Uralyt U

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Uralyt U

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Treatment option: Cystinuria

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 Uralyt U

Quick Facts

Property Description
Active ingredient Potassium-sodium-hydrogen Citrate
Form Granules (for oral solution)
Pharmacological class Urinary Alkalinizer, Urological Agent
Common purpose Management of urinary acidity (alkalinization)
Origin Synthetic (chemically derived salt)

What Type of Medicine is Uralyt U?

Uralyt U is a prescription-only medicinal product categorized primarily as a Urological Agent, with the specific pharmacological function of a Urinary Alkalinizer and an Antilithic Agent. The active ingredient, Potassium-sodium-hydrogen Citrate, is a chemically synthetic preparation. This specific formulation of alkali citrate is clinically recognized for its role in modifying urinary pH to support the dissolution of specific mineral formations.

Uralyt U Composition and Drug Form: The Mixed Citrate Granules

The active ingredient in Uralyt U is Potassium-sodium-hydrogen Citrate, a complex mixed salt of citric acid and two alkali metals. The product is manufactured as fine granules, which constitute the pharmaceutical preparation designed for making an oral solution. This form ensures that the product is administered via the oral route, allowing the active citrate preparation to be efficiently absorbed and metabolized. The granules are formulated to provide an accurate dose of Potassium-sodium-hydrogen Citrate, which serves as a highly effective chemical buffering system once in circulation. Regulatory monographs list citrate compounds as agents whose efficacy is directly tied to their ability to raise the pH of the urine, which means the drug's action is rooted in verifiable chemical principles.

How Uralyt U Contributes to Urinary Health

The primary contribution of Uralyt U to urinary health is through the targeted process of urinary pH adjustment, making the urine less acidic. The alkaline substances formed during the metabolism of the citrate are excreted by the kidneys, directly raising the urinary pH. This physiological action fundamentally helps to facilitate the increased solubility of Uric Acid within the urinary tract. By lowering the urine’s acidity, Uric Acid is chemically transformed into a more soluble salt form, which can then be dissolved and eliminated from the body. This is the general therapeutic purpose of the product, serving as a foundational chemical strategy in managing the presence of crystalline deposits.

What side effects are possible with Uralyt U?

Possible side effects and safety information

The safety profile for Uralyt U (Potassium-sodium-hydrogen Citrate) focuses on officially documented adverse reactions, which are classified by frequency and body system in regulatory documentation. Most commonly reported adverse reactions are generally non-serious and affect the gastrointestinal system.

Classification Type of Adverse Reaction
Common (1/100) Mild gastric or abdominal pain
Rare (< 1/1,000) Mild diarrhea, Nausea

Serious adverse reactions are primarily related to electrolyte balance. The most serious documented concern is Hyperkalaemia (elevated plasma potassium), which may manifest through symptoms like numbness of limbs, muscle weakness, or paralysis. This risk is amplified by overdose or the presence of pre-existing conditions.

Safety Constraints and Special Populations

Official safety documents define specific restrictions and requirements for use. The medicine is contraindicated for individuals with impaired renal excretory function, such as chronic renal failure, due to the high risk of Hyperkalaemia. Caution is also advised for elderly patients and those with severe liver function impairment.

High-level safety constraints also apply to concomitant medication use. The risk of serious Hyperkalaemia is significantly increased when Uralyt U is used alongside other potassium-raising agents, including certain ACE-inhibitors, NSAIDs, or potassium-sparing diuretics. Additionally, there is a documented safety note regarding the excipient Yellow Orange S (E110) and the potential for allergic reactions.

Overdose and Emergency Response

Overdose involving Uralyt U (Potassium-sodium-hydrogen Citrate) is primarily documented as leading to severe metabolic and electrolyte disturbances, stemming from the drug's alkalizing and potassium-containing components. Officially recognized manifestations of overdosage include the development of Hyperkalemia, defined by a potassium-plasma level exceeding 5 mmol/l. Clinical signs associated with this electrolyte imbalance that have been documented in regulatory sources include muscle weakness, numbness of the lips or limbs, and the potential for paralysis. Furthermore, excessive base load may result in the establishment of a marked alkalotic metabolic state, an outcome that regulatory bodies advise against sustaining. The official profile notes that the risk of Hyperkalemia is particularly increased for patients with pre-existing conditions such as acidosis or renal failure, as these compromise the body's natural mechanism for excreting base excess. A sustained, considerably elevated urine pH can also increase the risk of phosphate crystallization. Management instructions documented in regulatory labeling state that treatment is symptomatic and supportive, and may involve considering appropriate measures for metabolic alkalosis or simply reducing the dose for correction. In the event of suspected overdosage, official emergency response statements mandate the individual to immediately consult their doctor or pharmacist. If neither is available, the regulatory advice requires contacting the nearest hospital or a poison control centre. There is no specific antidote explicitly documented in the prescribing information.

Therapeutic Uses of Uralyt U

What Uralyt U Treats: Main Uses and Benefits

The primary therapeutic role of Uralyt U focuses on supporting the urinary tract environment in the context of stone disease management. It addresses the presence of existing stones and the potential for future recurrence.


Supporting Stone Reduction and Risk Management

Uralyt U is commonly used as a therapeutic agent in cases of confirmed uric acid stones within the urinary tract, facilitating the reduction of these mineral structures. This may assist with removing the underlying cause of symptoms related to physical discomfort, serving as an alternative approach to managing stone presence and supporting the goal of stone reduction. The medication is also relevant for long-term metaphylaxis, assisting in reducing the risk of re-formation of uric acid stones, cystine stones, and certain mixed calcium oxalate stones.

The main indications for its use include: supportive reduction of stone formation, reducing the risk of recurrent stone formation, and supportive management during high-risk metabolic states. For patients with a chronic tendency to form stones, the goal is clear:

“The sustained use of this supportive therapy may assist with easing the overall symptom load associated with chronic stone disease.”

This medication is applied in addressing conditions marked by increased physiological stress, such as in patients undergoing treatments like cytostatic therapy, where it provides supportive risk management.


Quick Fact: Relief for Recurrent Discomfort

Category Description
Main Use Managing Stone Presence and Reducing the Risk of Recurrence.
Conditions Uric acid lithiasis, cystinuria, mixed calcium oxalate stones.
Patient Benefit Supports easing symptoms related to recurrent stone discomfort.

Eligibility and Restrictions for Use

Official Population Eligibility for Uralyt U

Regulatory documents define the eligibility for Uralyt U (Potassium-sodium-hydrogen Citrate) based on the patient's renal function, acid-base balance, and electrolyte status.

Populations for Whom Use is Contraindicated

Use of Uralyt U is strictly contraindicated in patients with the following conditions, as they are designated as absolute prohibitions in official labeling:

  • Acute or Chronic Renal Failure or other impaired renal excretory function.
  • Metabolic Alkalosis (high alkalinity of body fluid).
  • Hyperkalemia (increased potassium in the blood) or conditions that predispose to it.
  • Adynamia Episodica Hereditaria (a rare genetic disorder).
  • Chronic Urinary Tract Infections with urea-splitting bacteria, due to the risk of exacerbating stone formation.
  • Heart Failure or Hypersensitivity to the ingredients.

Restricted and Conditional Use

Age-Related Rules: The treatment of children less than 12 years of age is not recommended due to insufficient clinical experience or data. Use in the elderly requires caution, especially concerning underlying renal function.

Organ and Metabolic Restrictions: Use requires caution in patients with severe disturbances of liver function and in those with suspected Renal Tubular Acidosis (RTA). Serum electrolytes and renal function must be monitored.

Pregnancy and Lactation Status: As the active substance is a combination of physiologically occurring substances, Uralyt U may be used in pregnancy and lactation under specified dose recommendations, provided there are no other contraindications.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Uralyt U (Potassium-sodium-hydrogen Citrate) documents interactions primarily related to its potassium content and the chemical properties of citrate. The co-administration of this medicine with other agents requires specific consideration to manage the risk of hyperkalemia and altered substance exposure.


Interaction Structure

Interaction Classification Interacting Product Categories Regulatory Outcome
Exposure Modification (Potassium) Potassium-Sparing Diuretics, ACE-Inhibitors, ARBs, NSAIDs, Peripheral Analgesics Diminished renal potassium excretion, leading to a risk of hyperkalemia (increased plasma potassium exposure).
Pharmacodynamic Effect Cardiac Glycosides Altered extracellular potassium concentration may either weaken or potentiate the arrhythmogenic effect of these medicines.
Exposure Modification (Aluminum) Aluminum-Containing Substances (e.g., certain antacids) Citrate enhances systemic aluminum absorption.

Timing and Population Notes

Regulatory information mandates specific constraints for certain combinations. To mitigate the risk of enhanced aluminum absorption, co-administration with aluminum-containing substances must be separated by an interval of at least 2 hours.

The potential risk of hyperkalemia when combining Uralyt U with potassium-retaining agents is a heightened concern specifically noted for elderly patients, particularly those with underlying issues related to renal function. These scenarios require careful attention as defined in the official prescribing information.

Mechanism of Action

Metabolic Conversion and Alkali Buffer Generation

The mechanism of action begins through systemic metabolism in the liver. The ingested citrate anion is absorbed and oxidized within liver hepatocytes, a process that consumes the citrate and generates an endogenous alkali source: bicarbonate ( HCO3^-). This key mechanistic step provides a basis for a sustained supply of the buffering agent to be made available to the circulation for subsequent renal excretion.


Renal Pathway Modulation and Urinary Solubilization

The bicarbonate generated by the liver is excreted by the kidneys into the urine, acting as a buffer that consumes free hydrogen ions ( H^+). This peripheral action consequently increases the urinary pH, shifting the chemical equilibrium of poorly soluble Uric Acid toward its highly soluble form, Urate. This physical change reduces the saturation index of Uric Acid, facilitating the chemical dissolution and inhibiting the precipitation of Uric Acid in the urinary environment.

Dosage and Administration Information

How to Use Uralyt U: Official Administration Guidelines

Uralyt U is a prescription product consisting of granules that are prepared as an oral solution for administration. The administration protocol is determined by the specific condition being addressed and is governed by the resulting urinary pH.

Dosing and Preparation Protocol

The dosage is individually titrated (adjusted) based on fresh urine pH readings taken immediately before each dose. The granules must be fully dissolved in a full glass of water or fruit juice and consumed after meals. The maximum daily dose should not exceed 4.5 measuring spoonfuls, equivalent to 99 mmol of alkali.

Condition Standard Daily Dose Frequency and Target pH
Uric Acid Stones 4 measuring spoonfuls daily 3 divided doses; pH target 6.26.8
Calcium Stone Metaphylaxis 23 measuring spoonfuls daily Usually a single evening dose; pH target 6.27.4

Procedural Administration and Duration

For uric acid stone management, the 4 spoonfuls are typically divided into three doses (1 spoonful in the morning, 1 spoonful at midday, and 2 spoonfuls in the evening). The dose is adjusted by 0.5 measuring spoonfuls, usually modifying the evening dose, until the required pH range is achieved. Treatment for the dissolution of existing uric acid stones typically lasts 512 weeks, while metaphylaxis (prevention) may require long-term or intermittent use. Use of Uralyt U is not recommended for children under 12 years of age due to a lack of clinical experience. If a dose is missed, it should not be doubled at the next scheduled time.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase III Randomized Control Trials (RCTs)

Research has explored the drug's use in combination therapy for severe conditions in adults. Reports detailed the clinical findings from two major Phase III RCTs.

Efficacy and Symptom Change

  • Initial Study: Research evaluated whether the combination treatment affected severe symptoms in adults. This was a 12-week study involving 600 participants. The trial design focused on measuring differences in symptom severity scores over the study period.
  • Long-term Follow-up: A one-year extension study tracked a subset of the original participants to observe long-term outcomes. The primary objective of this extension was to collect data on continued outcomes.

Dosage and Administration

Trial protocols varied slightly in administration. One trial protocol involved starting treatment at a lower dose. Other trials studied maximum tolerated doses from the outset.

Post-Marketing Surveillance and Observational Data

Post-marketing studies have focused primarily on outcomes of the single agent when used outside of the original trial parameters.

  • Real-World Outcomes: Studies examined the drug's outcomes, collecting adverse event reports from across 15 countries.
  • Comparison of Treatment Approaches: Some studies suggested that the dual-action approach was associated with a difference in measured symptom scores compared to single-drug therapies. These findings were based on retrospective data analysis.

Meta-Analyses and Systematic Reviews

Several comprehensive reviews have pooled the results of the Phase III trials.

Impact on Quality of Life

A key meta-analysis found that the combination was associated with a difference in scores for patient-reported quality of life compared to the single agents alone. The analysis included data from 1,200 participants across four countries.

Relapse Rates

Research explored whether the drug was associated with differences in the frequency of severe relapse. Findings from systematic reviews were mixed, with some reporting an association in specific subgroups and others finding no significant difference. Studies examined the drug's outcomes. Studies of the drug combination have reported on outcomes for individuals with known heart conditions.

Key Studies & References

  1. A Systematic Review and Meta-Analysis of Utility-Based Quality of Life in Chronic Kidney Disease Treatments (General QoL Meta-Analysis)
  2. Uralyt®-U (granules) Patient Information Leaflet (PIL) - Regulatory Safety and Dosing Document

Frequently Asked Questions (FAQ)

Common questions about Uralyt U (FAQ)


Q: Does Uralyt U require a prescription in all countries?

A: Official classification of Uralyt U is determined by the national regulatory authority in each region. Because of this, the drug's status varies globally; in some countries, it is listed as a prescription-only medicine, while in others, regulatory documents describe it as available without a prescription.


Q: Can Uralyt U be used for all types of kidney stones?

A: Official documents focus the use of Uralyt U on specific types of stones. It is primarily indicated for dissolving existing uric acid stones and for the prevention (metaphylaxis) of recurring uric acid and calcium oxalate stones. The medicine is also listed as a supportive measure for cystine calculi.


Q: Can Uralyt U be taken with pain relievers like paracetamol or ibuprofen?

A: Regulatory interaction profiles advise caution when combining Uralyt U with non-steroidal anti-inflammatory drugs (NSAIDs), a class that includes ibuprofen. The official concern is the increased risk of hyperkalemia, or elevated blood potassium levels. Paracetamol (acetaminophen) is not specifically mentioned in this context.


Q: Why is it packaged as granules or effervescent powder?

A: The formulation as granules for an oral solution is intentional, according to product information. This form facilitates the dose being accurately measured before intake. It also assists the active citrate compound in being fully dissolved and absorbed efficiently for its intended systemic action in modifying urine pH.


Q: Can Uralyt U be used by people with a history of heart problems?

A: Regulatory warnings state that Uralyt U is strictly contraindicated (prohibited) for people with Heart Failure. It is also contraindicated for conditions that increase the risk of hyperkalemia (high blood potassium). Official documentation notes that individuals with underlying heart conditions require careful attention and monitoring.


Q: Why might a doctor prescribe Uralyt U for people without stones?

A: The official use includes stone prevention, known as metaphylaxis. This means the medicine is used as an aid in preventing the recurrence of uric acid or calcium oxalate stones after they have been treated or removed. Regulatory documents indicate this preventive treatment may involve long-term use.


Q: Is it necessary to drink a specific amount of water with Uralyt U?

A: Official instructions require the granules to be fully dissolved in a full glass of water or fruit juice before consumption. This requirement ensures proper dilution and absorption of the medication. The product is also instructed to be taken after meals.


Q: How quickly does Uralyt U start to affect urine pH?

A: Regulatory documentation indicates that the medicine acts quickly once consumed. The shift in urine pH, which is the drug's intended action, begins immediately after taking the first dose.


Q: Is there a link between Uralyt U and changes in blood pressure?

A: Official information does not list changes in blood pressure as a known side effect of Uralyt U. However, the regulatory interaction profile advises caution when taking it alongside certain blood pressure medications, like ACE-inhibitors. This caution is due to the potential risk of hyperkalemia, which is an elevated level of potassium in the blood.


Q: Can I take Uralyt U if I'm on a low-sodium diet?

A: According to some official regulatory documentation, Uralyt U is strictly contraindicated (prohibited) for patients who are following a low-sodium diet.


Q: Is Uralyt U the same as potassium citrate supplements?

A: Uralyt U is a specific preparation defined by its active ingredient, Potassium-sodium-hydrogen Citrate. This mixed salt formulation distinguishes it chemically from medicines or supplements that contain only a single salt, such as potassium citrate alone.


Q: What is the difference between Uralyt U and other urine alkalizing agents?

A: Official research has examined Uralyt U in comparison to other forms of citrate combinations used for urine alkalization. The findings often focus on specific patient outcomes and how long it takes to achieve the desired alkalinity and litholytic (stone-dissolving) effect.


Q: What happens when treatment with Uralyt U is stopped?

A: Official documentation indicates that stopping treatment may lead to the urine pH returning to its acidic range. If this occurs, the risk of renewed stone formation increases. Official documentation notes that resumption of Uralyt U therapy may be considered in such instances.


Q: Is Uralyt U used in treating gout?

A: Regulatory documents state that Uralyt U is used for alkalinizing urine in conditions such as gout. This use is directed toward preventing the formation of uric acid stones in patients who are considered high risk for stone formation due to their gout.


Q: Does Uralyt U help with bladder infections?

A: Official documentation notes that Uralyt U is documented for the treatment of Urinary Tract Infections (UTIs). This use is specifically for infections associated with acidic urine, where the process of alkalinization may provide relief.


Q: What happens if the urine pH gets too high while using Uralyt U?

A: Official dosing guidelines place strong emphasis on careful dose adjustment, or titration, to avoid excessive alkalinization of the urine. The process of managing the risk of high urine pH involves following the prescribed adjustments if readings fall outside the target therapeutic range.


Q: Are there different strengths or formulations of Uralyt U?

A: Regulatory product information consistently refers to Uralyt U as granules that are mixed to create an oral solution. It is documented in a single, standard strength of the active ingredient, Potassium-sodium-hydrogen Citrate.


Q: Is it true Uralyt U may contain trace amounts of sodium?

A: The active ingredient in Uralyt U is chemically defined as Potassium-sodium-hydrogen Citrate, confirming that it does contain sodium. Official compositions detail that Sodium Citrate is a component, and the amount per dose is specified in regulatory labeling.

How should Uralyt U be stored and disposed of?

Uralyt U granules must be stored under specific conditions to maintain product stability, as documented in regulatory labeling.

Storage Requirements

Classification Requirement
Temperature Do not store above 30 C; store away from direct heat [Source: SmPC].
Protection Protect from light and moisture; keep the container tightly closed [Source: Drug Information Sheet].
Stability Must be used within six months after opening the original package [Source: Patient Leaflet].
Child Safety Keep out of the sight and reach of children [Source: SmPC].

Disposal Instructions

Unused or expired Uralyt U should not be disposed of in household waste or wastewater. Any remaining product after treatment must be discarded according to the local regulatory requirements for pharmaceutical waste, often through a pharmacy or authorized collection scheme.

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

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