Алмагель

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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 Алмагель

What is Алмагель? An Overview

The following table provides a quick reference for the foundational properties of the drug Алмагель.

Property Description
Active Ingredients Algeldrate (Aluminum Hydroxide) and Magnesium Hydroxide
Form Oral Suspension (Gel)
Pharmacological Class Antacid
Common Use Symptomatic relief of gastric hyperacidity
Origin Synthetic (inorganic salts)

What is Алмагель and What Type of Medicine Is It?

Алмагель is a recognized pharmaceutical preparation classified as an antacid agent, which means it works by neutralizing acid rather than reducing its production. The medicine is designed for the symptomatic relief of issues arising from excess stomach acid, such as heartburn and acid indigestion. It is typically available as an over-the-counter (OTC) agent and is recognized as a combination product that works locally within the digestive tract, serving as a non-systemic solution for managing gastric hyperacidity. Aluminum and magnesium-containing compounds are recognized as key substances used to treat acid-related disorders.


Active Ingredients and Distinctive Pharmaceutical Form

Алмагель's efficacy stems from its two primary active ingredients: Algeldrate (a form of Aluminum Hydroxide) and Magnesium Hydroxide. These are synthetic, inorganic salts responsible for the core acid neutralization effect. The preparation is commonly presented as a viscous oral suspension or gel, which is the prescribed dosage form for its oral route of administration. The combination of these two agents is intentional, designed to balance their individual properties to optimize relief.


How Its Composition Provides General Relief

The fundamental purpose of Алмагель is to quickly reduce the high acidity that causes discomfort. This is achieved by combining agents with different kinetic profiles: Magnesium Hydroxide is known for its rapid neutralization, providing fast relief, while the Algeldrate component provides a slower, more sustained buffering effect. This dual action ensures prolonged relief. Furthermore, the gel formulation is designed to adhere to the stomach and esophagus lining, providing a temporary cytoprotective effect on the mucosa against the corrosive acid.

What side effects are possible with Алмагель?

Possible Side Effects and Safety Information

The official safety profile for Algeldrate (Aluminum Hydroxide) and Magnesium Hydroxide combinations is primarily characterized by effects within the Gastrointestinal system, alongside documented risks associated with Metabolism and nutrition disorders.

Official Adverse Reactions and Frequency

Regulatory documents classify the main adverse reactions, constipation and diarrhea, as Uncommon events. These opposing effects are linked to the aluminum component causing constipation and the magnesium component potentially causing a laxative effect. Other gastrointestinal adverse reactions reported include nausea, vomiting, and abdominal pain.

More severe systemic reactions are generally classified as Very Rare or of Not Known frequency, reflecting reporting from post-marketing surveillance or long-term data.

Classification Examples of Adverse Reactions (SOC Category)
Uncommon Constipation, Diarrhea (Gastrointestinal)
Very Rare Hypermagnesemia (Metabolism and nutrition)
Not Known Hypophosphatemia, Hypersensitivity reactions (Immune system)

Safety Considerations for Specific Populations and Exposure

The product's most serious risks are associated with systemic accumulation and are tied to patient health status or exposure duration. The medicine is contraindicated in individuals with severe renal impairment due to the risk of accumulation and toxicity of both aluminum and magnesium, which can lead to Hypermagnesemia and Hyperaluminemia. The latter is linked in regulatory documents to the potential for encephalopathy with long-term exposure in patients with kidney disease.

Prolonged use or high doses are officially associated with the risk of hypophosphatemia (low phosphate levels), potentially leading to bone changes such as osteomalacia. Safety notes also caution regarding the use in older adults (risk of intestinal obstruction) and infants less than two years (risk of phosphate depletion).

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the overdose profile of Алмагель (Algeldrate/Magnesium Hydroxide) by detailing both acute gastrointestinal distress and the critical risk of systemic metal toxicity. Overdosage may initially present with acute gastrointestinal symptoms such as diarrhoea, abdominal pain, and vomiting.

Documented Severe Outcomes and Required Actions

Domain Regulatory-Documented Information
Systemic Toxicity High-dose exposure carries the risk of Hypermagnesemia and Hyperaluminemia, leading to severe effects like CNS depression, depressed reflexes, hypotension, and potentially respiratory paralysis [Source: Official Prescribing Information].
High-Risk Population Patients with renal impairment face a significantly increased risk for life-threatening systemic toxicity due to impaired clearance of the active metal ions [Source: Official Prescribing Information].
Mandated Action Seek immediate medical attention or contact a Poison Control Center immediately if an overdose is suspected or if serious symptoms occur. Hospital monitoring may be required.

Treatment procedures officially described include symptomatic and supportive treatment, rehydration, and potentially haemodialysis or peritoneal dialysis to eliminate absorbed ions in severe cases. Management of severe Hypermagnesemia may involve the administration of IV Calcium Gluconate, as stated in the regulatory treatment protocols.

Therapeutic Uses of Алмагель

What Алмагель treats: Main Uses and Benefits

Symptomatic Relief of Gastric Hyperacidity

The primary therapeutic domain of this antacid is symptomatic relief for the burning pain (pyrosis), sour stomach, and overall discomfort of acid indigestion (dyspepsia). This combination is relevant when symptoms related to heightened physiological activity appear suddenly or intensify, and may be part of symptomatic management that offers short-term supportive assistance. This use contributes to easing the overall symptom load and helps improve day-to-day comfort during symptomatic periods.

The medication is commonly used across conditions presenting with acute episodes, including Gastritis, Esophagitis, and the symptomatic phase of Gastroesophageal Reflux Disease (GERD). Applied during phases of increased distress or discomfort, it helps address symptom clusters that may become intense or disruptive, supporting the overall symptom load and helping patients cope more steadily with difficult episodes across these clinical domains. Antacids are used to address these acid-related symptoms.

Intervention for Episodic Symptom Flares

The preparation is considered relevant in clinical settings marked by episodic or fluctuating symptom patterns, and is often used during phases when symptoms become more noticeable. It is applied when symptoms intensify, relevant when supportive symptom management is appropriate, and contributes to easing the overall symptom load when symptoms interfere with routine activities.


Quick Fact: Support for Symptomatic Discomfort

The medicine supports patients during episodes of heightened discomfort by easing the symptom burden of symptoms associated with acute or episodic changes, and assists with maintaining functional stability when symptoms interfere with daily functioning.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility Scope

The official regulatory profile for Алмагель (Algeldrate and Magnesium Hydroxide suspension) defines who can and cannot use the medicine based on age, organ function, and pre-existing conditions.

Populations for Whom Use is Contraindicated

Use is contraindicated in patients with severe renal impairment or kidney failure due to the high risk of aluminum and magnesium accumulation and associated toxicity. The medicine is also contraindicated in individuals with known hypersensitivity to its active ingredients or excipients, as well as in those with hypophosphatemia (low phosphorus levels).

Age-Related Eligibility and Restrictions

Adults and adolescents generally 12 years of age and older are the standard population for labeled use. Use in children under 12 years is not universally established and is often not recommended or requires prior consultation with a physician. Elderly patients are permitted to use the medicine but should be monitored due to an increased risk of intestinal obstruction.

Condition-Specific Limitations

Caution is required for patients with mild to moderate renal impairment due to the potential for metal salt accumulation. Additionally, use during pregnancy and lactation is restricted, often recommended only when the benefit is judged to outweigh the potential risk, due to insufficient controlled human data.


Connection to the overall eligibility profile: Official regulatory documents establish clear contraindications based on disease status, primarily severe renal impairment. The standard eligible group is defined as adults and older adolescents, while other populations, such as children and those with mild kidney issues, fall into a restricted or conditional use category.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Алмагель (Aluminum Hydroxide and Magnesium Hydroxide) interacts with other substances primarily through pharmacokinetic mechanisms that occur locally within the gastrointestinal tract.

Timing and Exposure Modification

The cations in Almagel bind to or alter the solubility of many co-administered oral medications, causing a decreased systemic exposure of the co-administered drug. This interaction is officially documented for drug classes including Tetracycline and Quinolone antibiotics, Iron Salts/Supplements, and Oral Bisphosphonates.

To manage this effect, regulatory documents mandate Timing Separation:

  • General Oral Medications: Must be administered at least 1 to 2 hours apart from the antacid.
  • Specific Antivirals (e.g., Cabotegravir, Bictegravir): Require a more stringent separation, often 2 hours before or 4 hours after the antacid dose.

Pharmacodynamic and Substance Interactions

  • Pharmacodynamic Additive Effects: Co-administration with other Magnesium-Containing Preparations or Vitamin D Analogs may increase the official risk of hypermagnesemia, which is classified as a clinically significant interaction.
  • Citrate-Containing Products: Concomitant use with products or foods containing Citrates/Citric Acid (such as certain fruit juices or effervescent drug forms) is documented to significantly increase serum aluminum concentrations.

Population-Specific Interaction Notes

Patients with Renal Impairment/Severe Renal Failure are at officially increased risk of Hypermagnesemia and Aluminum Toxicity due to impaired clearance. Therefore, renally impaired patients must avoid concomitant use of Citrates/Citric Acid due to the enhanced absorption of aluminum.

Mechanism of Action

Direct Neutralization of Gastric H^+ Ions

The primary mechanism involves direct chemical neutralization of Hydrochloric Acid ( HCl) in the stomach lumen. The Magnesium Hydroxide provides a rapid-onset source of hydroxide ions ( OH^-) for immediate acid consumption, while the Algeldrate ( Al( OH)3) provides a slower, sustained buffering action. This synergistic process causes a sharp elevation of gastric pH, which is the foundational physiological change shaping the resulting physiological consequence.

Inactivation of Pepsin and Mucosal Cytoprotection

The pH increase resulting from neutralization leads to the secondary mechanism of Pepsin inactivation. By shifting the gastric environment above pH 4.0-5.0, the drug deactivates this tissue-damaging proteolytic enzyme, reducing its proteolytic capacity. Additionally, the viscous gel formulation, particularly the Algeldrate component, physically adheres to the gastric and esophageal mucosa, creating a physical barrier to the epithelial surface against the remaining acidic and enzymatic irritants.

Mechanistic Scope and Physiological Limits

The drug operates via a non-systemic, peripheral action, meaning its effect is strictly confined to the GI tract and does not involve absorption or interaction with regulatory pathways like the central nervous system or acid secretion pumps. This stoichiometric mechanism is subject to limitations, as its neutralizing capacity is finite and does not influence the parietal cell pathway responsible for the production of new acid.

Dosage and Administration Information

How to Use Алмагель (Official Administration Guidelines)


Route of Administration and Preparation

Алмагель, an antacid combination, is exclusively administered via the oral route as a liquid suspension or gel. A necessary step before taking the medicine is to shake the container well prior to measuring each dose. This procedural requirement ensures the homogeneity of the active components for correct delivery.

Dosing and Schedule

For adults and adolescents aged 12 and older, the typical single dose ranges from 10 mL to 20 mL. The dosing regimen is fundamentally intermittent and as-needed (PRN), intended for the management of episodic discomfort. Administration is generally scheduled after meals (e.g., 20 minutes to one hour after) and at bedtime. The official maximum intake limit for the standard strength suspension is typically constrained to 80 mL over a 24-hour period. Use in children under 12 years requires professional consultation.

Procedural Constraints and Duration

A primary instruction for proper use involves a mandatory two-hour separation between the administration of Almagel and other oral medications. This timing constraint prevents the antacid from impacting the systemic absorption of co-administered drugs. Furthermore, the product is intended for short-term use only. Official guidance explicitly restricts continuous self-medication to a maximum duration of two weeks, after which professional oversight is required.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Алмагель

The research landscape for antacid combinations is focused on evaluating how symptoms change and how patients report their experiences, strictly adhering to scientific reports. This overview summarizes the types of studies conducted, the outcomes researchers examined, and areas where data remain limited.


Evidence for Acute Symptomatic Relief

Research for temporary symptom relief includes Randomized Controlled Trials (RCTs) and meta-analyses that explore changes in patient comfort during episodes of acute heartburn and sour stomach. These studies monitored short-term changes in patient-reported outcomes describing perceived discomfort. Findings describe patterns related to the time-course of the antacid's action. However, the reported follow-up was typically short-term, focusing on the first few hours after a single dose. Comparative evidence is limited, and findings were mixed when this formulation was studied against other preparations, including those with additional components.


Supportive Management and Research Gaps

Research has also examined this antacid combination for symptomatic management in conditions characterized by fluctuating manifestations, such as Gastritis, Esophagitis, and Peptic Ulcer Disease. Evidence related to these conditions is derived largely from older clinical trials, with some data describing patterns related to patient reports of discomfort. Antacids were observed in research settings as supportive treatment for symptoms in patients with established acid-related disease.

Uncertainty remains across the evidence base. Much of the data is historical and may not align with current trial standards, meaning evidence quality varies. Long-term effects are not fully established for the use of this product as a sole agent for chronic conditions. Functional studies monitored the antacid in healthy human volunteers, and some research explored use in pregnant women for heartburn. However, data for pediatric populations remain insufficient, and comparative evidence against modern standard-of-care treatments is lacking.

Key Studies & References Aluminum Hydroxide and Magnesium Hydroxide Oral Suspension Drug Information – MedlinePlus

Frequently Asked Questions (FAQ)

Common questions about Алмагель (FAQ)


Q: Can children 2 years old use it?

Official product labeling specifies that this medicine is indicated for use in pediatric patients. For symptomatic gastroesophageal reflux disease (GERD), it is approved for children aged 1 year and older. For erosive esophagitis, it is indicated for patients 1 month of age and older. Specific pediatric uses require a healthcare provider to determine the appropriate regimen.


Q: Is it safe long-term?

Regulatory documents include warnings about potential risks associated with long-term use. Using this medicine daily for a year or longer has been associated with an increased risk of bone fractures in the hip, wrist, or spine. Additionally, daily use over extended periods (e.g., longer than 3 years) may be associated with conditions such as Vitamin B-12 deficiency and, rarely, low magnesium levels (hypomagnesemia). The risk of Fundic Gland Polyps may also increase with long-term use, especially beyond one year.


Q: Does it make you sleepy?

Sleepiness or drowsiness (somnolence) has been reported as an adverse reaction in clinical studies and is listed in some official product information as an uncommon side effect. Product information includes general cautions regarding activities requiring mental alertness, such as driving or operating heavy machinery, if effects like sleepiness or dizziness occur.


Q: Can I drink alcohol while taking it?

Regulatory patient information highlights potential concerns regarding alcohol consumption alongside this medication. While there is no direct chemical interaction with alcohol, drinking alcohol can increase the amount of acid the stomach produces. This effect may counteract the medicine's action and potentially complicate the management of symptoms.


Q: How should I store this medicine?

Official storage instructions state that the medicine should be kept in its original packaging at room temperature, typically between 59 F to 86 F (15 C to 30 C). Product labeling specifies that the medication must be protected from light and moisture and stored in a cool, dry place to help maintain its intended quality.

How should Алмагель be stored and disposed of?

The storage and disposal of the Алмагель oral suspension must comply strictly with official regulatory requirements to ensure product stability.

Storage Conditions

  • Store the suspension at room temperature, generally defined as not exceeding 25 C.
  • It is mandatory to protect the medicine from freezing and excessive heat, moisture, or direct sunlight.
  • Keep the bottle tightly closed in its original container and out of the reach of children.

Stability and Disposal

The product's shelf life is defined on the package. The medicine must be discarded after the expiration date or if it has been improperly stored. Disposal of unused or expired suspension should be done safely and in accordance with applicable laws and regulations.

Do not dispose of the medicine by flushing it down the toilet or pouring it down the sink unless specifically instructed by the manufacturer or a government-mandated disposal list. Return unused or expired medicines to a pharmacy take-back program when available.

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

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