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Де-Нол

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Де-Нол

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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.

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Overview of Де-Нол

Property Description
Active ingredient Bismuthate Tripotassium Dicitrate
Form Oral tablets
Pharmacological class Anti-Ulcer Agent, Mucosal Protectant
Common use Protection and healing support for the stomach lining
Origin Synthetic compound

What Type of Medicine is Де-Нол? (Identity and Classification)

Де-Нол is an anti-ulcer agent and a specialized mucosal protectant used to support the gastrointestinal system, classified within the World Health Organization’s Anatomical Therapeutic Chemical (ATC) index. Its active component is the chemically complex synthetic substance officially known as Bismuthate Tripotassium Dicitrate, also widely referenced as Colloidal Bismuth Subcitrate (CBS).

This medication is uniquely distinguished within the Gastrointestinal System Agent class because it operates by establishing a localized protective mechanism rather than primarily altering acid production. Bismuthate Tripotassium Dicitrate is clinically recognized for its essential role in combination therapies aimed at maintaining the integrity of the gastrointestinal lining.

Де-Нол Composition and Physical Form (Composition and Presentation)

The medication is a single-ingredient product delivered as oral tablets, containing the sole active component, Bismuthate Tripotassium Dicitrate. This presentation ensures delivery via the oral route of administration.

The compound is intentionally formulated to achieve a specific colloidal form in the stomach, a characteristic necessary for its cytoprotective function. The specific synthetic structure of this bismuth salt allows it to selectively adhere to damaged tissue proteins, facilitating its ulcer-binding capability.

What is the General Purpose of Де-Нол? (High-Level Benefit)

The general therapeutic purpose of Де-Нол is to actively support the healing of mucosal injuries and provide relief from associated irritation, such as discomfort that may arise from superficial erosions in the stomach lining. This protection occurs through the formation of a physical barrier over ulcers, shielding them from the corrosive effects of gastric acid and pepsin. A crucial, recognized benefit of the bismuth compound is its associated antimicrobial activity against the Helicobacter pylori bacterium, which is a key factor in the recurrence of certain digestive issues.

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What side effects are possible with Де-Нол?

Possible Side Effects and Safety Information

The safety profile of Bismuthate Tripotassium Dicitrate (Де-Нол) is formally classified based on frequency and system involvement, according to official regulatory documents.


Frequency-Classified Adverse Reactions

The adverse effects are categorized to distinguish between common, expected physical changes and rare, serious reactions.

Classification Examples of Reactions
Common Darkening of stools (black feces), Constipation
Uncommon Hypersensitivity reactions (e.g., skin rash, pruritus, urticaria)
Very Rare Encephalopathy, Anaphylactic reaction

System-Organ-Class Groupings and Serious Risks

The official labeling groups side effects by the physiological system affected. The most frequently observed reactions affect the Gastrointestinal system, where the black stool discoloration is a common, non-serious result of bismuth sulfide formation.

Rare, serious reactions affect the Nervous system (encephalopathy) and the Immune system (anaphylactic reaction). The risk of encephalopathy is explicitly linked to systemic bismuth accumulation.


Population and Exposure Restrictions

Safety statements in regulatory documents strictly limit the use of this medicine based on certain health conditions and duration of exposure:

  • Severe Renal Impairment is an absolute contraindication due to the significantly increased risk of systemic bismuth accumulation and subsequent toxicity.
  • The risk of neurotoxicity is tied to prolonged administration or exceeding high cumulative doses. Treatment duration is typically restricted to manage this exposure risk.
  • The medication is generally not recommended in children under 12 years of age due to lack of established safety data.
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Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Bismuthate Tripotassium Dicitrate overdose focuses on the risks associated with excessive systemic absorption of bismuth. Overdose may result from a substantial single ingestion or chronic exposure above the recommended limits.

Documented manifestations often begin with gastrointestinal effects, such as nausea, vomiting, and abdominal pain. More severe, delayed, and potentially life-threatening complications involve two major physiological systems: the Renal System (Nephrotoxicity) and the Central Nervous System (Neurotoxicity). Nephrotoxicity can lead to acute renal failure, and neurotoxicity may progress to bismuth encephalopathy, characterized by confusion, tremor, and incoordination. Acute renal failure has been specifically documented in pediatric and adolescent patients following overdose.

Immediate medical attention is required upon suspicion of either substantial acute overdose or chronic excess ingestion. Urgent hospital monitoring is necessary if neurological symptoms or signs of acute renal failure develop, as these outcomes are classified as severe. Overdose management is primarily symptomatic and supportive, requiring the monitoring of renal and liver function for several days due to the delayed onset of systemic toxicity. For patients presenting within one hour of ingestion, gastric lavage may be considered.


Connection to the overall overdose profile: Regulatory documents define the overdose profile for this drug by focusing on the risk of systemic bismuth absorption, which results in documented nephrotoxicity and neurotoxicity. This profile mandates that patients seek immediate medical attention for suspected overdose due to the potential for severe, delayed, and life-threatening complications, requiring procedural interventions and continued hospital monitoring as described in the official instructions for management.

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Therapeutic Uses of Де-Нол

What Де-Нол treats: main uses and benefits

The use of Bismuthate Tripotassium Dicitrate (Де-Нол) is applied in contexts requiring additional symptomatic support in situations related to the gastrointestinal tract. The main areas of application include gastric and duodenal ulcers, and it is also used in complex treatment for the eradication of Helicobacter pylori bacteria.

  • Relief of discomfort and digestive support The medication can be used to manage symptoms associated with physical discomfort in the upper gastrointestinal tract, such as heaviness, bloating, or heartburn, which can create noticeable interference with routine activities. It can assist in easing the overall burden of symptoms, supporting daily comfort during these periods.

  • Assistance during exacerbations and relapses Де-Нол is used in clinical situations characterized by periods of intensified symptoms, which may be associated with chronic gastritis or duodenitis. It provides a supportive effect. Its application can contribute to easing the overall burden of symptoms during acute or recurrent episodes.

“The use of the medicine can contribute to the relief of discomfort in the digestive system during episodes of increased tension.”

  • Symptomatic support for functional tension The use of the medication is considered relevant in conditions where groups of symptoms cluster into patterns requiring additional symptomatic management.

  • Elimination of sudden or cluster manifestations The medicinal product can be part of therapy aimed at the additional management of symptoms that manifest suddenly or become temporarily overwhelming. Its use can provide supportive relief in situations where temporary assistance is needed.

Quick Fact: Relief for Physical Discomfort

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Eligibility and Restrictions for Use

The eligibility to use Де-Нол (Bismuthate Tripotassium Dicitrate) is strictly defined by regulatory authorities and centers on patient physiological capacity and life stage. The default eligible population is Adults with normal organ function.

Eligibility Status Description
Absolute Contraindication The medicine must not be used by patients with severe renal impairment due to the risk of systemic bismuth accumulation. It is also contraindicated for individuals with known hypersensitivity to the drug or any of its excipients.
Reproductive Status Use is contraindicated during both pregnancy and lactation (breastfeeding), as formally stated in official regulatory documentation.

Age Group & Organ Restrictions Official Regulatory Rule
Pediatric Use The medicine is contraindicated in children under 12 years of age.
Conditional Use Patients with impaired renal function (non-severe) require heightened caution. Use is also not recommended in cases of severe hepatic impairment. Older adults should exercise caution due to the potential for age-related decline in organ function.

The official regulatory profile restricts use based on the need for the patient to safely process and excrete the compound, making renal capacity the critical eligibility factor.

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What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The most clinically significant interaction involving bismuth subcitrate potassium (Де-Нол) is a pharmacokinetic effect with certain categories of medicines that reduce stomach acidity.

Interacting Product Categories and Medicines:

  • Proton Pump Inhibitors (PPIs): Co-administration with acid-suppressing agents, such as Omeprazole or other PPIs, can significantly increase the systemic absorption of bismuth from Де-Нол. This interaction is mediated by the rise in intragastric pH, which promotes the solubility and systemic uptake of the bismuth component.
  • Other Bismuth-Containing Products: Concomitant use with other bismuth salts, such as bismuth subsalicylate, may cumulatively increase the risk of systemic bismuth exposure and potential toxicity.

Clinical Relevance and Restrictions:

  • Risk of Toxicity: The increased systemic absorption of bismuth carries the risk of elevated plasma levels, which, upon prolonged exposure, can lead to toxic effects on the central nervous system, liver, and kidneys.
  • Timing Constraint: When bismuth subcitrate potassium is used in combination with PPIs as part of an H. pylori eradication regimen, it is recommended that the medication be taken with food to minimize the systemic absorption of bismuth. Prolonged use of this combination beyond the prescribed short-term treatment duration should be avoided unless medically supervised.
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Mechanism of Action

The mechanism of action of Bismuthate Tripotassium Dicitrate is highly localized to the gastrointestinal lining and is defined by its multi-mechanism approach to mucosal stabilization. The drug functions by undergoing rapid precipitation in the stomach's acidic environment, creating a colloidal polymer that is highly attracted to the exposed proteins at the base of mucosal injuries. This chemo-adhesion forms a physical, acid-resistant layer that isolates the underlying tissue from the chemical and enzymatic activity of gastric juice and pepsin.

Concurrently, the compound interacts with gastric mucosal cells to stimulate the Prostaglandin E2 ( PGE2) pathway, which leads to the increased synthesis and release of high-quality mucus glycoproteins and bicarbonate ( HCO3^-) ions. This modulation results in an enhancement of the natural defense barrier against back-diffusion of hydrogen ions. Furthermore, the bismuth ion ( Bi^3+) directly inhibits essential enzymes, such as urease, and causes structural disruption of the cell wall of the bacterium Helicobacter pylori. This local enzyme inhibition achieves a local reduction in H. pylori density, suppressing a key physiological factor that drives mucosal injury.

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Dosage and Administration Information

Administration Scope

The administration of Bismuthate Tripotassium Dicitrate is limited exclusively to the oral route via tablets. The standard adult daily dose is equivalent to 480 mg of bismuth trioxide (Bi2O3), delivered either as one 120 mg tablet taken four times daily, or two tablets taken twice daily. This dosing must be adhered to for a defined duration, with continuous use restricted to a maximum of 8 weeks.

The administration protocol requires the dose be taken approximately 30 minutes before the main meals and one dose at bedtime. This precise timing ensures the drug's specialized function. Furthermore, the tablet must be swallowed whole with water. A critical procedural condition is the avoidance of milk, dairy products, or fruit juices during the 30-minute period surrounding the dose, as these substances can interfere with the formation of the active compound. Use in patients with renal impairment requires special consideration and monitoring due to the risk of systemic bismuth accumulation, as dosage is dependent on kidney function status. If a dose is missed, the protocol involves resuming the next scheduled dose at the usual time, without taking a double dose.


Instruction Classifications (High-Level)

Classification Detail
Administration method type Oral ingestion.
Frequency pattern Daily, via a Four times daily (QID) or Twice daily (BID) regimen.
Prescribing basis Based on standardized prescribing information and established protocols.
Use-context constraints Must be used in a time-limited course and requires strict timing relative to meals and consumption of other liquids.

Resulting Procedural Structure

Official step sequence:

  • Take the prescribed 120 mg tablet(s) either four times daily or two times daily to total 480 mg Bi2O3 equivalent per day.
  • Administer the dose 30 minutes before a meal or at bedtime.
  • Swallow the tablet whole with water.
  • Do not consume milk, dairy, or fruit juice 30 minutes before or after the dose.
  • Adhere strictly to the defined maximum treatment duration of 8 weeks.

Connection to the overall use protocol (3 sentences): The instructions define a structured administration protocol centered on achieving a consistent 480 mg daily intake while managing the compound's physical interaction with the gastrointestinal environment. The precise timing relative to meals and the explicit restrictions on concurrent substances are procedural steps designed to allow the bismuth complex to function correctly. The maximum 8-week duration places a strict, established limit on the course length for standardized use.

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Recent Clinical Evidence

Evidence for Peptic Ulcer Healing Studies

Research has explored the role of Bismuthate Tripotassium Dicitrate in the patterns of peptic ulcers (gastric and duodenal). Randomized Controlled Trials (RCTs) examined the medication against a placebo or other anti-ulcer treatments. A primary outcome studied was ulcer resolution, measured via internal examination (endoscopy), along with monitoring of ulcer recurrence (relapse) in longer-term observational studies. Many comparative studies, however, involved medications that are not currently the primary standard of care, which limits the applicability of those comparisons.


Evidence for Use in Helicobacter pylori Eradication Regimens

Research has also examined this medication for its role as a component within specific multi-drug regimens aimed at addressing the H. pylori bacterium. RCTs explored these regimens, and the core research task was to monitor the measured eradication success rate several weeks after participants finished treatment. Reported eradication success rates may not apply universally due to differing and changing local antibiotic resistance patterns. This area requires ongoing research due to the high variability observed in global comparisons.


Studies on Chronic Gastritis and Mucosal Erosions

Studies explored Bismuthate Tripotassium Dicitrate in the context of inflammatory states like chronic gastritis and duodenitis. These trials often focused on short-term outcomes, monitoring histological improvement (changes in inflammation) and patient-reported outcomes describing perceived discomfort. However, follow-up durations were often limited in these studies, meaning there is limited information for long-term outcomes for patients with non-ulcerative erosions.


Research Gaps and Uncertainties

Most extensive research findings describe group patterns in adult populations. Research for certain groups of people remains less comprehensive, including data for children and older adults. Furthermore, the overall evidence for long-term outcomes and continuous use is not fully established. Research describes that findings reflect the specific conditions under which they were conducted and provide context but not individual predictions.

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Frequently Asked Questions (FAQ)

Common questions about Де-Нол (FAQ)

Q: Does Де-Нол affect the absorption of other non-related medications?

A: Official information indicates that the active ingredient in Де-Нол may interfere with the absorption of certain medications. This effect is known to occur specifically with some drugs, such as tetracycline antibiotics. Regulatory advice often emphasizes the importance of spacing out the administration of these medications when taken together.

Q: Can Де-Нол cause temporary darkening of the tongue?

A: Yes, official labeling describes that temporary darkening or blackening of the tongue is a recognized change associated with the use of Де-Нол. This is considered a non-serious, reversible side effect that results from the bismuth compound reacting in the mouth.

Q: Do studies suggest Де-Нол has anti-inflammatory properties?

A: Research has explored the role of this medication in inflammatory states, such as chronic gastritis. Official pharmacological descriptions note that the drug works in part by stimulating the Prostaglandin E2 pathway, which is associated with enhancing the natural mucosal defense barrier of the stomach.

Q: How is the bismuth component of Де-Нол eliminated from the body?

A: Most of the bismuth compound remains localized in the gastrointestinal tract and is excreted in the stool. However, the small amount of bismuth that is absorbed into the bloodstream is primarily eliminated by the kidneys through urinary excretion. This renal elimination pathway is why patients with kidney concerns require special monitoring or consideration before use, as outlined in the official documentation.

Q: Are there any known issues with taking Де-Нол and drinking coffee?

A: Regulatory-derived patient information sometimes states that substances which stimulate stomach acid production, such as caffeine-containing beverages like coffee, should be limited. This is a common precaution taken to avoid interference with the drug's intended healing effects on the stomach lining.

Q: Is it important to space out Де-Нол from tetracycline antibiotics?

A: Yes, regulatory documents specifically address this interaction. The active ingredient in Де-Нол may interfere with the absorption of tetracycline antibiotics. Official recommendations generally suggest separating the administration of these two types of medicine by two to three hours.

Q: Are there any known issues with taking Де-Нол and drinking alcohol?

A: Regulatory information indicates that the use of alcohol is generally discouraged during treatment with Де-Нол. This is because alcohol can increase the production of stomach acid, which may interfere with the intended protective and healing action of the medication on the stomach lining.

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How should Де-Нол be stored and disposed of?

How to Store and Dispose of Де-Нол

Storage and disposal must strictly follow the requirements documented in official regulatory labeling for the bismuth subcitrate tablets. Adherence to these conditions is essential for maintaining product stability and integrity.

Official Storage Requirements

The product must be stored at a temperature below 25 C. It is mandatory to keep the medication in the original package to ensure protection from light and moisture, as specified in the prescribing information. For safety, the tablets must be stored out of the reach and sight of children.

Disposal of Unused Product

Any unused or expired tablets must be disposed of according to local pharmaceutical waste regulations. Regulatory guidelines generally advise against discarding the product via household trash or wastewater systems to prevent environmental contamination.

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

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