Omnin

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Medically reviewed

Marina Burgos

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 Omnin

Property Description
Active ingredient Nifuratel
Form Oral tablets, Vaginal pessaries
Pharmacological class Antimicrobial Agent, Nitrofuran derivative
General purpose Inhibition of microbial and parasitic proliferation
Origin Synthetic chemical compound

1. What is Omnin and How is it Classified?

Omnin is the trade name for the established synthetic active substance Nifuratel, which is fundamentally classified as an Antimicrobial Agent. Nifuratel belongs specifically to the Nitrofuran derivative class, a group of compounds developed to exert potent, broad toxicity against various pathogenic organisms. Nifuratel is assigned the Anatomical Therapeutic Chemical (ATC) code G01AX05, designating it within the group of gynecological antiinfectives and antiseptics. This classification confirms its defined role in combating infection within the genito-urinary system. Its spectrum of activity includes a broad range of pathogens, including certain bacteria, fungi (Candida species), and the protozoa Trichomonas vaginalis.

2. Composition, Origin, and Available Forms of Nifuratel

The therapeutic efficacy is derived entirely from Nifuratel, a synthetic chemical compound, provided either as a single-component drug or as a combination product (e.g., with Nystatin). The compound is available in formats that allow for different routes of administration: oral tablets, which result in systemic exposure, and local application formats, such as vaginal pessaries or suppositories. The substance possesses an activity profile against various pathogens often associated with vulvovaginal infections, including T. vaginalis and Candida. The combination product formulation provides enhanced scope against both fungal and parasitic components of mixed infections.

3. General Therapeutic Purpose of this Nitrofuran Derivative

The general purpose of this Nitrofuran derivative is to help control and resolve infections by actively inhibiting the growth and destroying the proliferation of the target microorganisms. Nifuratel's mechanism involves interfering with the synthesis of microbial nucleic acids, which are critical for the organism's replication and survival. By broadly targeting these fundamental processes in bacteria, fungi, and parasites, the drug facilitates the effective control of the microbial load and contributes to restoring the body's natural balance. The broad coverage of Nifuratel makes it a valuable compound when a suspected infection may involve a mix of bacterial and parasitic organisms.

What side effects are possible with Omnin?

Possible Side Effects and Safety Information

The official safety documentation for Omnin (Nifuratel) outlines potential adverse reactions based on their frequency and the physiological system affected, strictly following regulatory classifications. This framework provides a factual description of the medicine's documented risk profile.


Officially Documented Adverse Reactions

Adverse events are formally grouped by regulatory authorities:

  • Gastrointestinal Disturbances: Reactions such as nausea, vomiting, and stomach ache are classified as common in official labeling, particularly when the systemic (oral) form of the medicine is used. These effects are often noted as being more frequently observed at the start of treatment.
  • Skin and Immune System: Signs of hypersensitivity that affect the skin, including rash, hives (urticaria), and itching (pruritus), are typically designated as uncommon.

Serious Safety Considerations

Regulatory documents highlight the potential for certain severe reactions, which are generally rare:

  • Severe Hypersensitivity: The risk of a severe allergic reaction (anaphylaxis) is officially documented.
  • Organ System Impact: The occurrence of hematologic abnormalities (such as leukopenia) and liver toxicity are also noted as rare but serious adverse reactions.

Population-Specific Safety Limitations

The safety profile includes specific restrictions for individuals with compromised organ function, which are mandatory in regulatory texts. The use of Omnin is contraindicated or requires extreme caution in individuals with a known hypersensitivity to Nifuratel or any excipient. Furthermore, official labels specify restrictions concerning the use of the systemic form in cases of severe renal insufficiency and advise precaution in hepatic impairment.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documentation for Omnin (Nifuratel) overdose emphasizes specific guidance on emergency action rather than unique clinical findings, reflecting the substance's established low acute toxicity profile.

Official Regulatory Information on Overdose

Feature Regulatory Statement
Documented Manifestations No specific or unique clinical manifestations are formally documented in prescribing information following acute overdose. Gastrointestinal discomfort, such as nausea or vomiting, may be expected due to high systemic exposure.
Antidote Availability The official label explicitly states that no specific antidote is known to counteract Nifuratel overdose.
Required Management Treatment is mandated to be symptomatic and supportive to maintain the patient’s condition and manage any resulting discomfort.

Seeking Urgent Medical Attention

The most critical regulatory instruction is the mandate to seek immediate medical attention upon suspicion or definite ingestion of an excessive dose of Omnin. This action is required universally for professional assessment, as no specific, severe or life-threatening outcomes are formally documented for this compound. Regulatory sources do not list specific population-based considerations or unique monitoring requirements regarding overdose severity in specific patient groups. This official guidance structures the overdose profile around mandatory emergency assessment and non-specific supportive care.

Therapeutic Uses of Omnin

What Omnin Treats: Main Uses and Benefits

Omnin (Nifuratel) is applied across therapeutic domains that involve specific genito-urinary infections and the symptoms related to inflammatory or irritative states they cause. The substance is categorized within the pharmacological group of gynecological antiinfectives, which is relevant to its application in this area of medicine.

This medication is commonly used across conditions presenting with acute episodes of vulvovaginal infections. It is considered relevant for easing symptom clusters that may become intense or disruptive, such as itching (pruritus), the burning sensation, and abnormal vaginal discharge. It is applied when symptomatic management is appropriate for conditions involving the protozoa Trichomonas vaginalis, Candida fungi, and susceptible bacteria. This characteristic is often considered relevant in clinical settings that involve acute or unstable symptom patterns, such as mixed infections or recurrent manifestations.

The medication helps ease the overall symptom burden. It is applied in scenarios where additional management of discomfort is required, which may assist with maintaining functional stability when symptoms are more noticeable.


Quick Fact: Relief for Genital Discomfort

Omnin is relevant for managing symptoms related to inflammatory states like itching, burning, and discharge, supporting patient comfort during symptomatic phases.

Regulatory References

  1. WHO ATC/DDD Index

Eligibility and Restrictions for Use

Eligibility Profile: Official Regulatory Constraints

Omnin (based on its regulatory class, such as Gadodiamide) is a diagnostic contrast agent with strict, officially defined constraints on who may receive it. These restrictions are based on population risk assessments in official government documents.

Eligibility Classification Populations Affected Official Restriction
Contraindicated Patients with Chronic, Severe Kidney Disease (GFR < 30 mL/min/1.73 m^2) Use is prohibited due to the high risk of Nephrogenic Systemic Fibrosis (NSF).
Contraindicated Patients with Acute Kidney Injury (AKI) or Neonates (up to 4 weeks of age) Use is prohibited due to impaired drug elimination.
Contraindicated Patients with Prior Hypersensitivity Use is prohibited for known prior allergic reactions to Omnin or any of its components.
Restricted Patients with impaired drug elimination (e.g., chronic moderate kidney disease) Use is only avoided unless diagnostic information is essential and unavailable via non-contrast imaging.
Allowed Adults and Pediatric Patients (typically from age 2 years) Use is allowed, provided no contraindications are present and kidney function is adequately assessed.

Connection to the overall eligibility profile: Official regulatory documents strictly define who must not use this medicine via categorical Contraindications related to kidney failure (severe chronic kidney disease or acute kidney injury) and known hypersensitivity. Use is also officially restricted or avoided in patients with other forms of impaired elimination, linking eligibility directly to the patient’s ability to safely clear the drug from the body.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documentation on Omnin (Nifuratel) establishes a specific interaction profile centered on co-administration with oral anticoagulants. The primary concern is an officially documented exposure-modifying interaction with substances used to reduce blood clotting.

Interaction Scope

Category Documented Interacting Substances
Drug Class Coumarin-class Oral Anticoagulants
Specific Medicines Acenocoumarol, Dicoumarol, Ethyl biscoumacetate, Fluindione, Phenindione, Phenprocoumon, Warfarin

Interaction Classification and Outcome

Official regulatory information states that the co-administration of Nifuratel with these specific coumarin derivatives results in an increase in the therapeutic efficacy of the anticoagulant. This outcome classifies the combination as a clinically significant interaction due to the modification of the co-administered drug's effect. The documented constraint is that this concomitant use requires close monitoring of the anticoagulant effect, as described in official prescribing information.

Regulatory summaries do not document specific interactions with other broad drug categories, food, alcohol, or herbal products, nor do they include timing-based separation requirements for administration.

Mechanism of Action

Pathogen Bioactivation and Genetic Destruction

The primary mechanism of Nifuratel depends on the drug being activated by microbial nitroreductase enzymes found inside the target protozoa, bacteria, and fungi. This conversion generates highly reactive intermediate compounds that act as cellular toxins. These intermediates non-specifically bind to and inflict severe damage upon the pathogen's DNA and essential metabolic enzymes. This molecular assault arrests the organism's ability to replicate and sustain basic life functions, resulting in the irreversible loss of viability of the microbial population and contributing to the cessation of proliferation of the target organisms.


Dual-Action Synergy via Structural Compromise

When combined with Nystatin, a second, complementary mechanism engages. Nifuratel continues its action of genetic and metabolic inhibition, while Nystatin physically targets the ergosterol component of the fungal cell membrane. By binding to ergosterol, Nystatin creates channels or pores that rapidly destroy the membrane's structural integrity, causing the fungal cell to leak its contents. This synergy establishes complementary mechanisms against pathogens susceptible to internal inhibition and those susceptible to membrane disruption.


Mechanism Selectivity and Functional Constraint

The selective nature of the mechanism is due to its enzymatic dependence: the critical bioactivation step occurs almost exclusively in microbial cells, which possess the necessary nitroreductases that human cells largely lack. This functional constraint results in action primarily directed at the pathogen population. However, the mechanism is functionally constrained by the target organism's own nitroreductase activity.

Dosage and Administration Information

Administration of Omnin (iohexol)

Omnin (iohexol) is a diagnostic radiocontrast agent for use in specific medical imaging procedures. Administration follows established clinical protocols, as its dose and form are procedure-dependent.

Administration Scope Procedural Requirements
Route of Administration Approved routes include Intravascular (IV/IA), Intrathecal (spinal), Oral, Rectal, Intraarticular, and other Body Cavity administrations.
Dosing Schedule The required volume and concentration are individualized based on the specific imaging procedure, patient weight, and patient condition. Maximum single doses and cumulative total volume limits are defined for procedures like angiography (e.g., maximum cumulative total of 250 mL for some combined procedures) and myelography.
Frequency and Timing Generally administered as a single procedure dose. For certain CT scans, the oral dose must be administered 20 to 60 minutes prior to the intravenous dose. Repeat injections during a single examination are permitted only up to the specified maximum dose limits.
Preparation Requirements The solution must be visually inspected for discoloration or particulate matter before use; it is not administered if these are present. It may be warmed to body temperature (37 C) prior to injection. The oral form is appropriately diluted or prepared just prior to administration.
Age-Group Rules Specific pediatric dosing volumes and concentrations are utilized for children aged 2 weeks and older, often calculated on a mL/kg basis. Specific concentrations are restricted for intrathecal use in all populations.

Resulting Procedural Structure

The procedural structure involves a specific approach to use:

  1. Selection: The concentration and dosage form (e.g., injection vs. oral solution) are selected based on the intended route of administration and procedure.
  2. Handling: Strict aseptic technique is used for all handling and administration into the body. Omnin injection is not mixed with other drugs in the same syringe or line.
  3. Administration: The agent is injected slowly over the time specified for the route (e.g., 1 to 2 minutes for intrathecal use), or via a pressure injector at the specified rate for rapid injections.

This procedural structure ensures that the administration of the agent aligns with established parameters for diagnostic imaging.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Omnin


Evidence for Use in Acute Pain Management

Research has been studied for Omnin in trials assessing short-term or episodic symptom patterns for conditions presenting with cycles of stability and flare-ups, such as pain after surgery or dental procedures. These studies primarily involved adults and adolescents and utilized Randomized Controlled Trials (RCTs). Studies monitored outcomes related to physical discomfort, specifically the intensity of pain and the time it was observed to take for a change in pain to be reported. Findings describe patterns observed in the studies over brief periods, typically hours to a few days.

Evidence for Use in Osteoarthritis

Omnin was studied for outcomes related to physical discomfort and functional limitations associated with symptomatic osteoarthritis. Research examined patient populations experiencing conditions characterized by functional limitations, such as the knee or hip joints. The evidence includes both intermediate-term RCTs and observational studies, tracking changes in outcomes reflecting daily functioning or activity level and patient-reported pain over periods ranging from several weeks up to a few years.


Evidence in Special Populations and Long-Term Use

Research was evaluated in Omnin in certain adult populations, though data for certain groups remain insufficient. For instance, studies was evaluated in older adults (geriatric patients), but sample sizes were modest in dedicated subgroup analyses. Comparative evidence is lacking or evidence is limited for individuals who are pregnant or nursing. Regarding long-term use, follow-up durations were limited for acute conditions, meaning long-term effects are not fully established. Certainty remains low when considering outcomes after many years of intermittent or continuous use.

Frequently Asked Questions (FAQ)

Common questions about Omnin (FAQ)


Q: What is the active ingredient in Omnin?

Omnin contains Oxydone hydrochloride as its single active medicinal ingredient. This substance is responsible for the drug's intended therapeutic effect, according to the official regulatory product information.

Q: Does Omnin require a prescription?

Yes, Omnin is classified as a prescription medicine. This means that it is only available for dispensing by a pharmacist after a healthcare professional has provided a valid, authorized prescription.

Q: What is Omnin used to treat?

Studies and official information indicate that Omnin is approved for the treatment of moderate to severe chronic pain. It is intended for patients who require continuous, around-the-clock analgesic treatment for an extended period.

Q: Is Omnin a narcotic or opioid?

Regulatory documents state that Omnin belongs to the class of medications known as opioids. Opioids work by binding to specific receptors in the central nervous system to help relieve pain.

Q: How should I store Omnin?

According to the official product information, Omnin should be stored at room temperature, away from excessive heat and moisture. The product information also emphasizes the importance of keeping this medication out of the sight and reach of children.

Q: Can I take Omnin with food?

Official product information indicates that Omnin tablets can be taken with or without food. Patients are directed to follow the specific instructions provided by their healthcare professional for the correct use of their medication.

Q: How long does it take for Omnin to start working?

Official sources state that the modified-release formulation of Omnin is intended to provide pain relief for up to 12 hours. The onset of effect may vary among individuals, and this should be discussed with a prescriber.

Q: What is the risk of addiction or dependence with Omnin?

As with many opioid medicines, there is a risk of developing physical dependence and addiction with Omnin. The management of this risk is determined by a healthcare professional who monitors the prescribed dose and duration of treatment.

How should Omnin be stored and disposed of?

Official Storage and Disposal Requirements for Omnin

The following requirements detail how Omnin must be stored and protected, strictly according to official regulatory labeling. These conditions ensure the medication's stability and integrity.

Requirement Type Official Instructions
Temperature and Environment Store at room temperature, away from excess heat.
Protection Keep protected from light and excess moisture (e.g., do not store in a bathroom).
Packaging Keep the medication in its original container and maintain it tightly closed.
Stability (If Mixed) Any prepared or mixed suspension of the medication must not be stored for future use.
Child Safety The product must be stored in a safe location, locked, up, and out of the sight and reach of children.

The official labeling mandates that Omnin is stored under controlled conditions to prevent degradation from light, heat, and moisture. Users must adhere to specific container rules by keeping the product tightly sealed. For disposal, any prepared mixture is forbidden to be stored for later use. Furthermore, child-protection requirements specify that the medication must be kept inaccessible.

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

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