Kelatine

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Kelatine

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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 Kelatine

What is Kelatine? (Penicillamine)

Property Description
Active ingredient D-Penicillamine
Form Capsules, Tablets
Pharmacological class Chelating Agent, DMARD
General purpose Metal removal and immune modification
Origin Synthetic organic compound

What Type of Medicine is Kelatine (D-Penicillamine)?

Kelatine is a prescription medicine whose active ingredient is D-Penicillamine, which functions with a dual role as both a chelating agent and a Disease-Modifying Antirheumatic Drug (DMARD). This dual classification signifies that the medicine is not used for simple pain relief but is designed to modify the body's underlying disease processes. Penicillamine acts as a chelator of heavy metals and an immunosuppressant for chronic arthritis. This means the medicine is clinically recognized for both removing toxins and controlling the destructive inflammation caused by certain chronic diseases.

Composition and Origin: Is Kelatine Synthetic?

The medication is based on D-Penicillamine, a synthetic organic compound that is an amino acid derivative derived from penicillin metabolism. The compound is strictly the D-enantiomer, as the L-form is toxic, confirming the critical role of chemical precision in its manufacture. It is a single-ingredient product intended for oral administration, available as capsules or tablets. As a functional agent, Penicillamine forms stable, soluble complexes with copper and other heavy metals, facilitating their excretion. This confirms the medication’s primary job is to chemically bind to and help the body eliminate unwanted metallic substances.

General Purpose: Why is Kelatine Used?

The general purpose of D-Penicillamine is to provide a fundamental, long-term therapeutic intervention by directly influencing molecular and immunological actions. Its core benefit is facilitating the body's elimination of toxic accumulations of heavy metals through chelation. Additionally, it aids in preventing the formation of certain stone deposits by chemically altering the compound cysteine into a more soluble form. This mechanism also involves modifying the destructive inflammatory processes observed in chronic autoimmune conditions, ultimately aiming to suppress disease activity and mitigate long-term damage in patients.

What side effects are possible with Kelatine?

Kelatine: Possible Side Effects and Safety Information

The information presented here is based strictly on the safety data and adverse reaction classifications as formally documented by authoritative government regulatory agencies worldwide.

Note on Regulatory Data Availability:

Official regulatory documents from major global health agencies, such as the U.S. Food and Drug Administration (FDA), the European Medicines Agency (EMA), and Health Canada, which define a drug's official safety profile, do not contain information for a registered medicinal product named "Kelatine." Therefore, a comprehensive, frequency-classified safety map cannot be constructed based on the required governmental sources.

Adverse Reaction Scope Regulatory Finding
Key Adverse Reaction Categories Data not available from authoritative government drug labels.
Frequency Classification (e.g., Very Common, Rare) Formal classification is not documented in official sources.
System-Organ Classes Involved No officially documented system-organ-class groupings are retrievable.
Serious Adverse Reactions Specific serious adverse reactions are not formally documented in regulatory labels.
Population-Specific Safety Considerations No specific warnings or considerations for populations (e.g., pediatric, geriatric) are available in regulatory documents.
Safety-Related Restrictions Formal safety restrictions or limitations are not defined in official drug labels.

Regulatory Safety Summary:

The absence of official prescribing information means that the established regulatory framework—which relies on frequency data, MedDRA system-organ classes, and label-documented serious risks—cannot be applied to this substance. The full scope of risks and required safety monitoring, as defined by government health authorities, is not officially established.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the manifestations and required emergency response actions for Kelatine (D-Penicillamine) over-ingestion.

Documented Overdose Manifestations

Acute overdosage is associated with documented gastrointestinal distress, including nausea, vomiting, and abdominal pain. Systemic signs reported include hyperpyrexia (fever), tachycardia, and dehydration. Severe potential outcomes include thrombocytopaenia, neutropaenia, and serious renal effects such as proteinuria and haematuria, all of which necessitate immediate medical attention.

Emergency Actions and Required Monitoring

Immediate medical attention must be sought upon any suspicion of over-ingestion, especially if clinical or severe laboratory manifestations are present. The official guidance requires symptomatic and supportive care, including efforts to maintain a good diuresis, and conventional treatment for any resulting organ failure. For significant ingestions (e.g., doses exceeding 500 mg), procedures like gastric decontamination or administering activated charcoal may be documented. There is a regulatory constraint that no specific antidotes are known for D-Penicillamine poisoning.

High-Risk Considerations

Continuous monitoring of vital signs and renal function is required in an overdose setting. Furthermore, official labeling notes an increased risk of toxic reactions in patients with impaired renal function and greater overall toxicity observed in the elderly population.

Therapeutic Uses of Kelatine

What Kelatine Treats: Main Uses and Benefits

Kelatine (D-Penicillamine) is a targeted, long-term therapeutic agent used to address three specific, chronic disease domains where an underlying systemic issue causes symptoms that interfere with daily functioning. The use of penicillamine is clinically relevant for the management of Wilson's disease, cystinuria, and severe rheumatoid arthritis.

The medication is applied in addressing conditions characterized by systemic imbalance and inflammatory processes. It is relevant in contexts involving heightened systemic burden, such as:

  • Systemic Imbalance related to Copper Metabolism (Wilson's Disease): The treatment supports the long-term goal to manage the systemic imbalance of copper, helping to manage manifestations related to organ-specific functional stress, including neurologic impairments and progressive hepatic dysfunction.
  • Recurrent Manifestations of Urologic Stone Formation (Cystinuria): Its use assists in easing the symptoms related to recurrent stone formation in the urinary tract, which supports the patient during difficult episodes by easing distress.
  • Severe, Active Rheumatoid Arthritis: It contributes to easing the overall symptom load of chronic joint pain and swelling, and assists with maintaining functional stability in conditions associated with heightened symptoms and significant discomfort.

“Kelatine is commonly used as a long-term intervention for conditions involving severe systemic distress or conditions where functional stability becomes affected.”


Quick Fact: Support for Chronic Inflammatory States
Kelatine may assist with managing symptoms related to inflammatory or irritative states and is relevant for easing the discomfort of symptoms related to inflammatory or irritative states.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Kelatine (D-Penicillamine) is subject to strict population eligibility rules documented in government regulatory labeling. The medicine is contraindicated for patients with a documented history of severe blood disorders, such as Aplastic Anemia or Agranulocytosis, previously caused by Penicillamine.

Absolute non-eligibility also applies to patients with Severe Rheumatoid Arthritis who have concurrent Renal Insufficiency or kidney disease, and those receiving concomitant therapies like Gold Therapy or certain Antimalarial Drugs.

Eligibility is defined by age and physiological state. Use is established for Adults for all three primary indications. Pediatric use is approved, with eligibility starting at 6 months for Wilson's disease and 1 year for Cystinuria. Geriatric patients are permitted to use the drug, but dose selection requires caution and careful monitoring of renal function.

In Pregnancy, use is generally contraindicated. However, for Wilson's disease, use is permitted under strict monitoring, as discontinuation risks potentially fatal maternal relapse. Use is generally not recommended during Lactation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Kelatine (D-Penicillamine) has an official interaction profile structured by prohibitions on co-administration due to additive toxicity risk and mandatory timing separation requirements to maintain systemic exposure.

Contraindicated Combinations

Co-administration is formally prohibited by regulatory bodies for certain compounds due to an increased risk of severe adverse effects, particularly concerning blood disorders and renal toxicity.

Substance Category Interaction Restriction
Gold Therapy (Gold salts) Prohibited due to severe haematological and/or renal risk.
Cytotoxic Medicines Prohibited due to increased risk of bone marrow depression.
Antimalarial Medicines Prohibited due to additive risk of serious blood or kidney issues.

Exposure-Modifying and Timing-Based Interactions

Co-administration with several oral products is documented to reduce Kelatine’s absorption, leading to decreased systemic exposure. This is a common pharmacokinetic interaction based on chemical binding (chelation) in the gut.

  • Antacids, Iron Preparations, and Zinc Supplements must be administered at least one to two hours apart from Kelatine to prevent this chelation-based reduction in absorption.
  • Food similarly reduces oral absorption and necessitates administration on an empty stomach.
  • The risk of toxic reactions may be greater in patients with impaired renal function, and its use is contraindicated in moderate or severe renal insufficiency as officially stated in the drug label.

Mechanism of Action

Kelatine is a synthetic small molecule that acts as a non-competitive antagonist at the N-methyl-D-aspartate (NMDA) receptor, a ligand-gated ion channel. Kelatine binds to a site within the receptor-associated ion channel pore, restricting the influx of cations, primarily calcium ions ( Ca^2+), regardless of agonist binding by glutamate. This use-dependent blockade is most pronounced when the channel is in an open state.

Intracellularly, this inhibition of NMDA receptor function results in a reduction of glutamatergic neurotransmission across central nervous system synapses. The downstream cascade involves altered activity in various signal transduction pathways, including those regulated by calcium-dependent kinases. At the system level, the net effect is a functional dissociation between the limbic and neocortical systems, resulting in a unique state of widespread central nervous system depression, characterized by preserved brainstem function.

Dosage and Administration Information

Kelatine (D-Penicillamine) is administered solely through the oral route, available in standard capsule and tablet strengths of 125 mg and 250 mg. The medicine is defined by a strict set of administration rules, the most essential of which is the requirement to take it on an empty stomach. Specifically, the dose must be separated from any food or meal by at least one hour before or two hours after ingestion.

This separation rule also extends to other oral intake; the medicine must be taken at least one hour apart from milk, antacids, and other non-essential medicines, and at least two hours apart from iron-containing products. The prescribed frequency varies by condition. For chelation therapy, such as Wilson's disease, the total daily dose, which can range from 750 mg to 2000 mg, is typically divided into four equal doses. In contrast, therapy for Rheumatoid Arthritis often starts with a low dose of 125 mg to 250 mg once daily.

Treatment follows a slow, gradual titration protocol where dosage adjustments are made at intervals of four to twelve weeks, rather than daily. Standard clinical protocols specify dosage limitations for certain groups; for example, the initial daily dose for elderly patients with Rheumatoid Arthritis should not exceed 125 mg. Additionally, the regimen may include requirements for supplementation with Pyridoxine (Vitamin B6) and, for patients managing Cystinuria, the consumption of copious amounts of fluid is a mandatory procedural condition.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Kelatine

Evidence for Use in Wilson's Disease

Kelatine (D-Penicillamine) was studied for its use in managing systemic copper accumulation in Wilson's disease. The evidence base for this use includes historical and long-term observational studies and retrospective cohort analyses that have tracked patients over extended periods. These studies examined crucial outcomes related to copper metabolism, specifically monitoring the levels of copper in the urine and blood. Research also explored the long-term impact on outcomes related to systemic or functional imbalance. The studies included both adults and children who were diagnosed with the condition.

Long-term research monitored measurable shifts in copper excretion. The long-term observational cohorts described patterns observed in the studies related to outcomes reflecting daily functioning or activity level in patients maintained on therapy. However, there is a limited volume of modern, blinded randomized controlled trials (RCTs) directly comparing Kelatine to alternative chelating therapies. The historical data can be heterogeneous, and certainty remains low regarding its relative performance when measured against the most recent treatments available today.


Evidence for Use in Cystinuria

Kelatine was evaluated in patients with cystinuria, a condition characterized by fluctuating or episodic manifestations of kidney stone formation. The research base includes pharmacological studies that examined the drug’s chemical effect, alongside retrospective observational studies that tracked patients over time. The studies primarily monitored the chemical concentration of cystine in the urine and explored outcomes describing episodic or acute changes (stone formation/recurrence) in the observed groups.

Studies reported measurements of the medicine's ability to chemically alter cystine, making it more soluble. The observational findings describe patterns observed in the studies where use of the medication was associated with differences in outcomes related to episodic or acute changes in specific patient groups. However, the evidence is limited by a scarcity of modern, large-scale, placebo-controlled RCTs focusing on clinical recurrence rates. Data for certain groups remain insufficient, particularly in providing insights into optimal usage in some pediatric subgroups.


Evidence for Use in Severe Rheumatoid Arthritis

Kelatine was studied for use in conditions involving periods of heightened symptoms related to severe, active Rheumatoid Arthritis (RA). The research supporting this indication includes randomized controlled trials (RCTs) that examined the drug against comparator treatments or a placebo. These trials examined outcomes linked to inflammatory or irritative states, such as changes in swollen and tender joint counts.

The RCTs and subsequent meta-analyses generally described patterns observed in the studies related to outcomes linked to inflammatory or irritative states when compared to placebo groups. A key challenge in interpreting this evidence is that the follow-up durations were limited, typically running for less than one year. Furthermore, the trial data consistently showed high rates of patient withdrawal, suggesting that results apply only to the populations studied who could tolerate the treatment. Because the evidence base is older, comparative evidence is lacking against many currently used treatment protocols.

Key Studies & References Penicillamine: MedlinePlus Drug Information (General Overview of Uses)

Frequently Asked Questions (FAQ)

Common questions about Kelatine (FAQ)


Q: How long do people typically need to take Kelatine?

A: The length of time people take Kelatine is highly variable and depends on the specific condition being managed. For long-term conditions like Wilson's disease, use is often intended to be continuous and long-term to manage the underlying disorder. For other uses, the duration of use is determined by the healthcare team.


Q: Why does Kelatine have to be taken with food?

A: This is a common point of confusion; in fact, official product information states that Kelatine must be taken on an empty stomach. Taking the medicine with food significantly reduces how much of the drug the body absorbs. This separation is required because food reduces the medicine's absorption. Official instructions describe taking the dose one to two hours away from food or milk.


Q: How is Kelatine different from over-the-counter supplements?

A: Kelatine (D-Penicillamine) is classified as a prescription-only medicine and is regulated by government health authorities as a chelating agent and DMARD. Official government health authorities have approved and regulated it for the management of certain chronic medical conditions. Over-the-counter supplements are regulated differently and are not approved for treating these diseases.


Q: What kind of specialist usually prescribes Kelatine?

A: Kelatine is used to manage three different conditions: Wilson's disease, Cystinuria, and severe Rheumatoid Arthritis. Because of these distinct uses, it is typically prescribed by specialists focused on the relevant body system, such as a hepatologist (liver), a nephrologist (kidney), or a rheumatologist (joints and autoimmune conditions).


Q: Are there any known long-term side effects listed in official documents?

A: Official government safety documents list potential side effects but do not provide a formal frequency classification for effects experienced over the long term. Given the drug's nature, the treatment regimen often includes procedures for monitoring potential effects during therapy, regardless of the absence of a long-term list.


Q: What is the official safety classification of Kelatine?

A: Kelatine (D-Penicillamine) is officially classified as a product that can cause fetal harm if used during pregnancy, which is why its use is generally contraindicated. However, in cases of Wilson's disease, the management of the maternal condition is undertaken with close medical supervision, as stopping treatment may be fatal to the mother.


Q: Is the evidence for Kelatine from large clinical trials?

A: The evidence base supporting the approval of Kelatine is often drawn from historical studies, including long-term observational data. Official documents note that for some indications, there is a recognized limited volume of modern, blinded randomized controlled trials (RCTs) directly comparing it to newer treatment alternatives.


Q: How quickly does Kelatine start working after taking it?

A: After taking a dose, the medicine is quickly absorbed, reaching its highest level in the bloodstream within about one to three hours. However, to see the clinical benefits (such as improvements in symptoms), official sources indicate it may take several months of consistent use.


Q: Is it true that Kelatine can cause stomach upset?

A: Yes, regulatory documents list gastrointestinal disturbances among the documented possible side effects of Kelatine. This includes common reports of nausea, vomiting, and a loss of appetite.


Q: What happens if I miss a dose of Kelatine?

A: Regulatory guidance describes taking the dose as soon as it is remembered. If it is nearly time for the next dose, the missed dose is described as being skipped. The patient information advises against taking double or extra doses to make up for the one that was missed.


Q: What are the most common side effects of Kelatine?

A: Official regulatory documents list adverse reactions that have been reported by patients but do not formally classify their frequency (e.g., as 'very common' or 'rare'). Therefore, a definitive list identifying the most common effects cannot be provided based strictly on regulatory safety data.


Q: What should I do if a side effect of Kelatine feels severe?

A: Official patient guidance states that the healthcare team should be contacted immediately for guidance regarding severe symptoms or unexpected side effects.


Q: Can I take Kelatine if I have liver problems?

A: Liver problems, including hepatotoxicity (liver damage), are listed as a potential risk associated with the drug. Official warnings suggest that the medicine's use in these patients involves careful monitoring due to potential risks.


Q: What does the research say about Kelatine's long-term use?

A: The long-term use of Kelatine is supported by long-term observational studies and retrospective cohort analyses that have tracked patients over many years. This research has examined the impact on key metrics like copper metabolism in Wilson's disease and disease progression in other approved conditions.


Q: Does Kelatine have a generic version available?

A: Yes, the active ingredient in Kelatine, D-Penicillamine, is available in generic formulations in addition to its branded versions.


Q: Is it possible to be allergic to Kelatine?

A: Yes. Official drug labeling states that Kelatine is contraindicated (meaning its use is restricted) in patients who have a documented history of hypersensitivity (an allergic reaction) to D-Penicillamine.


Q: What kind of studies have been done on Kelatine?

A: Studies supporting the use of Kelatine include historical observational studies and retrospective cohort analyses for conditions like Wilson's disease, which track outcomes over time. For severe Rheumatoid Arthritis, the evidence also includes reports from randomized controlled trials (RCTs).


Q: Is Kelatine a brand name or a chemical name?

A: The active compound, D-Penicillamine, is the chemical or generic name for the medicine. Kelatine, or other names like Cuprimine and Depen, are brand names under which the medicine is sold.


Q: Is a rash a normal side effect of Kelatine?

A: Regulatory documents list rash, itching, and hives as among the possible adverse reactions associated with Kelatine. However, the official data does not provide frequency to state how common or normal this side effect might be.


Q: Why is Kelatine sometimes prescribed instead of other options?

A: Kelatine is prescribed when a patient requires its specific mechanisms of action: copper chelation (to remove copper from the body) or its unique role as a DMARD (Disease-Modifying Antirheumatic Drug) to manage specific inflammatory conditions.


Q: If Kelatine is not working, what are the next steps typically discussed with a healthcare provider?

A: If the clinical response is insufficient, official drug protocols support the option of a dose adjustment (titration) or the discontinuation of the medicine. Therapeutic changes are decided by the prescribing healthcare provider.


Q: Does Kelatine have to be taken at the exact same time every day?

A: To maintain consistent levels of the medicine in the body, it is generally advised that the drug be taken at regular intervals and around the same time each day. Patient information indicates that doses should be taken at regular intervals and not skipped.


Q: What is the typical time frame for seeing the full effect of Kelatine?

A: According to patient information guides, a patient may need to wait two to three months of consistent use before the full, noticeable effect of Kelatine on symptoms and disease progression can be observed.

How should Kelatine be stored and disposed of?

How to Store and Dispose of Kelatine

Storage of Kelatine (D-Penicillamine) must strictly follow official regulatory requirements to maintain product stability and safety.

Storage Conditions

Kelatine must be stored at Controlled Room Temperature, defined as 20 C to 25 C (68 F to 77 F). The medicine must be kept in its original container and the cap must remain tightly closed to protect the product from moisture and excessive heat.

  • Child Safety: Like all medications, Kelatine must be kept out of the reach and sight of children.

Disposal Instructions

Unused or expired medication must be disposed of according to local regulations. Regulatory authorities recommend using a drug take-back program as the preferred method when available. It is advised not to throw the medicine into wastewater (e.g., flushing down the toilet) unless specifically directed.

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

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