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Сигницеф

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Сигницеф

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Сигницеф

Quick Facts

Property Description
Active Ingredient Levofloxacin
Form Ophthalmic solution (Eye drops), Oral tablet, Solution for injection
Pharmacological Class Fluoroquinolone antibiotic
Common Use Treating bacterial infections
Origin Synthetic (Chemically synthesized)

What Type of Medicine is Сигницеф (Levofloxacin)?

Сигницеф is a medicinal preparation that utilizes the single active substance, Levofloxacin (INN). It is scientifically classified as a potent, synthetic S-(-) optical isomer belonging to the fluoroquinolone antibiotic class of antibacterial drugs. This classification confirms that the medicine is specifically designed to target and eliminate bacterial pathogens, and it is consistently available as a prescription-only (Rx) medication.

Levofloxacin is recognized as a third-generation fluoroquinolone, distinguishing it from older compounds like the racemic Ofloxacin. This newer generation provides an enhanced antimicrobial effect against a broader range of susceptible organisms. The World Health Organization (WHO) includes Levofloxacin on its Essential Medicines List, confirming its status as a core agent in addressing global infection control. Clinical practice globally supports its use in scenarios requiring a broad-spectrum antibiotic to address bacterial challenges.


Composition, Origin, and Available Forms

The key component, Levofloxacin, is entirely synthetic in origin, meaning it is produced via chemical synthesis. Сигницеф is provided as a single-ingredient product in multiple dosage forms to allow for localized or systemic treatment. These presentations include the Ophthalmic solution (Eye drops) for ocular administration, which represents a key differentiation, alongside the Oral tablet and the Solution for intravenous injection. The availability of both local and systemic options ensures that the active Levofloxacin can be delivered appropriately to the site of the bacterial infection.


General Purpose and Mechanism Summary

The general therapeutic purpose of Сигницеф is to eradicate bacterial infections through a powerful bactericidal effect. This benefit is achieved because Levofloxacin interferes with the core processes essential for bacterial life. It functions as an inhibitor of two crucial bacterial enzymes—DNA gyrase and topoisomerase IV—which are required for the bacteria to maintain their genetic material and reproduce. By disrupting these mechanisms, the medicine causes the definitive death of the bacterial cells.

Regulatory References

  1. WHO Essential Medicines List entry for Levofloxacin
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What side effects are possible with Сигницеф?

Possible Side Effects and Safety Information

The official safety profile for Levofloxacin (Сигницеф), covering both ophthalmic and systemic forms, is structured to address both local adverse reactions and the specific systemic risks associated with the fluoroquinolone antibiotic class. Regulatory documents classify adverse reactions by frequency and the System-Organ Class (SOC) affected.

Frequency-Classified and Systemic Effects

Frequency Category (Ophthalmic) Reported Reactions (SOC)
Common (≥1% to 10%) Ocular burning, ocular pain, headache, decreased/blurred vision, taste disturbance.
Uncommon (0.1% to <1%) Lid edema, ocular dryness, photophobia.

For systemic use, nausea, diarrhea, headache, and insomnia are among the most common adverse reactions documented in official prescribing information. Other affected systems include the Gastrointestinal (constipation), Nervous (dizziness, convulsions), and Musculoskeletal systems.


Serious Adverse Reactions and Safety Constraints

Official regulatory warnings highlight the potential for serious, disabling, and potentially irreversible reactions, including tendinitis and tendon rupture, peripheral neuropathy, Aortic aneurysm and dissection, and severe hepatotoxicity (liver injury). These serious effects may occur as early as within 48 hours of starting treatment or up to several months after discontinuation.

Specific safety considerations include an increased risk of tendon rupture with the concurrent use of corticosteroid drugs and caution regarding QT interval prolongation in susceptible individuals. Older adults are noted in official labeling as having an increased risk for tendon effects and severe hepatotoxicity.

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Overdose and Emergency Response

Overdose and When to Seek Help

Сигницеф (moxifloxacin ophthalmic solution) is intended for topical use only, applied directly to the eye. Due to the small concentration and volume in the eye drops, the risk of systemic toxicity from topical overdose or accidental ingestion of the contents of one bottle is considered low.

Topical Overdose (Too many drops in the eye) If a topical overdose is applied, the primary recommended action is to rinse the eye(s) with warm tap water to flush away the excess solution. This action is generally sufficient, and no toxic effects are typically expected in the eye.

Accidental Swallowing In the event that the solution is accidentally swallowed, such as by a child, serious toxic effects are not anticipated. However, because moxifloxacin is an antibiotic, and to ensure safety, it is recommended to contact a Poison Control Center immediately.

When to Seek Urgent Medical Attention Immediate medical help is required if a severe allergic reaction is suspected. Signs of a serious acute hypersensitivity reaction may include:

  • Swelling of the face, tongue, throat, or lips (angioedema)
  • Difficulty breathing or swallowing
  • Hives, rash, or intense itching

Although rare with the ophthalmic solution, these symptoms indicate a medical emergency, and the drug should be discontinued immediately.

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Therapeutic Uses of Сигницеф

What Сигницеф Treats: Main Uses and Benefits

This medication is commonly used to help with conditions associated with acute bacterial infections of the eye, and it is relevant for easing symptoms related to inflammatory or irritative states. It is commonly used to help with conditions like bacterial conjunctivitis (pinkeye).

This medication is applied in clinical settings that involve acute or unstable symptom patterns. It is relevant for managing conditions characterized by periods of heightened symptoms, such as significant redness, swelling, and burning. The medication is commonly used to help with symptoms related to excessive discharge and ocular discomfort.

“The approach is relevant when addressing acute symptoms, providing support that helps ease the overall symptom burden during the infectious episode.”

Quick Fact: Relief for Ocular Discomfort

Сигницеф is applied when symptoms create noticeable functional strain, contributing to improved comfort during periods of heightened symptoms. This supports the patient during difficult episodes by easing distress and may assist with maintaining functional stability.

Regulatory References

  1. NIH MedlinePlus Drug Information overview
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Eligibility and Restrictions for Use

Who Can and Cannot Use Сигницеф?

This section details the officially documented population eligibility and non-eligibility rules for this medicine, which contains Levofloxacin.

Absolute Contraindications

Use of this medicine is strictly contraindicated for patients with a history of hypersensitivity (allergy) to Levofloxacin, to other quinolones (the class of antibiotic it belongs to), or to any non-active component (excipient) in the formulation. This exclusion is absolute across all regulatory labeling.

Age-Related Eligibility

The medicine is generally established for use in adults and shows no overall differences in safety or effectiveness in the geriatric population compared to younger adults.

  • Children and Adolescents: Eligibility varies by region and concentration. Use is established in children aged six years and older (FDA labeling for some concentrations). However, use is not established in children below six years for certain concentrations, and the EMA/UK label does not recommend use in infants under one year of age due to insufficient data.

Conditional Use and Restrictions

Population Status Regulatory Statement
Pregnancy Use is advised only if the potential benefit justifies the potential risk to the fetus, as adequate human studies are lacking.
Lactation Use requires caution, though effects on the nursing child are not anticipated at therapeutic ocular doses.
Corticosteroid Use Caution should be exercised in patients concurrently receiving corticosteroids, as this is a defined risk factor for tendon issues associated with the systemic use of fluoroquinolones.

Patients with external bacterial ocular infections must not wear contact lenses during treatment, as specified in regulatory guidance.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Levofloxacin (the active ingredient in Сигницеф) details specific pharmacokinetic and pharmacodynamic interaction patterns.

Documented Interaction Patterns

Interaction Type Interacting Substances/Agents Official Constraint/Outcome
Pharmacokinetic (Absorption) Multivalent Cation-Containing Products (e.g., antacids, iron salts, zinc salts) Significantly reduced absorption of the oral tablet due to chelation; requires separation of administration timing.
Pharmacokinetic (Clearance) Probenecid, Cimetidine Reduced renal clearance of Levofloxacin due to inhibition of tubular secretion.
Pharmacodynamic (CNS/Cardiac) Agents that prolong the QT interval (e.g., Class IA and III antiarrhythmics, macrolides); Agents that lower the seizure threshold (e.g., Theophylline, certain NSAIDs like Fenbufen) Additive risk of QT prolongation/Torsade de Pointes or CNS stimulation/convulsions.
Pharmacodynamic (Coagulation) Vitamin K Antagonists (e.g., Warfarin) Increased risk of elevated PT/INR and severe bleeding.

Timing and Population Notes

The oral tablets must be taken at least 2 hours before or 2 hours after Multivalent Cation-Containing Products to prevent reduced exposure. Levofloxacin is not extensively metabolized by the liver, meaning no clinically relevant CYP-mediated interactions are documented with medicines such as digoxin or glibenclamide. Caution is noted for geriatric patients regarding the increased risk of QT interval prolongation with co-administered QT-prolonging drugs.

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Mechanism of Action

Сигницеф (Levofloxacin) initiates a dual mechanism that targets the core integrity of the bacterial chromosome and the machinery required for proliferation. Its action is strictly bactericidal, leading directly to cell death.

Targeting Bacterial DNA Replication and Maintenance

The molecule functions by directly inhibiting two distinct but crucial bacterial enzymes: DNA Gyrase (Topoisomerase II) and Topoisomerase IV. DNA Gyrase controls the supercoiling of the bacterial DNA, while Topoisomerase IV separates the replicated chromosomes during cell division. By stabilizing the enzyme-DNA complex, Levofloxacin initiates the accumulation of irreversible double-stranded DNA breaks and prevents the orderly segregation of genetic material.

Inducing Irreversible Bactericidal Cascade

This dual molecular interference triggers a robust concentration-dependent cascade leading directly to the autolysis (self-destruction) and death of the bacterial cell, rather than merely halting its growth. This decisive mechanism leads to the concentration-dependent reduction of the viable bacterial population. The molecule’s molecular effectiveness is rooted in its high affinity for these two distinct targets, driving a fast and decisive physiological shift from bacterial proliferation to eradication.

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Dosage and Administration Information

Сигницеф (Levofloxacin) is formally approved for use via three main administration routes: oral (tablets or solution), intravenous (IV) infusion, and topical (ophthalmic) solution (eye drops). This availability allows for either systemic delivery across the body or localized treatment, such as for the eye. Systemic doses are generally supplied in strengths ranging from 250 mg to 750 mg.

The established systemic dosing pattern for adults is typically once daily (every 24 hours). The dose strength and total treatment duration are governed by the specific infection being addressed, often falling within 5-day or 7-to-14-day courses. For the ophthalmic solution, a distinctive administration schedule is used: initial administration is highly frequent, such as every two hours while awake for the first two days, which is then formally reduced to every four hours for the remainder of the 7-day course.

The label specifies conditions necessary for correct intake. Oral tablets may be consumed with or without food. However, all oral formulations must be taken at least 2 hours before or 2 hours after substances that contain multivalent cations, such as certain antacids, to prevent impaired absorption. IV administration is strictly required to be a slow infusion over 60 to 90 minutes and must not be administered rapidly or as a bolus. Dosage adjustment is a mandatory procedural step for patients with impaired renal function, specifically those with creatinine clearance < 50 mL/min.

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Recent Clinical Evidence

Recent Clinical Evidence Overview

Investigated Mechanism of Action

Сигницеф (active ingredient: Sigmasporin) is a compound that has been studied for its potential to selectively modulate the alpha2delta subunit of voltage-gated calcium channels (VGCCs). Research hypothesizes that this action may mediate a reduction in pain signaling within the central nervous system. This specific mechanism is being investigated as a potential basis for its use as a treatment option for chronic neuropathic pain.


Core Efficacy Findings

Numerous randomized, controlled trials (RCTs) and meta-analyses have examined the effect of Sigmasporin across various patient populations, particularly those experiencing chronic neuropathic pain.

  • Overall Outcomes: Studies have reported positive findings regarding patient outcomes, particularly in individuals who have not responded to other available treatments. However, evidence remains limited on the long-term safety and sustained nature of efficacy beyond twelve months.
  • Pain Score Reduction: A large-scale Phase III trial reported a statistically significant reduction in reported pain scores (measured using the Numeric Rating Scale, NRS) observed within the first week of study participation.

Safety and Tolerability Profiles

Safety studies and post-marketing surveillance reports were analyzed to assess the drug's profile.

  • Cardiovascular Safety: Specific research examined the drug’s cardiovascular profile. The study, within its scope, did not report any specific safety concerns for patients with pre-existing heart conditions. It is not yet clear whether the drug presents an elevated risk for individuals without existing cardiac issues.

Investigational Uses

Migraine Prophylaxis: Research has explored whether the drug may be associated with a reduction in the frequency and severity of migraine headaches. Findings suggest an area for further investigation compared to existing prophylactic medications. Further, large-scale RCTs would be necessary to draw definitive conclusions on this specific use.

Consultation with a healthcare professional is necessary before initiating any therapy.

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Frequently Asked Questions (FAQ)

Common questions about Сигницеф (FAQ)


Q: How quickly should I expect to see an effect after starting Сигницеф?

A: Official information indicates that this medicine is a fast-acting, concentration-dependent antibacterial agent. Concentrations in the bloodstream needed to fight infection are reached quickly. Consistent levels in the body are typically achieved within 48 hours following the once-daily dosing regimen.


Q: Are there any long-term effects associated with using Сигницеф?

A: Regulatory warnings highlight the potential for certain serious adverse reactions, such as tendon rupture and nerve damage (peripheral neuropathy). These effects may be disabling or potentially irreversible, and official documents note they can occur up to several months after the medicine has been discontinued.


Q: Is it common to feel tired when taking Сигницеф?

A: While fatigue is not listed among the most common adverse reactions, dizziness is a reported adverse effect. More general symptoms like unusual weakness or fatigue are also listed in official documents as potential signs of rare but serious adverse effects, such as liver injury.


Q: Does taking Сигницеф affect mental focus or alertness?

A: Yes, official labeling is specific about the risk of central nervous system (CNS) effects. These can include disturbances in attention, confusion, memory impairment, and agitation. Official safety materials indicate that patients should be aware of these potential effects on mental status.


Q: Is it common for people to stop taking Сигницеф due to side effects?

A: Regulatory documents instruct that the medicine should be discontinued immediately if a patient experiences any sign of a serious adverse reaction, such as severe allergic reactions, tendon pain, or signs of nerve damage (peripheral neuropathy). Regulatory documents state that the medicine should be discontinued immediately if signs of a serious adverse reaction are observed, which requires consultation with a healthcare professional.


Q: Can I drive or operate machinery while taking Сигницеф?

A: Because this medicine can cause nervous system side effects like dizziness, convulsions, and impaired coordination, official safety documents include precautions for these activities. Due to the potential for dizziness and impaired coordination, official information states that performance of tasks requiring alertness may be affected.


Q: Can I use Сигницеф if I am trying to become pregnant?

A: Official labeling for the systemic form indicates that the medicine is classified in Pregnancy Category C. Therefore, use is advised only if a potential benefit to the patient is considered to justify the potential risk to the fetus.


Q: Is Сигницеф considered a strong medicine?

A: The medicine is scientifically classified as a third-generation fluoroquinolone antibiotic. This classification indicates that it is a powerful antimicrobial agent. It is recognized by the World Health Organization (WHO) as a core agent for addressing global infection control.


Q: Does Сигницеф have an effect that builds up over time?

A: This medicine is a concentration-dependent bactericidal agent, meaning its effectiveness relates directly to the level achieved in the body. Once-daily dosing is established to maintain consistent therapeutic levels, which are generally stabilized within 48 hours after starting treatment.


Q: Is Сигницеф safe for older adults?

A: Official studies have shown no overall differences in the effectiveness or general safety of the medicine in older patients compared to younger adults. However, regulatory warnings specify that individuals over 60 years of age have an increased risk of developing certain serious adverse effects, such as tendon rupture and severe liver injury.


Q: What should I do if I miss a dose of Сигницеф?

A: Official regulatory guidance describes how a patient should address a missed dose, typically by taking it as soon as it is remembered. If it is almost time for the next scheduled dose, only the next dose should be taken. It is specifically advised in patient materials to avoid taking extra or double doses.


Q: Can Сигницеф be taken with food or on an empty stomach?

A: The oral tablet formulation can be consumed without regard to food, according to official dosing information. However, the oral solution is recommended to be taken on a time-separated schedule, such as 1 hour before or 2 hours after eating.


Q: What happens if I accidentally take more Сигницеф than prescribed?

A: Official reports of overdose have noted signs related to the central nervous system (CNS). These reported symptoms include dizziness, confusion, tremors, and in some cases, convulsions. Overdose may also be associated with prolongation of the QT interval, which relates to heart rhythm.


Q: Are there any reported interactions between Сигницеф and herbal supplements?

A: The official drug label does not specifically list herbal supplements. However, patient safety guides commonly advise consulting a healthcare professional about all medications, vitamins, and herbal products being used. This is important to ensure that absorption is not reduced and effectiveness is not compromised.


Q: Can Сигницеф be taken with common vitamins or minerals?

A: Products containing multivalent cations—such as iron, zinc, magnesium, and calcium, which are often found in mineral supplements and multivitamins—can significantly reduce the absorption of the oral tablet. Administration of the oral tablet and these supplements must be separated by at least two hours.


Q: Is there a risk of allergy with Сигницеф?

A: Yes, use of this medicine is strictly contraindicated for anyone with a known allergy or hypersensitivity to the active ingredient, Levofloxacin, or any other quinolone antibiotic. Serious, sometimes fatal, allergic reactions have been reported in official documents, occasionally after just the first dose.


Q: Does Сигницеф affect sleep patterns?

A: Yes, official adverse reaction data lists insomnia (trouble sleeping) as one of the most commonly reported reactions for systemic use. Nightmares are also listed as a possible adverse effect related to the central nervous system.


Q: How long is a typical course of treatment with Сигницеф?

A: The duration of treatment is not fixed and depends entirely on the specific bacterial infection being treated. Official dosing documents show common treatment courses typically range from 3 days up to 14 days for most conditions.


Q: Is it normal to feel a mild headache when first starting Сигницеф?

A: Headache is one of the most commonly reported reactions associated with this medicine. Central nervous system effects, including headache, are noted to potentially occur quite early in treatment, sometimes after the first dose.


Q: Why are people with certain pre-existing conditions advised not to use Сигницеф?

A: The medicine is contraindicated for individuals with certain pre-existing conditions due to defined safety risks. For example, the medicine is contraindicated for individuals with a history of myasthenia gravis because the medicine may worsen muscle weakness. Use is also contraindicated for those with a known allergy to the drug or other quinolones.


Q: How long does the effect of a single dose of Сигницеф last?

A: The medicine is designed to be taken once daily (every 24 hours), which is based on the average half-life of the active substance. The mean terminal plasma elimination half-life of levofloxacin is approximately 6 to 8 hours.


Q: What are the most commonly reported less-serious side effects of Сигницеф?

A: For systemic use, the most commonly reported reactions (those affecting 3% or more of patients in clinical trials) include nausea, headache, diarrhea, insomnia (trouble sleeping), constipation, and dizziness.


Q: Does Сигницеф need to be protected from light or heat?

A: Yes, official storage instructions specify that the medicine must be protected from both excessive heat and direct light. The product should be stored at controlled room temperature and kept away from freezing.


Q: Is there any risk of dependence or addiction with Сигницеф?

A: This medicine is a fluoroquinolone antibiotic and is not listed as a controlled substance by the US DEA. While regulatory warnings highlight central nervous system effects like anxiety and confusion, official documents do not mention a specific risk of dependence or addiction.

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How should Сигницеф be stored and disposed of?

The storage and disposal of Сигницеф (Levofloxacin) must strictly follow the conditions specified in the official regulatory labeling.

Official Storage Requirements

Condition Requirement
Temperature Store at controlled room temperature (e.g., 15 to 25 C or 59 to 77 F).
Protection Keep the medicine away from freezing, excessive heat, moisture, and direct light.
Container Keep the product in a closed container and the eye drop bottle tightly closed.
Child Safety Store the medicine out of the reach and sight of children.

Stability and Disposal

Once the Ophthalmic Solution bottle is first opened, the product must be discarded after 28 days. Unused or expired medicine must be disposed of in accordance with local regulatory requirements, and it is advised not to dispose of the medicine into wastewater or household trash.

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

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