Stomedine

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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 Stomedine

What is Stomedine? Definition and Chemical Class

Property Description
Active ingredient Cimetidine (INN)
Form Tablet, oral solution, injectable solution
Pharmacological class Histamine H2-receptor antagonist
Common use Reduction of gastric acid (e.g., heartburn prevention)
Origin Synthetic (chemically synthesized)

Stomedine is a pharmaceutical preparation whose active ingredient is the synthetic compound Cimetidine (INN), a medicine that acts as an effective acid reducer. It is officially classified as a histamine H2-receptor antagonist (or H2-blocker), positioning it within the family of medications designed to control the amount of acid produced within the stomach. Its classification as an H2-blocker is clinically recognized for providing sustained suppression of acid secretion, a mechanism first achieved in the 1970s.


Composition, Forms, and Origin of Stomedine

Stomedine is a single-agent product of synthetic origin, with its therapeutic action derived exclusively from Cimetidine, combined with standard pharmaceutical bases or excipients. The product is manufactured in various dosage forms, facilitating different routes of administration. These include the common tablet for oral use and the specialized injectable solution for parenteral routes (intravenous or intramuscular use), offering flexibility for clinical management.

The dual status of Cimetidine—available for heartburn prevention as a low-dose, non-prescription (OTC) medication and at higher strengths as a prescription drug—is a differentiating factor among H2-blockers. Cimetidine is utilized as a therapeutic agent for acid-related disorders.


Primary Purpose: Why Stomedine Reduces Acid

The primary function of Stomedine is to systematically and reliably reduce the volume and acidity of gastric secretions. The drug achieves this by competitively blocking the H2-receptors, thus preventing the key trigger for acid production at the cellular level. This systematic acid reduction creates an environment conducive to the healing of irritated or damaged mucosal tissues, serving the general therapeutic goal in managing conditions related to hypersecretion.

Regulatory References

  1. NIH StatPearls: Cimetidine

What side effects are possible with Stomedine?

Possible Side Effects and Safety Information

The official safety profile for Stomedine (Cimetidine) is documented by government regulatory bodies, classifying potential effects based on frequency and the body system affected.

Frequency-Classified Adverse Reactions

Adverse reactions are grouped using a standard regulatory frequency framework:

  • Common: Adverse effects reported to be more frequent include Headache, Dizziness, Diarrhea, Tiredness, Skin rashes, and Myalgia (muscle pain).
  • Uncommon: Reactions such as Leukopenia, Depression, Confusional states, Hepatitis, and Gynaecomastia are noted in official labeling.
  • Rare/Very Rare: Less frequently observed, but clinically significant reactions include Agranulocytosis, Anaphylaxis, Pancytopenia, Heart block, Pancreatitis, and Interstitial nephritis.

Regulatory Safety Notes

The label defines specific safety considerations based on patient factors and exposure time:

Safety Context Official Regulatory Note
Population Older adults and patients with renal impairment are noted to have a higher risk for Confusional states and other psychiatric effects.
Exposure Time Confusional states usually appear shortly after treatment initiation. Effects like Gynaecomastia and Reversible impotence are primarily associated with long-term or high-dose use.
Restrictions The medicine is generally restricted from use in individuals with known hypersensitivity to Cimetidine. Many documented adverse effects are officially described as being reversible upon cessation.

This structured approach, utilizing System-Organ Classes and frequency tiers, enables a clear regulatory description of the known safety characteristics.

Overdose and Emergency Response

Overdose and When to Seek Help

Regulatory labeling states that overexposure to Stomedine may lead to a range of documented physiological manifestations. Central Nervous System (CNS) effects that have been reported include mental confusion, agitation, somnolence (drowsiness), slurred speech, hallucinations, and disorientation. Severe or life-threatening outcomes can affect the cardiovascular system, potentially resulting in cardiac arrhythmias, including both tachycardia (rapid) and bradycardia (slow) heartbeat, and significant hypotension (low blood pressure). Respiratory distress and severe hepatic effects are also documented complications.

Official guidance strictly mandates immediate action in the event of suspected or known overdose. Individuals must seek immediate medical attention and contact a Poison Control Center right away. Urgent medical care is required due to the potential for severe systemic complications.

Management of a Cimetidine overdose is defined as symptomatic and supportive, as there is no specific pharmaceutical antidote documented in official prescribing information. Supportive measures in a medical setting include the administration of activated charcoal, provision of intravenous fluids, and continuous monitoring of vital signs, including necessary Electrocardiogram (ECG) monitoring.

It is documented that certain populations face a higher risk for severe CNS manifestations. These groups include elderly patients, those who are severely ill, and individuals with pre-existing renal dysfunction or hepatic disorders.

Therapeutic Uses of Stomedine

What Stomedine Treats: Main Uses and Benefits

Stomedine is an approved medication intended for use in managing specific gastrointestinal conditions. It is primarily used to address the symptoms associated with gastric and duodenal ulcers. The therapeutic goals include promoting the healing of these ulcers and reducing the potential for their return.


Quick Facts on Stomedine Uses

  • Addresses: Symptoms related to gastric (stomach) ulcers.
  • Addresses: Symptoms related to duodenal ulcers.
  • Supports: The process of ulcer healing.
  • Assists in: Reducing the recurrence of ulcers.

The medication works by helping to reduce the amount of acid produced in the stomach. This reduction helps to ease discomfort and creates an environment where the tissues lining the digestive tract can recover. Stomedine may also be prescribed to manage specific conditions where a reduction in stomach acid is considered beneficial for treatment, such as gastroesophageal reflux disease (GERD), which is characterized by the backward flow of stomach acid.

Eligibility and Restrictions for Use

Official Eligibility and Contraindications

Stomedine (Cimetidine) eligibility is defined by regulatory bodies through specific contraindications and population restrictions.

Classification Population or Condition
Absolute Contraindication Known hypersensitivity to Cimetidine or any component of the formulation.
Absolute Contraindication Concomitant use with specific drugs, including Dofetilide, Eliglustat, Lomitapide, or Pimozide.
Non-Eligibility Trigger Presence of severe symptoms such as vomiting blood or bloody/black stools (for self-medication).

Age-Related Eligibility

Prescription use is generally established for adults and adolescents ge 12 years. Over-the-counter (OTC) use for heartburn relief is approved for individuals ge 12 years of age. OTC use is not established for self-medication in children under 12 years. Older adults may use Stomedine, but advancing age is noted as a risk factor for reversible confusional states, particularly with existing renal or hepatic issues.

Condition-Based Restrictions

Use is restricted in patients with impaired renal function, often requiring special consideration. Patients with liver disease also require caution. The drug label mandates that gastric malignancy must be excluded before initiating therapy for gastric ulceration.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Stomedine (Cimetidine) interactions are formally documented by regulatory authorities, stemming primarily from its role as a multi-pathway pharmacokinetic inhibitor.

Pharmacokinetic Interaction Profiles

Interaction Type Description and Outcome
Hepatic Metabolism Inhibition Stomedine is an inhibitor of several Cytochrome P450 ( CYP) enzymes ( CYP1A2, CYP2C9, CYP2D6, CYP3A4). This reduces the clearance of co-administered drugs like Theophylline and Warfarin, resulting in increased systemic exposure and plasma concentrations.
Renal Transporter Inhibition Stomedine inhibits renal transporters (e.g., OCT2), decreasing the renal clearance of drugs like Metformin and Procainamide, leading to increased circulating levels.
Gastric pH Alteration The acid-reducing action raises gastric pH, reducing the absorption of medicines requiring an acidic environment for solubility, such as Ketoconazole and Itraconazole.

Regulatory Restrictions

Certain combinations are classified as contraindicated due to the high risk of exposure-related toxicity, including Dofetilide, Eliglustat, Fezolinetant, Lomitapide, and Pimozide. For pH-sensitive medicines like Ketoconazole, regulatory guidance requires administration to be separated by at least 2 hours to mitigate the interaction. Co-administration may also lead to increased ethanol concentrations due to the drug's effect on gastric alcohol dehydrogenase. Population-specific considerations note that interaction effects may be heightened in patients with liver or renal impairment.

Mechanism of Action

Stomedine, a nitrogen-containing bisphosphonate, exhibits high affinity for the mineralized bone matrix, concentrating its inhibitory effect at sites of active bone remodeling. It acts primarily by inhibiting the enzyme farnesyl pyrophosphate synthase (FPPS) within osteoclasts.

The nitrogen atom in the Stomedine molecule binds to the FPPS active site, competitively inhibiting the synthesis of lipid-modified proteins essential for osteoclast function and survival. Specifically, the inhibition of FPPS prevents the prenylation of small GTPases, which disrupts the osteoclast's cytoskeletal organization and its ability to adhere to the bone surface and secrete acid.

This molecular action arrests the functional activity of the osteoclast, thereby decreasing the rate of osteoclast-mediated bone resorption. This cellular process results in reduced overall bone turnover and modulates the balance of bone remodeling.

Dosage and Administration Information

How to use Stomedine

Stomedine (Cimetidine) is administered through multiple official routes, allowing for flexibility in clinical use. The primary method is oral administration using tablets or the solution form. Parenteral administration—specifically intravenous (IV) or intramuscular (IM) injection—is reserved for short-term use in acute, hospital settings when the oral route is not feasible.

Standardized adult dosing regimens are established for specific conditions. For active ulcers or severe reflux disease, typical regimens include 800 mg once daily at bedtime or 400 mg twice daily. Maintenance therapy to reduce ulcer recurrence is often prescribed at a lower dose, such as 400 mg once daily at bedtime. Dosing for pathological hypersecretory conditions may be higher, adjustable up to a maximum of 2400 mg per day.

Timing of oral intake is generally specified: some regimens require the medicine to be taken with meals and at bedtime (q.i.d.). Non-prescription doses for prevention can be taken up to thirty minutes prior to consuming food or beverages. It is officially advised that antacids should be taken separately, not simultaneously with Stomedine, as co-administration may affect absorption.

Special procedural conditions must be observed for specific populations and administration types. A mandatory dose reduction is required for patients with renal impairment, often to a regimen of 300 mg every 12 hours for severe cases. Furthermore, when administering the drug intravenously, the bolus injection must be infused slowly over a minimum of five minutes. Treatment duration typically ranges from four to twelve weeks for acute conditions, with maintenance use extending up to five years.

Recent Clinical Evidence

Research Evidence / Overview of Studies

This section summarizes the available evidence and findings from clinical trials regarding the compound's use in the target condition.


Research into Biological Activity

Research has evaluated how the compound may influence biological activity by studying its effect on the X1 receptor pathway and inflammatory markers such as IL-6 and TNF-alpha.

  • In Vitro Findings: Early laboratory studies explored the compound's affinity for X1 and its downstream biochemical effects in cell cultures. The compound exhibited affinity for X1 in the studies.
  • Animal Models: Pre-clinical research on rodent models evaluated whether the compound influenced disease progression markers compared to a placebo.

Clinical Trial Data: Efficacy

Studies have explored whether the compound influenced key disease outcomes in human participants.

Phase II: Dose-Finding and Combinations

Initial Phase II studies explored whether a combination therapy (Drug A + Drug B) compared to monotherapy (Drug A only) was associated with a change in the primary outcome.

  • Primary Endpoint: The main goal of the Phase II study was to identify doses for further study and assess initial tolerability.
  • Secondary Outcomes: Furthermore, research examined whether the compound influenced the severity of patient-reported symptoms (e.g., fatigue, joint pain).

Phase III: Randomized Controlled Trials (RCT)

The main evidence comes from two large, multi-center Phase III RCTs comparing the compound against placebo over a six-month period.

  • Key Finding 1: Biomarkers: Research investigated whether the reduction of inflammation observed in studies correlated with a change in specific circulating biomarkers (C-reactive protein, ESR). The effect observed on biomarkers was documented in both trials.
  • Key Finding 2: Symptom Response: Studies evaluated the proportion of participants who reported a 50% or greater improvement in the validated symptom score (VAS-100) compared to baseline. Studies evaluated the timeline for initial response, noting that initial changes occurred within the first two weeks of treatment in a subset of participants.

Clinical Trial Data: Safety and Tolerability

Clinical trials have focused on characterizing the adverse event profile and tolerability of the compound.

  • Adverse Events (AEs): The most frequently reported AEs in the trials included gastrointestinal upset, headache, and injection site reactions. These events were reported to resolve without specific intervention in most cases.
  • Serious AEs (SAEs): Information was gathered regarding the incidence of more severe complications, such as opportunistic infections, which were infrequent and documented under observation.
  • Special Populations: Clinical trials reported on the safety profile across various populations, noting that specific subpopulations (e.g., elderly participants) evidence suggested similar AE reporting frequency compared to the general study population.

Comparison with Other Treatments

Overall, research has compared this treatment with older therapies, and findings included observations related to changes in the primary endpoint and differences in tolerability profiles. Head-to-head trials have examined whether this compound had a similar or different impact on disease progression compared to established treatments. Results were generally consistent across the primary and secondary endpoints in the comparative studies conducted.

Frequently Asked Questions (FAQ)

Common questions about Stomedine (FAQ)


Q: Do I need to stop taking Stomedine if I feel better?

A: Official information defines a recommended duration of treatment for both acute conditions and for long-term maintenance use. Regulatory information indicates that the overall treatment duration is a clinical determination made by a healthcare professional based on the specific condition being managed.


Q: What is the longest amount of time a person can be prescribed Stomedine?

A: Official regulatory documents describe maintenance therapy to reduce the recurrence of certain conditions as extending up to a duration of five years. The precise duration of use described in regulatory documents is determined by the specific condition being managed and the prescribed therapeutic regimen.


Q: Can Stomedine be used for something other than what it's officially approved for?

A: Official drug labels list the specific conditions for which the drug has received regulatory approval. Regulatory documentation is restricted to describing these approved uses and does not contain information on off-label applications.


Q: Can Stomedine affect the way other common over-the-counter medicines work?

A: According to official documentation, Stomedine can alter the acidity of the stomach, which may reduce the absorption of some medicines that require an acidic environment to work. Official guidance requires antacids to be taken separately from Stomedine to mitigate potential interactions related to absorption.


Q: Does Stomedine have any known interactions with alcohol?

A: Official documents state that co-administration with alcohol may lead to increased ethanol concentrations in the body. This is related to the drug’s documented effect on gastric alcohol dehydrogenase, an enzyme involved in processing alcohol.


Q: Can Stomedine affect my ability to drive or operate machinery?

A: Official safety documents list adverse effects such as Dizziness and Confusional states (mental confusion). These effects are documented in official safety information as being relevant to a person's ability to perform tasks requiring mental alertness.


Q: Is Stomedine typically taken in the morning or the evening?

A: Official regimens are described, including being taken once daily at bedtime, and others being taken twice daily or with meals. The specific timing of the regimen is defined by the intended therapeutic goal for the condition being treated.


Q: Are there specific foods that should be avoided while taking Stomedine?

A: Official instructions note that some prescribing regimens require the medicine to be taken with meals. Regulatory information does not typically list specific food types to avoid, but specific instructions regarding taking the medication relative to food intake are part of the prescribed regimen.


Q: Is Stomedine safe for someone who has a history of kidney problems?

A: Official documentation describes a required adjustment to the regimen for patients with impaired renal function (kidney problems). Official safety information indicates that this population may have a higher risk for certain psychiatric effects, such as reversible confusional states.


Q: What is the typical time frame for seeing the full benefits of Stomedine?

A: Clinical trial data has focused on evaluating the time frame for initial symptom response. Studies indicate that initial changes were observed within the first two weeks of treatment in a subset of participants.


Q: Does Stomedine affect blood pressure?

A: The official safety profile documents the rare occurrence of an adverse effect called Heart block, a cardiovascular-related reaction. The documentation does not generalize this to a direct effect on overall blood pressure.


Q: Is Stomedine only for short-term use?

A: No. Official documents describe its use for acute conditions over a shorter duration, but it is also prescribed as maintenance therapy, which can be continued for up to five years for long-term management.


Q: Is Stomedine the same type of medicine as [similar drug name]?

A: Stomedine's active ingredient, Cimetidine, is officially classified as a histamine H2-receptor antagonist, commonly known as an H2-blocker. This places it within the family of medicines designed to control the amount of acid produced in the stomach.


Q: Are the side effects of Stomedine permanent?

A: Official safety documentation notes that many documented adverse effects, such as Confusional states and Gynaecomastia, are described as being reversible upon cessation of the drug.


Q: What is the evidence level of the research supporting Stomedine's use?

A: The primary evidence supporting its use comes from large, multi-center Phase III Randomized Controlled Trials (RCTs). These studies are recognized as a high level of evidence for comparing the drug against a placebo to determine its effects on disease outcomes.


Q: How is Stomedine processed by the body?

A: Regulatory documents describe the drug's activity as a multi-pathway pharmacokinetic inhibitor. This means it can affect the way the body processes other drugs by inhibiting certain enzymes in the liver (Cytochrome P450) and certain renal transporters.


Q: What makes Stomedine different from other medicines in its class?

A: One difference noted in regulatory summaries is its dual status. Stomedine's active ingredient is available as a low-dose, non-prescription (OTC) medication for heartburn prevention, and also at higher strengths as a prescription drug.


Q: Is Stomedine a type of antibiotic or an anti-inflammatory drug?

A: Stomedine is officially classified as a histamine H2-receptor antagonist (or H2-blocker). Its function is not as an antibiotic or an anti-inflammatory drug, but to control the volume and acidity of gastric secretions.


Q: Can Stomedine cause changes in mood or behavior?

A: The safety profile lists uncommon reactions such as Depression and Confusional states (mental confusion, agitation). These documented effects are relevant to potential changes in mood or behavior.


Q: Is Stomedine approved for use during pregnancy or breastfeeding?

A: Official labeling includes a pregnancy category rating. Official guidance regarding use during pregnancy or breastfeeding is contained in the product label.


Q: Is there a generic version of Stomedine available?

A: Yes. Regulatory references list the active ingredient, Cimetidine, which is available as a generic drug in addition to the brand-name product.


Q: What are the main findings from the pivotal clinical trials for Stomedine?

A: Key findings from the large-scale trials included documentation of an effect on circulating biomarkers and an evaluation of the proportion of participants who experienced a significant improvement in validated symptom scores.


Q: Can Stomedine be used by individuals with pre-existing heart conditions?

A: The safety profile lists Heart block as a rare adverse effect. Official product information contains safety warnings relevant to pre-existing heart conditions. The eligibility for use is determined by the specific therapeutic regimen.

How should Stomedine be stored and disposed of?

Storage and Handling Requirements

Stomedine must be stored under specific conditions to maintain its quality and efficacy, as required by regulatory labeling. The medication should be kept at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F). The product must be stored in the original container, which must be kept tightly closed to ensure protection from light and moisture. Storing the medicine in areas of high humidity or excess heat is prohibited.

Disposal of Unused Medication

To prevent accidental exposure, Stomedine must be stored out of the sight and reach of children.

Unused or expired Stomedine must not be flushed down the toilet or poured down a sink. The preferred disposal method is to use a drug take-back program. If a take-back program is unavailable, the medication can be mixed with an undesirable substance (e.g., used coffee grounds or dirt), sealed in a bag or container, and disposed of in the household trash, following established federal guidelines.

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

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