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isicom retard

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isicom retard

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Medically reviewed

Marina Burgos

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.

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Overview of isicom retard

Property Description
Active Ingredients Levodopa, Carbidopa
Form Prolonged-release tablet (Retardtablette)
Pharmacological Class Dopaminergic antiparkinsonism agent
Common Use Symptomatic management of Parkinson's disease
Origin Synthetic

What Type of Medicine is isicom retard?

isicom retard is a prescription-only fixed-dose combination product classified as a dopaminergic antiparkinsonism agent. This medicine is designed for the symptomatic management of movement disorders, chiefly Parkinson's disease and associated parkinsonism. Its overall objective is to function as a dopamine replacement strategy for the core motor features of the condition. This means the medicine helps to improve the control of body movements affected by low levels of the chemical messenger dopamine in the brain.

Composition and Form: Levodopa, Carbidopa, and the Retard Tablet

The formulation is an oral dosage form containing two synthetic active ingredients: Levodopa and Carbidopa. The drug is specifically presented as a prolonged-release tablet (Retardtablette), an extended-release system that provides a sustained delivery profile over time. The retard formulation is a key differentiating feature of this specific product. This controlled-release form is designed to manage motor fluctuations, particularly in adult patients experiencing a less stable response to immediate-release formulations.

Why is isicom retard a Combination Product?

The combination of Levodopa and Carbidopa is vital because Levodopa needs protection to be effective in the central nervous system. Without the inhibitor, most of the Levodopa would be metabolized in the body before it could cross the blood-brain barrier. Carbidopa prevents this peripheral conversion, significantly enhancing the bioavailability of Levodopa to the brain. This combination is necessary for enhancing Levodopa's passage into the brain, thereby increasing its therapeutic effect. This strategic action optimizes its ability to be converted into dopamine for symptomatic relief.

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What side effects are possible with isicom retard?

Possible side effects and safety information

The safety characteristics of levodopa/carbidopa prolonged-release are classified by frequency and grouped into affected physiological systems, as documented in official regulatory sources. The most frequently documented adverse reaction is Dyskinesia (involuntary movements), which is formally classified as Very Common.

Adverse effects listed as Common include reactions grouped under Psychiatric Disorders (e.g., hallucinations, confusion, insomnia, abnormal dreams) and Gastrointestinal Disorders (e.g., nausea, vomiting, diarrhea, dry mouth). Effects on the Nervous System like somnolence and dizziness, as well as Orthostatic Hypotension (a Vascular Disorder), are also classified as common in regulatory labeling.

Official documents highlight several clinically significant safety concerns. The development of Impulse Control and Compulsive Behaviors (such as pathological gambling or increased sexual urges) is noted. A risk of Sudden Onset of Sleep has been reported, sometimes occurring without warning. A severe, potentially fatal syndrome resembling Neuroleptic Malignant Syndrome can occur following rapid dose reduction or withdrawal of treatment.

Regulatory safety constraints advise caution in certain populations or conditions. The medicine is contraindicated in individuals with a history of melanoma or undiagnosed skin lesions. Use is generally not recommended in the pediatric population, and older adults may exhibit increased sensitivity to psychiatric effects. Safety statements also note that Motor Fluctuations and Dyskinesias are associated with the long-term use of dopaminergic therapy.

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Overdose and Emergency Response

The official regulatory documentation for Levodopa/Carbidopa prolonged-release describes specific clinical presentations associated with excess exposure or overdose. Manifestations typically reflect exaggerated dopaminergic effects on the central nervous system, including severe dyskinesias (involuntary movements) and blepharospasm, which is documented as a useful early indicator of excess dosage. Neuropsychiatric signs such as agitation, confusion, and hallucinations may also be present as part of the acute toxic profile.

Overdose carries the risk of severe, life-threatening outcomes, notably a symptom complex resembling Neuroleptic Malignant Syndrome (NMS), characterized by profound muscular rigidity and hyperthermia. Furthermore, cardiovascular instability, including tachycardia and significant blood pressure fluctuations, is a documented concern requiring clinical management.

Immediate medical attention must be sought for any suspected overdose, and emergency services should be contacted promptly, as immediate clinical care is required. Treatment is strictly symptomatic and supportive, since no specific chemical antidote is known for this medicine. Due to the medicine’s prolonged-release formulation, regulatory requirements mandate continuous observation and electrographic monitoring (ECG) for an extended period, often necessary to detect delayed toxicity and safely manage the patient's cardiovascular status.

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Therapeutic Uses of isicom retard

Quick Facts

  • Therapeutic Domain: Supportive management for Parkinson's disease.
  • Primary Function: Addresses motor signs and symptoms associated with the condition.
  • Usage Context: Often considered for individuals experiencing motor fluctuations with immediate-release formulations.

What isicom retard Treats: Main Uses and Benefits

isicom retard is an approved medication intended for the management of Parkinson's disease (also known as paralysis agitans). This formulation is typically utilized as an adjunctive treatment for individuals who may experience involuntary movements or motor fluctuations while taking their current, conventional medication containing the same active substances (levodopa/carbidopa).

The medication's benefit lies in its contribution to the control of motor signs and symptoms associated with the disease. It aims to provide relief from the primary features of parkinsonism, such as tremor, rigidity, and slowed movements (bradykinesia). The controlled-release design of the tablet is meant to sustain therapeutic levels of its components, which supports the reduction of “off” periods—times when the effects of the previous dose have subsided and symptoms return. Treatment with this medication may assist in improving overall motor function and support daily activities for patients with Parkinson's disease.

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Eligibility and Restrictions for Use

The eligibility for using Isicom Retard (carbidopa/levodopa prolonged-release) is strictly defined by regulatory documents, which establish populations who must not use the medicine and those who require conditional use. The medicine is primarily approved for the adult population.

Contraindicated Populations

Use is contraindicated in patients with the following conditions, as stated in official labeling:

  • Concurrent or recent use of nonselective MAO inhibitors.
  • Diagnosis of narrow-angle glaucoma.
  • A history of malignant melanoma or the presence of suspicious, undiagnosed skin lesions.

Restricted and Conditional Use

Certain populations must use the medicine with caution and often require monitoring:

  • Patients with severe or residual cardiovascular disease (e.g., arrhythmias) or major psychotic disorders.
  • Patients with underlying hepatic or renal impairment or a history of peptic ulcer disease.

Age and Reproductive Status

Population Group Eligibility Status (Regulatory Wording)
Pediatric (Under 18) Safety and efficacy have not been established; use is not recommended.
Pregnancy May cause fetal harm based on animal data (no adequate human studies).
Lactation Levodopa is present in human breast milk; a decision must be made to discontinue the drug or nursing.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define specific drug and product interactions with isicom retard (Levodopa/Carbidopa prolonged-release), establishing constraints based on pharmacokinetic or pharmacodynamic effects.

Classification Interacting Agents & Constraint
Contraindicated Combinations Nonselective Monoamine Oxidase (MAO) Inhibitors must not be co-administered due to the documented risk of precipitating a severe hypertensive crisis. A washout period of at least two weeks (14 days) is required before starting isicom retard.
Exposure-Altering Agents Ferrous Sulphate (Iron Supplements) are documented to reduce the absorption and bioavailability ( AUC) of both components; administration must be separated by at least two hours. COMT Inhibitors increase Levodopa plasma levels and half-life.
Pharmacodynamic Effects Dopamine D2 Receptor Antagonists (e.g., specific antipsychotics) may reduce or reverse the medicine's effectiveness. Co-administration with Antihypertensive agents may lead to symptomatic postural hypotension due to additive effects.
Food and Supplements High-protein diets may interfere with the absorption and transport of Levodopa due to competition with Large Neutral Amino Acids (LNAAs). Alcohol (Ethanol) may potentiate some central nervous system effects, leading to additive CNS depression. The combination product can be taken with Pyridoxine ( Vitamin B6) because Carbidopa inhibits its peripheral interaction with Levodopa.

These interaction statements are based strictly on official regulatory prescribing information, outlining which substances interact, the nature of the interaction, and required timing constraints.

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Mechanism of Action

The core mechanism involves the prodrug Levodopa being transported across the Blood-Brain Barrier (BBB) via the L-type Amino Acid Transporter (LAT1). In the CNS, Levodopa is converted into Dopamine by the DOPA Decarboxylase (DDC) enzyme, leading to agonism of postsynaptic Dopamine Receptors ( D1– D5). This cascade replenishes Dopamine signaling within the Nigrostriatal Pathway, resulting in the modulation of motor control circuits. The second component, Carbidopa, acts as a selective inhibitor of DDC exclusively in peripheral tissues. This peripheral block increases the fraction of Levodopa available for central conversion. Furthermore, the prolonged-release (Retard) formulation supports a gradual delivery profile, which leads to a continuous, non-pulsatile stimulation of central Dopamine Receptors, sustaining the modulation of basal ganglia physiological activity.

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Dosage and Administration Information

How isicom retard is Used

isicom retard (prolonged-release carbidopa/levodopa) is administered exclusively via the oral route for the long-term management of its approved condition. The medicine utilizes an extended-release tablet formulation designed to provide a sustained delivery profile over several hours.

The prolonged-release tablet must be swallowed whole and must not be crushed, chewed, or divided to ensure the integrity of its controlled-release mechanism. Altering the tablet structure would compromise the intended administration pattern.


Dosing and Administration Principles

Instruction Principle
Dosing Regimen The dose is highly individualized and requires gradual titration. Dosage adjustments are made at minimum intervals of at least three days to assess the clinical response.
Frequency Typically administered in divided doses two to four times daily (b.i.d. to q.i.d.) during waking hours, with intervals generally ranging from four to eight hours.
Meal Timing The tablet may be taken with or without food. However, high-protein, high-fat, or high-calorie meals may delay the absorption and onset of the drug's action.
Transition Protocol When switching from an immediate-release (IR) levodopa product, the IR medicine must be discontinued for at least 12 hours before beginning the prolonged-release regimen.

This medicine is designed to be a continuous part of a long-term treatment plan. The prescribed rules for administration, including maintaining tablet integrity and adhering to the titration schedule, define the standardized approach to using the medicine.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for isicom retard

Evidence for the Symptomatic Management of Parkinson's Disease

This section will summarize the structure of research—including the foundation of historical controlled trials and specific comparative studies—that evaluated the study of Levodopa/Carbidopa on core motor features of Parkinson's disease.

The Levodopa and Carbidopa combination was studied in research examining the symptomatic management of Parkinson’s disease (PD). These studies were used in research exploring how symptoms change over time, particularly focusing on outcomes related to physical discomfort such as tremor and rigidity, and outcomes reflecting daily functioning or activity level. Research describes patterns observed in the studies related to outcomes related to systemic or functional imbalance. The general Levodopa/Carbidopa regimen was studied for its impact on motor features.

While the Levodopa/Carbidopa combination is widely studied, long-term effects are not fully established regarding whether the controlled-release formulation delays certain motor complications in newly treated patients. Findings were mixed in some key long-term studies regarding this specific goal, and certainty remains low on its comparative findings in this regard for de novo patients.

Studies on Managing Motor Fluctuations and "Wearing-Off"

This part will detail the research focused on the prolonged-release (retard) formulation, outlining the design of the short-term, randomized cross-over trials that investigated its study in patients experiencing periods of symptom return (off-time).

Research on the prolonged-release tablet was applied in research contexts involving fluctuating or unstable symptoms. These studies were conducted during periods of increased symptom activity and focused on comparing the effects of the prolonged-release tablet against the immediate-release tablet. Findings describe patterns observed in the studies where receiving the controlled-release formulation was associated with a difference in the reported amount of "Off" time compared to the immediate-release formulation in the study population.

It is important to note that most dedicated studies focused on "Off" time follow-up durations were limited, typically lasting only a few weeks or months. This means there is limited information for long-term outcomes regarding the sustained pattern of fluctuation control over multiple years. Furthermore, researchers noted that studies monitored a delay in the onset of measurable response when using the controlled-release tablet compared to the immediate-release tablet.

Pharmacokinetic Studies and Formulation Comparison

Research examined the pharmacokinetic profile of the prolonged-release tablet. This approach was studied for the controlled-release formulation and levels of the components in the bloodstream. Data show patterns related to the medicine’s absorption, indicating that the controlled-release system releases the active ingredients over an extended period. These findings contribute to the broader evidence landscape related to the controlled-release formulation's association with more stable concentrations.

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Frequently Asked Questions (FAQ)

Common questions about isicom retard (FAQ)


Q: What is the main purpose of Isicom Retard?

Official documents describe this medicine as a combination product intended for the symptomatic treatment of Parkinson's disease. It is designed to help manage the movement-related symptoms associated with this condition over the long term.


Q: Why is Isicom Retard sometimes used instead of other L-dopa formulations?

Official product information states that the prolonged-release formulation is intended to allow for a sustained plasma concentration of levodopa. Official research and product information state that this formulation was studied for its use in the management of fluctuating symptoms, sometimes referred to as 'off' periods.


Q: What are the most common side effects of Isicom Retard?

According to official documentation, commonly reported effects include involuntary movements (dyskinesias), nausea, and changes in mental status such as confusion. A more comprehensive overview of possible effects is available in the official safety information.


Q: Can Isicom Retard cause involuntary movements (dyskinesia)?

Yes, official product information describes dyskinesias (unwanted, uncontrolled movements) as a commonly reported effect associated with the use of levodopa/carbidopa products. This is often related to the dopamine replacement therapy itself.


Q: Is it normal to experience vivid dreams or nightmares while taking Isicom Retard?

Official regulatory documentation includes a range of psychiatric and nervous system effects, such as vivid dreams, nightmares, and insomnia, among the reported effects. These are among the experiences that are officially documented as part of the known effects of the medication.


Q: How long does it typically take for Isicom Retard to start working after the first dose?

Due to its prolonged-release design, official data indicates that the onset of measurable effects may be delayed when compared to standard, immediate-release formulations. This delay is consistent with its design to release the active ingredients slowly and provide a sustained effect.


Q: Can Isicom Retard affect my sleep or cause sudden sleepiness?

Official documents list somnolence (drowsiness) as a reported effect. Official warnings note the possibility of sudden sleep onset in some patients using levodopa/carbidopa. Guidance related to activities like driving is provided in the official documentation.


Q: Does Isicom Retard interact with common over-the-counter medications?

The official interaction section lists several classes of agents that can interact with Isicom Retard, including specific psychoactive medicines and iron supplements. It is documented that many prescription and non-prescription substances may have potential interactions, and these are detailed in the full prescribing information.


Q: Are there any specific foods, like protein, that can interfere with Isicom Retard absorption?

Official product information notes that high-protein diets may interfere with the absorption and transport of the levodopa component. This is due to competition with Large Neutral Amino Acids (LNAAs) for passage across the intestinal barrier.


Q: Can Isicom Retard change the color of my urine, sweat, or saliva?

Yes, official labeling states that the medicine may cause body fluids, such as urine, sweat, or saliva, to become dark in color. This discoloration may appear red, brown, or black and is a phenomenon described in the official labeling.


Q: What is the 'wearing off' effect, and is it common with Isicom Retard?

Official documentation refers to 'wearing off' as the return of Parkinson's symptoms before the next dose of medication is due. The prolonged-release formulation was specifically studied for its use in patients experiencing these motor fluctuations in an effort to help stabilize control.


Q: Can Isicom Retard be used by people of all ages?

The official indication is generally restricted to the treatment of Parkinson's disease, a condition that primarily affects adults. Regulatory documentation does not establish the safety and effectiveness for pediatric patients.


Q: Is Isicom Retard suitable for people who have a history of heart conditions?

Official warnings state that the medicine should be used with caution in patients who have a history of a recent myocardial infarction (heart attack) or who have pre-existing severe cardiovascular disease. Official warnings state the medicine should be used with caution due to documented potential cardiovascular effects.


Q: Does Isicom Retard have any known interaction with alcohol?

Official documentation notes that alcohol (Ethanol) may potentiate some central nervous system effects, which could lead to additive CNS depression. Guidance on alcohol consumption while taking the medicine is typically provided by a healthcare provider.


Q: Are there any specific safety warnings for elderly patients using Isicom Retard?

Regulatory guidance includes general warnings to use the medicine with caution in all patients, particularly those with serious pre-existing conditions. These warnings should be carefully considered, as such conditions may be more prevalent in the elderly population.


Q: Can taking Isicom Retard affect my blood pressure or cause dizziness when standing up?

Official documentation lists orthostatic hypotension (a drop in blood pressure when standing, causing dizziness) as a possible effect associated with levodopa/carbidopa use. Official guidance related to the risk of orthostatic hypotension typically includes caution when changing body position.


Q: What should I know about the potential for changes in impulse control with Isicom Retard?

Official warnings describe that patients taking dopaminergic medicines may experience an impulse control disorder. This can manifest as symptoms such as pathological gambling, increased libido, or excessive spending.


Q: Does Isicom Retard help with non-motor symptoms of Parkinson's disease?

While the core indication focuses on improving motor symptoms, official documents list effects on non-motor areas, such as mood, cognition, and sleep disturbances, among the reported adverse effects. The medicine's primary studied role remains motor symptom management.


Q: Is there any research on the long-term safety of Isicom Retard?

Official documentation from clinical research summarizes the safety profiles of trials, which typically cover periods of a few weeks to several months. Safety findings for the very long-term are often derived from post-marketing surveillance.


Q: What does official documentation say about the risk of melanoma when taking this drug?

Official warnings state that a potential increased risk of melanoma is documented in patients with Parkinson's disease. Official documentation notes that monitoring for skin changes may be advised by a healthcare professional.


Q: Is a loss of appetite a known side effect of Isicom Retard?

Official documentation includes anorexia (loss of appetite) and nausea as commonly reported gastrointestinal adverse effects. A persistent loss of appetite is an effect that is typically managed through ongoing monitoring with a healthcare team.


Q: Can Isicom Retard be used during pregnancy or while breastfeeding, according to official guidelines?

Official documents generally state that there is limited human data on use during pregnancy and advise that the potential benefits must be weighed against potential risks to the fetus. The medication is also reported to be excreted into human breast milk.


Q: What conditions make someone generally ineligible to use Isicom Retard?

Official contraindications—conditions that prohibit its use—include known hypersensitivity to the components, narrow-angle glaucoma, and concurrent use with nonselective monoamine oxidase (MAO) inhibitors. A full list of contraindications is available in the regulatory documentation.


Q: Are there reports of Isicom Retard causing confusion or hallucinations?

Yes, official documentation includes mental status changes such as confusion, hallucinations, and psychotic-like behavior among the reported nervous system and psychiatric effects. These reported effects are part of the spectrum of changes that are typically evaluated during treatment.


Q: Can psychiatric conditions, like depression, affect eligibility for Isicom Retard?

Official warnings note that patients with a history of severe psychoses or existing major depression should be used with caution. This is because the medicine may exacerbate these psychiatric conditions.


Q: Does Isicom Retard continue to work for many years?

Official research summaries are based on limited follow-up durations. While the medicine is intended for long-term use, the long-term pattern of therapeutic response, including motor fluctuations, is influenced by the underlying condition and individual monitoring.


Q: Are there any specific laboratory tests that may be monitored while taking Isicom Retard?

Official guidance may advise periodic evaluations of liver, kidney, and cardiovascular function, as well as blood cell counts, for patients undergoing extended therapy with this medicine.


Q: What are the official recommendations regarding driving or operating machinery while taking Isicom Retard?

Official guidance advises patients to exercise caution when driving or operating machinery. This is due to the possibility of effects like dizziness, somnolence (drowsiness), and the documented potential for sudden sleep onset.


Q: Can Isicom Retard affect vision or cause eye pain?

Official adverse reaction sections list blurred vision and, in some cases, oculogyric crises (involuntary, prolonged upward deviation of the eyes) as reported ophthalmologic effects. Patients with glaucoma are generally cautioned against using this medicine.


Q: What is the current state of research regarding Isicom Retard's effect on disease progression?

Official research is focused on the symptomatic management of Parkinson's disease. There is no evidence in regulatory documents to support a claim that the medicine alters the underlying progression of the condition.


Q: Does Isicom Retard help specifically with the tremor symptom?

Official documentation notes that clinical trials examined the medicine’s effect on core motor features of Parkinson's disease, which specifically includes tremor and rigidity. It is intended to manage the symptoms of the condition.


Q: Are there any known withdrawal effects if Isicom Retard must be temporarily stopped?

Official warnings note that abrupt discontinuation or rapid dose reduction can lead to symptoms resembling Neuroleptic Malignant Syndrome (NMS), which can be severe. Official warnings note that changes to the treatment should be managed carefully to avoid potential complications.


Q: Is it common for Isicom Retard's effects to fluctuate (on/off periods)?

Official documentation describes the occurrence of motor fluctuations, including 'on/off' phenomena, as effects that may occur during treatment with levodopa/carbidopa. The prolonged-release formulation is often used to help stabilize these fluctuations.


Q: Can the medication affect mood or cause increased anxiety?

Official adverse reaction sections include changes in mental state, such as depression (with or without suicidal tendencies), anxiety, and agitation among the reported psychiatric effects. These are considered potential effects of the medicine.


Q: Does Isicom Retard require any special storage conditions?

Official guidance typically specifies storing the medicine at room temperature, away from moisture and heat, in a tightly closed container, to maintain its stability.


Q: Is the risk of dyskinesia higher with controlled-release forms like Isicom Retard?

Official research summaries report that some studies comparing the controlled-release and immediate-release formulations found mixed results regarding whether the controlled-release form delays the onset of certain motor complications, such as dyskinesia, in newly treated patients.


Q: What does the research say about Isicom Retard's effect on energy levels and fatigue?

Official adverse reaction reports include asthenia (weakness or lack of energy) and fatigue among the possible general effects. The medicine's effect on energy can vary widely among individuals.


Q: Is it described in official sources that Isicom Retard can worsen existing glaucoma?

Yes, official product information lists narrow-angle glaucoma as a contraindication for the use of the medicine. It is not generally advised for patients with this specific eye condition.


Q: Is it true that Isicom Retard is considered the most effective medication for Parkinson's symptoms?

Official regulatory documents describe the medicine as a symptomatic treatment. These authoritative sources do not contain claims comparing its effectiveness as 'best' or 'most effective' against other available treatments, as treatment decisions are individualized.

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How should isicom retard be stored and disposed of?

Storage and Disposal Requirements for Isicom Retard

Isicom Retard must be kept at Controlled Room Temperature, specifically between 20 C and 25 C (68 F and 77 F). The medicine requires protection from environmental factors and must be shielded from light and moisture.

The product must be stored in its original container and the container must be kept tightly closed. A mandatory instruction on the label states that the medicine must be kept out of the sight and reach of children.

Regarding disposal, unused or expired Isicom Retard must be handled as pharmaceutical waste. Regulatory instructions specify that the product must be disposed of according to local regulations and should not be thrown into household trash or poured into wastewater.

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

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