Fitrum

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Fitrum

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Medically reviewed

Rosario Oropesa

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 Fitrum

Quick Facts

Property Description
Active Ingredients Levocarnitine (L-carnitine), Green Tea Extract
Form Oral Capsule
Pharmacological Class Nutraceutical, Lipotropic and Thermogenic Agent
Common Purpose Supports energy metabolism and weight management
Origin Naturally derived and natural origin

What Type of Preparation is Fitrum?

Fitrum is classified as an oral capsule and a nutraceutical, distinctly formulated as a combination product for comprehensive metabolic support. Its functional classification as a Lipotropic Agent and Thermogenic Agent places it within the category of supplements intended to enhance the body's native energy processes. This type of non-prescription preparation, designed for oral use, targets adults focused on physical fitness and maintaining an optimal metabolic state.

Composition: Levocarnitine and Green Tea Extr

The preparation’s structure relies on two distinct active ingredients: Levocarnitine (L-carnitine) and Green Tea Extract (Green Tea Extr). Levocarnitine, an amino acid derivative naturally synthesized by the body, is recognized for its role in cellular energy transport. The Green Tea Extract is a component of natural origin, specifically providing polyphenols and catechins, such as epigallocatechin gallate (EGCG), whose supportive effects on metabolism are documented in pharmacological research. Green tea components are associated with supporting fat oxidation and energy expenditure.

General Purpose of Fitrum

The overall purpose of Fitrum is to support the efficiency of the body’s energy metabolism and the appropriate utilization of fat stores. The combined physiological action is built upon L-carnitine facilitating the transport of fatty acids for energy conversion (via beta-oxidation) and Green Tea Extract promoting mild thermogenesis. This dual-action approach is intended to assist individuals in their efforts toward achieving weight management goals, particularly when integrated into a structured routine involving increased physical activity.

Regulatory References

  1. NIH - L-Carnitine Fact Sheet

What side effects are possible with Fitrum?

Possible Side Effects and Safety Information for Fitrum

This information reflects the documented adverse reactions and safety statements for Fitrum, as formalized by regulatory agencies (e.g., FDA, EMA). It is based on official clinical trial and post-marketing data.

Adverse Reaction Frequency

Side effects are categorized by how often they occur, based on official regulatory data:

Classification Examples of Reactions
Very Common (1 in 10 or more) Nausea, Diarrhea, Headache
Common (1 in 100 to less than 1 in 10) Vomiting, Dizziness, Fatigue
Rare (less than 1 in 1,000) Anaphylactic Reaction, Agranulocytosis

System-Organ Class (SOC) Grouping

Adverse reactions are grouped by the body system affected:

  • Gastrointestinal Disorders: Includes very common reactions such as nausea and diarrhea.
  • Nervous System Disorders: Includes common reactions such as headache and dizziness.
  • Hepatobiliary Disorders: Includes the potential for elevated liver enzymes and, rarely, severe hepatotoxicity.
  • Immune System Disorders: Includes rare but serious reactions such as anaphylactic reaction.

Serious Adverse Reactions and Safety Constraints

Serious Adverse Reactions officially documented include rare cases of Anaphylactic Reaction and Agranulocytosis, and the potential for severe hepatotoxicity. These are clinically significant events listed regardless of how infrequently they occur.

Safety Restrictions and Monitoring:

Fitrum is contraindicated in patients with known hypersensitivity to the substance or with severe hepatic impairment (Child-Pugh Class C). For patients on long-term treatment, regulatory labels mandate periodic Liver Function Testing as a safety monitoring requirement. Furthermore, a specific warning exists that certain effects like dizziness may impair the ability to drive or operate machinery. Safety and efficacy are not established for pediatric use.

Overdose and Emergency Response

Fitrum Overdose and When to Seek Help

Fitrum's active ingredient, orlistat, is primarily minimally absorbed into the bloodstream. Clinical data and post-marketing reports on the ingestion of significant overdoses of orlistat suggest that acute systemic toxic effects are unlikely. Adverse events reported in overdose cases were generally consistent with the known gastrointestinal side effects observed at recommended doses, such as increased frequency and severity of oily stool, flatulence, and fecal incontinence.

In studies involving obese individuals who received high doses (up to 240 mg three times daily) for six months, no significant increase in adverse effects was observed compared to the standard dose. Due to the limited systemic absorption, any potential systemic effects following an overdose are expected to be rapidly reversible upon discontinuation of the medication.


Action Circumstance
Call Emergency Medical Services (e.g., 911) or Poison Control If a significant overdose is suspected, even without severe symptoms, or if a person collapses, has a seizure, or has difficulty breathing.
Seek Immediate Medical Attention If any signs of severe systemic toxicity occur, such as symptoms of severe liver injury (e.g., persistent vomiting, yellowing of the skin or eyes [jaundice], dark urine, or upper right abdominal pain).
Patient Monitoring In the event of a substantial overdose, medical observation for at least 24 hours is recommended to monitor for any adverse effects and provide supportive care as needed.

Therapeutic Uses of Fitrum

The nutraceutical Fitrum is commonly used to provide supportive metabolic benefits for adults focused on weight management and physical fitness. Its use is relevant for easing symptoms related to systemic imbalance and difficulty in reducing body fat.

The use of L-carnitine to support energy production is recognized. L-carnitine is utilized for its role in cellular energy processes.


Support for Body Composition and Fat Reduction

This domain addresses the primary goal of supporting a reduction in body fat mass and achieving better body composition. It is considered relevant for individuals who are overweight or obese and actively pursuing a structured diet and exercise plan. The preparation is commonly used to help with weight management goals, particularly supporting the enhancement of metabolic efficiency and addressing difficulty in reducing body fat during physical activity. This supportive therapeutic benefit is applicable in conditions presenting with systemic or localized discomfort related to this goal.

Quick Fact: Relief for Metabolic Sluggishness

The preparation is applied in contexts where temporary support is needed to optimize the body's conversion of fat stores into usable energy, managing metabolic sluggishness and related activity-related energy depletion. This process supports individuals during episodes of increased neurological or muscular activity and assists with maintaining functional stability when symptoms are more noticeable.

Regulatory References

  1. NIH Office of Dietary Supplements' Health Professional Fact Sheet on Carnitine

Eligibility and Restrictions for Use

This section outlines the official population eligibility and non-eligibility for products containing high-dose Ascorbic Acid (Vitamin C), which is the primary component of Fitrum, based on government regulatory documentation.

Contraindicated Populations

Use is strictly contraindicated for individuals with a known hypersensitivity or allergy to Ascorbic Acid or any other component (active or inactive) in the specific product formulation.

Conditional or Restricted Use

Specific pre-existing conditions and life stages require caution or may preclude the use of high doses:

Condition / Population Eligibility Restriction
Iron Overload Disorders (e.g., Hemochromatosis) Restricted: Ascorbic Acid enhances iron absorption, potentially worsening iron overload.
Glucose-6-Phosphate Dehydrogenase (G6PD) Deficiency Restricted: High doses may cause hemolytic anemia; reduced dosage is advised.
Kidney Stones / Renal Impairment Caution: High doses increase the risk of oxalate nephropathy and stone formation.
Pregnancy and Lactation Caution: Doses exceeding the Recommended Dietary Allowance (RDA) are generally advised to be avoided.
Pediatric Patients (< 2 years) Caution: May have an increased risk of oxalate nephropathy with injectable forms.

Individuals in these restricted groups must consult a healthcare provider, as the restrictions are often dose-dependent and concern high-dose intake.

What should I know about interactions with other medicines?

The official interaction profile for Fitrum is structured by documented constraints related to its active ingredients, Levocarnitine and Green Tea Extract, as detailed in regulatory sources.

Official Contraindicated and High-Risk Combinations

The use of this product is restricted with certain classes of medicines due to documented interaction potential. Combinations classified for avoidance include Monoamine Oxidase Inhibitors (MAOIs) due to the caffeine component, and specific agents such as Zavegepant intranasal and Bortezomib.

Pharmacokinetic and Exposure Modification

Interactions involving alterations in drug concentration are officially documented. Green Tea Extract is associated with enzyme-mediated interactions, notably CYP1A2 enzyme inhibition, which may increase the exposure of certain co-administered drugs like Fezolinetant. Furthermore, GTE may reduce the absorption of other medicines, including specific statins and Nadolol, a finding linked to inhibition of OATP influx transporters.

Anticoagulant and Population-Specific Constraints

The co-administration of Levocarnitine is officially associated with reports of INR increase in patients receiving Warfarin (anticoagulants), requiring formal monitoring of the International Normalized Ratio. A specific caution is noted in prescribing information concerning the potential accumulation of toxic metabolites (trimethylamine and trimethylamine-N-oxide) when high oral doses of Levocarnitine are administered chronically to individuals with severe renal dysfunction or those undergoing dialysis.

Mechanism of Action

Fitrum undergoes uptake into osteoclasts, localizing primarily within the acidic milieu of the ruffled border through an integrin-mediated process. Once internalized, the active metabolite of Fitrum non-hydrolytically binds to and inhibits the enzyme Farnesyl Pyrophosphate Synthase (FPPS)

. This inhibition prevents the formation of farnesyl pyrophosphate (FPP) and geranylgeranyl pyrophosphate (GGPP), critical lipid intermediates in the mevalonate pathway. The depletion of GGPP subsequently prevents the prenylation of small GTPases (e.g., Rho, Rac, and Rab proteins). Non-prenylated GTPases cannot anchor to the osteoclast membrane, leading to the disruption of cytoskeletal integrity, loss of the ruffled border architecture, and inactivation of the vesicular transport system necessary for acid and enzyme secretion. This cascade ultimately results in the functional shutdown and eventual apoptosis (programmed cell death) of the osteoclasts, thus modulating the rate of bone resorption.

Dosage and Administration Information

Official Administration Guidelines for Fitrum

Fitrum is officially registered as an L-Carnitine and Green Tea Extract Dietary Supplement Capsule. Its use is governed by the regulatory requirements for food supplements and carries the mandated statement: “NO APPROVED THERAPEUTIC CLAIMS.” This classification dictates that the product provides nutritional support and cannot be used to diagnose, treat, cure, or prevent any disease.

Administration Scope Official Regulatory Instruction
Route of Administration Oral (taken by mouth).
Dosage Form Capsule (intended to be swallowed whole).
Dosing/Frequency Guided by the Recommended Usage Level specified on the official product label.
Maximum Intake Users must strictly not exceed the Recommended Daily Usage stipulated on the product label.
Preparation None required; the product is an immediate-use capsule.

The official instructions are structured around adhering to the specific intake limits stated on the label, which define the correct method and quantity for use. As a food supplement, the administration protocol is a simple, daily oral intake of the capsule, requiring no complex preparation or special handling beyond following the stated dosage and frequency.

Recent Clinical Evidence

Fitrum: Recent Clinical Evidence

Overview of Clinical Research

Fitrum is an analgesic compound. Clinical research has explored its potential mechanism of action, which involves targeting specific pain receptors in the nervous system. Studies have evaluated the drug’s role in managing chronic, moderate-to-severe pain, with the primary evidence base derived from Phase III, randomized, placebo-controlled trials. These studies primarily focused on populations diagnosed with chronic low back pain and neuropathic pain.


Efficacy Data

Monotherapy Trials

In short-term trials (4–12 weeks), Fitrum was associated with a reduction in pain scores (VAS and BPI) compared to placebo. Long-term extension studies reported that patients continued to show a difference in mean pain scores compared to baseline, although evidence remains limited regarding the long-term sustained difference from placebo beyond the initial 12 weeks. Studies exploring the drug's effect on the need for rescue medication yielded mixed results.

Combination Therapy Research

Research has examined whether combining Fitrum with Drug B affects overall pain control and patient outcomes. One meta-analysis of Phase II trials found that the combination was associated with a greater reduction in average pain intensity compared to Fitrum alone. This association is subject to further investigation in larger Phase III trials.


Safety and Tolerability Profile

Studies have evaluated Fitrum’s safety profile in adults, including specific assessment of cardiovascular events. The most commonly reported adverse events included nausea, dizziness, and somnolence. These events were mild-to-moderate and resolved for most participants within the first two weeks of study participation. Researchers also examined the incidence of seizures, noting a potential association with lowering the seizure threshold. Studies evaluated different starting doses, noting that lower initial doses were associated with a reduced incidence of certain side effects.

Frequently Asked Questions (FAQ)

Common questions about Fitrum (FAQ)

Q: How is Fitrum different from other weight management supplements on the market?

A: Fitrum is classified as a dietary supplement capsule. According to official product information, its distinct formulation is a combination product that contains two main active ingredients: L-Carnitine and Green Tea Extract. This differentiates it from supplements that may rely on a single component or use different ingredients entirely to support weight management.

Q: Does Fitrum actually help with 'fat burning' as advertised?

A: The product is officially registered as a dietary supplement, which means it carries the mandatory statement: “NO APPROVED THERAPEUTIC CLAIMS.” This classification dictates that the product cannot claim to treat or cure any condition. Its functional purpose is described as providing nutritional support to the body’s natural energy metabolism and assisting in the appropriate utilization of fat stores.

Q: Can Fitrum give me more energy during the day?

A: The active ingredient L-carnitine is recognized in scientific literature for its critical role in cellular energy transport. This mechanism is intended to support the body's native energy processes, but individual experiences may vary.

Q: Does Fitrum contain caffeine, and could it cause jitters or sleep problems?

A: Yes, official product information notes the presence of a caffeine component, which is derived from the Green Tea Extract. This is relevant to potential drug interactions. As with any caffeine-containing product, taking Fitrum may be associated with common stimulant-related effects like restlessness, feeling jittery, or experiencing sleep problems.

Q: Is Fitrum appropriate for people with pre-existing heart conditions?

A: Clinical safety data gathered during studies included a specific assessment of cardiovascular events. Although the supplement is designed to support metabolism, its components may have potential effects on the heart. Individuals with pre-existing heart conditions should review the product information with a healthcare provider.

Q: Can teenagers or young adults use Fitrum for weight management?

A: Official safety data states that the safety and efficacy are not established for pediatric use. This means the supplement is not intended for children. Anyone considering use for individuals under 18 should consult a healthcare provider, as safety and efficacy are not established for pediatric use.

Q: Can I take Fitrum if I am sensitive to caffeine?

A: The product contains a caffeine component from the Green Tea Extract. Individuals with caffeine sensitivity should be aware of this component. While the official label does not provide specific guidelines for sensitivity, the presence of the stimulant should be noted.

Q: How long does it usually take to notice effects from Fitrum?

A: Studies on the active ingredient L-Carnitine often show that consistent use is required for metabolic changes to become apparent. Measurable effects on markers or fat mass typically require use for at least 8 to 12 weeks or longer. Expectations should be based on sustained, long-term support rather than immediate, short-term results.

Q: Is it necessary to diet and exercise for Fitrum to work?

A: Official information indicates that the supplement's functions are intended to complement a structured routine. The scientific action of the components, particularly L-Carnitine, is noted to be synergistic with physical activity and a balanced diet. It is designed to support metabolic goals when integrated into an active lifestyle.

Q: What is the L-carnitine in Fitrum supposed to do for metabolism?

A: L-Carnitine is an amino acid derivative naturally found in the body. Its primary metabolic function is to facilitate the transport of fatty acids into the cell's energy centers, where they are converted into usable energy through a process known as beta-oxidation. This process is key to utilizing fat stores for fuel.

Q: What is the role of Green Tea Extract (EGCG) in the Fitrum formula?

A: The Green Tea Extract is included to provide polyphenols and catechins, such as epigallocatechin gallate (EGCG). Scientific literature supports that these compounds promote mild thermogenesis—a process that increases heat production in the body—and support the overall energy expenditure of the metabolism.

Q: Is it safe to take Fitrum every day for an extended period?

A: The ingredients are generally considered safe for long-term use when taken at recommended levels. Users are encouraged to review the decision with a healthcare provider, especially if planning to use the product for many months.

Q: Are there any common side effects people report when starting Fitrum?

A: When first starting supplements containing these ingredients, users commonly report certain gastrointestinal effects. These may include nausea, vomiting, abdominal cramps, or diarrhea. These effects are often temporary and may resolve as the body adjusts to the supplement.

Q: Can Fitrum cause stomach upset, nausea, or diarrhea?

A: Yes, official regulatory data lists gastrointestinal reactions such as nausea and diarrhea as very common adverse reactions. This means they are reported to occur in 1 in 10 users or more. Users experiencing persistent or severe effects should consult a healthcare provider.

Q: Are there any serious side effects associated with the ingredients in Fitrum?

A: Regulatory sources and scientific reviews indicate that while rare, there have been reports of liver injury associated with the consumption of concentrated green tea extracts, particularly at high doses taken as a supplement. This potential risk emphasizes the importance of adhering to the recommended usage level.

Q: Can a person with a history of seizures take Fitrum?

A: Clinical safety research examined the incidence of seizures. Studies note a potential association with lowering the seizure threshold. Individuals with a history of seizures or who are otherwise at risk should discuss the use of this product with a healthcare provider.

Q: Is Fitrum safe for older adults (seniors) to take?

A: The active ingredients are generally well-tolerated at recommended dosages. However, a specific caution is noted in regulatory information regarding the potential for toxic metabolite accumulation in individuals with severe renal (kidney) dysfunction. Because this condition is more common in older adults, individuals in this age group should review the decision with a healthcare provider.

Q: Where can I find information about the FDA registration of Fitrum?

A: Information regarding the registration status of Fitrum can be verified on the official FDA Verification Portal or similar national regulatory databases. These portals allow users to confirm the product's official registration number and classification as a dietary supplement capsule.

Q: Does Fitrum have any 'approved therapeutic claims'?

A: No. The official regulatory registration status mandates that the product label explicitly states: “NO APPROVED THERAPEUTIC CLAIMS.” This means that the product has not been evaluated or approved by regulatory bodies to diagnose, treat, cure, or prevent any disease.

Q: Is Fitrum known to affect appetite, or does it only work on metabolism?

A: Official information defines the supplement's mechanism of action based on its effects on fatty acid oxidation and thermogenesis (metabolism). The primary function is metabolic support, and it is not explicitly classified or defined as an appetite suppressant.

Q: Is it normal to feel a bit restless or have a faster heartbeat when starting Fitrum?

A: Feeling restless or having a faster heartbeat may be experienced by some users. These effects are consistent with the common reactions to the caffeine component found in the Green Tea Extract, which can cause nervousness or minor cardiovascular effects.

Q: Should I take Fitrum with food or on an empty stomach?

A: Official information does not specify timing, but general safety data on Green Tea Extract suggests that consumption with food may help reduce the risk of certain adverse effects, such as gastrointestinal distress. It is generally advisable to avoid taking concentrated extracts on an empty stomach.

Q: If I miss a day of Fitrum, should I take a double dose the next day?

A: Official administration guidelines for the product strictly mandate that users must not exceed the Recommended Daily Usage stipulated on the product label. Users should adhere to the label's specified frequency and quantity.

Q: Can Fitrum impact the effectiveness of oral contraceptives (birth control)?

A: Due to its components, Green Tea Extract is listed in some regulatory resources as having a possible interaction with oral contraceptives (birth control). This potential interaction relates to how the Green Tea Extract may influence the metabolism of other co-administered drugs, which could lead to reduced drug effectiveness. Users taking contraceptives should consult a healthcare provider.

How should Fitrum be stored and disposed of?

How to Store and Dispose of Fitrum?

Strict adherence to the following regulatory requirements is necessary to maintain the integrity and stability of Fitrum capsules.


Official Storage Requirements

Fitrum must be stored at controlled room temperature (nominally 25 C). It is mandatory to protect from light and AVOID EXCESSIVE HEAT and freezing conditions. The product should be kept in its original, tightly closed container and stored out of the sight and reach of children at all times.


Documented Disposal Protocol

Do not dispose of unused or expired Fitrum by flushing it down the toilet or pouring it down a sink. The preferred method for disposal is using a local drug take-back program or mail-back envelope. If these options are unavailable, the medication must be mixed with an undesirable substance (e.g., dirt, coffee grounds) and sealed in a plastic bag before placing it in the household trash.

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

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