) dialysis, chronic administration of high oral doses may result in the accumulation of potentially toxic metabolites, specifically trimethylamine and trimethylamine-N-oxide. This is due to impaired renal clearance.

Regarding the oral formulation, the excipient sorbitol may affect the bioavailability of other concurrently administered oral medicinal products. To manage gastrointestinal effects, the oral solution must be consumed slowly and doses must be spaced evenly throughout the day, as stated in the regulatory documentation.

Mechanism of Action

Ergogen functions primarily as a mixed agonist on specific biological targets within smooth muscle tissue, particularly the uterus and vasculature. Systemic delivery leads to a selective concentration within the uterine myometrium. At the cellular level, the molecule acts as a partial agonist at alpha-adrenergic receptors and a direct agonist at serotonin receptors (5- HT2 A and others). This receptor engagement initiates a Gq-coupled signaling cascade, resulting in the activation of phospholipase C and subsequent increase in intracellular inositol trisphosphate ( IP3) and diacylglycerol (DAG) concentrations. The rise in IP3 promotes the release of stored Ca^2+ from the sarcoplasmic reticulum, increasing cytoplasmic calcium levels. Simultaneously, the molecule modulates vascular smooth muscle tone through the inhibition of endothelial-derived relaxation factors. The combined intracellular events—elevated Ca^2+ concentration and altered signaling—drive sustained myometrial cell contraction, leading to systemic physiological modulation characterized by uterine smooth muscle spasm and elevated basal tone.

Dosage and Administration Information

How to Use Ergogen

Administration of Ergogen (creatine monohydrate) is based strictly on an oral, two-phase daily dosing schedule as outlined in authoritative regulatory and medical monographs. These official instructions define the required steps for administering the drug.


Official Administration Schedule

Phase Duration Approximate Daily Oral Dose
Loading Phase ge 3 days sim 0.3 grams/ kg/ day (e.g., 20 grams/ day)
Maintenance Phase Ongoing 3 grams/ day to 5 grams/ day

The instructions specify that the administration method is oral, with the procedure divided into an initial Loading Phase followed by a continuous Maintenance Phase. This structure dictates the precise amount and duration for each period of use.


Procedural Rules

  1. Formulation: The labeled administration procedure is based on the use of Creatine Monohydrate (CM).
  2. Timing: The instructions define a special procedural condition: the drug must be co-ingested with a carbohydrate or a carbohydrate and protein supplement. This step is mandated to increase retention in muscle tissue.
  3. Frequency: The drug is taken daily during both the initial loading and subsequent maintenance periods.

This regulated protocol provides the exact sequence of steps a patient must follow, establishing the standardized approach to drug use according to governmental guidelines.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Ergogen (Levocarnitine)


Evidence for Use in Primary Systemic Carnitine Deficiency

Clinical research for Primary Systemic Carnitine Deficiency has primarily relied on Randomized Controlled Trials (RCTs) and long-term observational cohort studies conducted across both pediatric and adult populations. These studies were used in research exploring how symptoms change over time and focused on outcomes related to systemic or functional imbalance.

The studies report that outcomes related to the normalization or increase in carnitine levels were monitored in the body of patients receiving the preparation. Long-term observational data have described patterns observed in the studies related to metabolic stability and the incidence of acute, disruptive episodes in observed populations over time. Research is ongoing to better define the specific timing and duration of use evaluated for long-term outcomes.


Evidence for Secondary Carnitine Deficiency and Metabolic Support

Research has explored the use of Levocarnitine to examine carnitine depletion that arises secondary to other health issues.

Research for Deficiency Related to Inborn Errors of Metabolism

Evidence was evaluated in controlled studies focusing on patients with inherited metabolic disorders leading to carnitine depletion. Researchers primarily monitored biochemical endpoints, such as the acylcarnitine profile. Findings describe patterns observed in the studies related to carnitine profiles and patterns of reduced circulating levels of toxic metabolites. However, the specific changes reported in clinical status were highly heterogeneous across the many different types of underlying metabolic disorders, and research highlights that certainty remains low for certain subgroups.

Research for Carnitine Loss in Hemodialysis

For End-Stage Renal Disease (ESRD) patients undergoing hemodialysis, the evidence was evaluated in Randomized Controlled Trials and subsequent Systematic Reviews. These studies monitored outcomes linked to physiological strain, including serum carnitine levels, and outcomes related to physical discomfort such as muscle cramps and fatigue. Data show patterns related to consistent increases in carnitine levels in the circulation of patients on hemodialysis. However, the reported findings on subjective clinical symptoms like fatigue and muscle cramping were often mixed and inconsistent across different studies.


Research Gaps and Areas of Uncertainty

Research describes that evidence quality varies across studies depending on the specific indication, with some areas relying heavily on observational data due to the rarity of the conditions. The results apply only to the populations studied, and certainty remains low in areas where studies explored short-term symptom changes. There is limited information for long-term outcomes for many of the secondary indications, and subgroup findings are uncertain where small patient numbers were involved.

Key Studies & References

  1. LEVOCARNITINE tablet - NIH DailyMed

Frequently Asked Questions (FAQ)

Common questions about Ergogen (FAQ)

Q: What is Ergogen, and how does it work?

A: Ergogen is the brand name for a medication containing the active ingredient ergonovine maleate, a type of medicine known as an ergot alkaloid. It primarily works by causing the smooth muscles of the uterus (womb) to contract powerfully and rhythmically. This action is essential for:

  • Controlling bleeding after childbirth (postpartum hemorrhage).
  • Helping the uterus return to its normal size (involution).

It is sometimes used to diagnose a specific type of chest pain called Prinzmetal's angina or variant angina in a controlled hospital setting because it can provoke coronary artery spasm.

Q: What is Ergogen used for?

A: Ergogen is primarily used in obstetrics to manage and prevent heavy bleeding that can occur after a baby is delivered (postpartum hemorrhage). By making the uterus contract, it helps compress the blood vessels at the site where the placenta was attached, reducing blood loss. In specific clinical procedures, it may also be used as a test to check for coronary artery spasm.

Q: How is Ergogen given?

A: Ergogen is typically given by a healthcare professional in a hospital or clinical setting. It can be administered in several ways:

  1. Intravenously (IV): Injected directly into a vein, which provides the fastest effect.
  2. Intramuscularly (IM): Injected into a muscle.
  3. Orally: Taken by mouth as a tablet, usually for continued management after initial injection.

The specific route and dose depend on the medical condition being treated, the patient's response, and the urgency of the situation.

Q: What are the common side effects of Ergogen?

A: As with many medications, Ergogen can cause side effects. Common side effects often include:

  • Temporary increased blood pressure (hypertension).
  • Nausea and vomiting.
  • Headache.
  • Abdominal pain or uterine cramping.

Less common but more serious side effects can involve severe hypertension, chest pain, and allergic reactions. A healthcare professional monitors patients closely while receiving Ergogen.

Q: Can Ergogen be used during pregnancy?

A: No, Ergogen is generally not used during pregnancy before the delivery of the baby. Its powerful effect of causing the uterus to contract could lead to serious complications for the fetus and the mother. Its primary use in obstetrics is after the delivery of the baby (postpartum) to control bleeding. In rare diagnostic cases for variant angina, it is only used with extreme caution and in a highly controlled environment, as the risks associated with the drug must be carefully weighed against the need for diagnosis.

Q: Who should not take Ergogen?

A: Ergogen is generally contraindicated (should not be used) in patients with certain conditions, including:

  • High blood pressure that is severe or uncontrolled (severe hypertension).
  • Toxemia of pregnancy (preeclampsia or eclampsia).
  • Allergy or hypersensitivity to ergot alkaloids.
  • Vascular disease (such as coronary artery disease or peripheral vascular disease).
  • Use for the induction of labor.

How should Ergogen be stored and disposed of?

How to Store and Dispose of Ergogen (Levocarnitine)

Official regulatory labeling dictates specific conditions to maintain the quality and safety of this medication.

Storage Requirements

Ergogen must be stored at controlled room temperature, typically 20 C to 25 C, and protected from light. The oral solution must not be frozen. Keep the medication in its original container, ensure it is tightly closed, and store it strictly out of the sight and reach of children.

Disposal Instructions

Unused or expired medication must be disposed of according to local regulations. Patients should utilize a drug take-back program if available. Disposal by flushing down the toilet or pouring into a drain (wastewater) is generally prohibited unless explicitly directed by the product's official labeling.

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

Available in countries:

Equivalent of Ergogen found in:

A-Z Index: