Paar

Quick links to important sections

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 Paar

Property Description
Active ingredient Sparfloxacin (INN)
Form Oral tablet (film-coated) and Ophthalmic solution
Pharmacological class Fluoroquinolone Antibiotic (third-generation)
General purpose Bactericidal elimination of susceptible pathogens
Origin Synthetic

What is Paar and its Core Identity?

Paar is the commercial name for a medicine containing the active ingredient Sparfloxacin, which is a powerful, fully synthetic antimicrobial agent. This preparation is a single-ingredient drug, meaning its primary pharmacological effect is derived entirely from the presence of Sparfloxacin. The chemical formula for Sparfloxacin is C19H22F2N4O3. For systemic use, the drug is commonly presented as an oral tablet and, in some contexts, as an ophthalmic solution intended for topical use.

Paar's Pharmacological Class and Type

Paar belongs to the Fluoroquinolone class of antibacterials, which is a significant, advanced-generation group of antibiotics used to combat infections caused by bacteria. The classification of Sparfloxacin as a fluoroquinolone is based on its specific structure and its unique mechanism of action. Sparfloxacin is a recognized member of the fluoroquinolone family, offering a predictable spectrum of activity. Pharmacological studies have consistently supported the drug's effectiveness against susceptible bacterial strains. As a synthetic compound, Sparfloxacin provides broad-spectrum capabilities, enabling it to address a wide variety of bacterial species.

General Purpose: What Paar is Used For

  1. Elimination of susceptible bacteria.

The general purpose of Paar is to eliminate susceptible bacteria that cause infection by actively killing the pathogens, a function known as bactericidal action. This effect is achieved because Sparfloxacin interferes directly with the bacteria's essential DNA replication machinery. By targeting and inhibiting bacterial enzymes, the medicine stops the bacteria from reproducing and ultimately destroys them. Drugs in this class are potent inhibitors of bacterial DNA synthesis. This potent mechanism allows the medicine to help the body overcome established bacterial infections. The drug's nature requires it to be prescription-only to ensure appropriate use and clinical oversight.

Regulatory References

  1. Quinolones - StatPearls - NCBI Bookshelf

What side effects are possible with Paar?

Possible Side Effects and Safety Information

The safety profile for Paar (Sparfloxacin), a fluoroquinolone antibiotic, is defined by classifications and warnings documented in official regulatory sources. Adverse reactions are grouped by system and incidence, reflecting data from clinical trials and post-marketing experience.

Adverse Reaction Scope

Classification (e.g., Incidence ge 1%) System-Organ Class (SOC) Focus
Common Photosensitivity Reactions, Nausea, Diarrhea, Headache, QTc Interval Prolongation, Dizziness, Insomnia, Pruritus
Serious (Rare) Torsade de pointes, Tendon Rupture, Convulsions, Pseudomembranous Colitis, Acute Renal Failure

The most distinctive and frequently reported safety concern is phototoxicity, with a high incidence of photosensitivity reactions documented in regulatory records. This effect can occur after a single dose and may be prolonged or recur weeks after stopping the medicine.

High-Level Safety Constraints

As a fluoroquinolone, the medicine's regulatory label includes explicit warnings regarding serious, disabling effects that can involve the tendons, nerves, and central nervous system. These adverse events, such as tendon rupture and peripheral neuropathy, may manifest within hours to weeks after initiation of treatment.

Cardiovascular Risk: The drug is officially associated with QTc interval prolongation. This effect is common and increases the potential risk for life-threatening events like Torsade de pointes, particularly when used with other QT-prolonging medications. This risk is noted as being more frequently reported in older adults (ge 65 years).

Population-Specific Notes: Use is not authorized for the pediatric population (le 18 years). For patients with renal impairment, plasma concentrations may be increased due to reduced clearance, necessitating specific regulatory considerations.


Regulatory Safety Summary: The official safety profile highlights the dual constraints of cardiac electrical stability and sunlight exposure, alongside the class-specific risk of serious musculoskeletal and neurological harm. This framework of documented risks defines the high-level boundaries and observational requirements for the medicine.

Overdose and Emergency Response

Taking too much Paar (Paracetamol/Acetaminophen) is a serious medical event that can lead to severe liver damage, liver failure, and death. Overdose can occur from a single large ingestion or from repeated excessive dosing over time. Immediate medical attention is required in all suspected cases, even if symptoms are not yet apparent.

Signs of Overdose

Symptoms may not manifest until 12 or more hours after ingestion, and early signs can resemble flu or cold symptoms. The initial phase often includes non-specific signs:

  • Nausea and vomiting
  • Loss of appetite
  • Stomach pain or abdominal cramps
  • Sweating

Delayed or more severe clinical manifestations, typically appearing 1 to 4 days later, indicate liver injury and may include:

  • Jaundice (yellowing of the skin and eyes)
  • Pain in the upper right side of the abdomen
  • Confusion or extreme drowsiness
  • Coma and seizures

When to Seek Immediate Help

An overdose is a life-threatening emergency. Call your local emergency services (e.g., 911 or 000) or a national Poison Control Center immediately if you or someone else has taken more than the recommended dose, regardless of whether any symptoms are present. Do not delay seeking help, as treatment with the antidote N-acetylcysteine (NAC) is most effective when administered within eight hours of ingestion. Patients with chronic alcohol consumption or existing liver disease may be at increased risk of toxicity.

Therapeutic Uses of Paar

What Paar Treats: Main Uses and Benefits

Paar (Sparfloxacin) is a prescription antibiotic used to address the acute symptoms of established bacterial infections. Its use is focused on addressing the causative bacterial agents of susceptible infections. This may help support the management of the underlying illness and ease patient discomfort. The drug is utilized for the treatment of specific infections.

The medication is commonly used to help with conditions presenting with acute episodes, including certain infections of the lower airways such as Community-Acquired Pneumonia (CAP) and Acute Exacerbations of Chronic Bronchitis (AECB), specific urogenital infections like Non-gonococcal Urethritis, and localized external infections like Bacterial Conjunctivitis. It is applied across domains where additional symptomatic support is needed, particularly when symptoms intensify and supportive relief is important.

“It is relevant when symptoms become temporarily overwhelming and short-term symptomatic assistance is needed to address the heightened physiological stress.”


Relief from Acute Respiratory Symptoms

This domain covers infections where symptoms related to heightened physiological activity often include a worsening cough, fever, and the production of pus-containing sputum. Paar provides supportive assistance that may be part of symptomatic management of the infectious process, which contributes to improved day-to-day comfort during these acute, functionally disruptive episodes.

Quick Fact: Relief for Acute Systemic Symptoms Paar assists with maintaining functional stability and helps address groups of symptoms that may appear suddenly.

Urogenital and Topical Infection Management

Paar is also utilized for infections characterized by localized discomfort, such as the increased distress of painful or difficult urination (dysuria) or the inflammatory states of the eye. Its use is relevant for managing symptoms related to systemic imbalance, which contributes to improved patient comfort and helps ease the overall symptom load.

Eligibility and Restrictions for Use

Paar, which may be formulated as an analgesic containing a non-steroidal anti-inflammatory drug (NSAID) or as an antibiotic, is not suitable for all patients. Its use is determined by the specific active ingredients in the product.

General Considerations for Use

Paar is typically used to manage conditions like fever, mild-to-moderate pain (headache, toothache, muscle pain, arthritis), or, in its antibiotic formulation, bacterial infections of the respiratory, urinary, and skin systems.


Key Contraindications (Who Should Not Use Paar)

Condition
Allergy to the active ingredient(s) (e.g., analgesic or antibiotic components) or any inactive component.
Severe Liver Disease or significant history of alcoholism, due to the risk of exacerbating liver damage, especially with certain analgesic formulations.
Kidney Disease (e.g., analgesic nephropathy) as it may worsen kidney function.
Heart Problems (e.g., prolonged QT interval or heart rhythm issues), which is a key restriction for the antibiotic formulation.
Gastrointestinal Ulcers/Bleeding (for the NSAID formulation), due to the increased risk of stomach and intestinal irritation or hemorrhage.

Use in pregnancy and breastfeeding is generally not recommended without a doctor's explicit consultation, as safety data are often limited. Patients should always inform their healthcare provider of all existing medical conditions, including diabetes, hypertension, and a history of seizures, before starting Paar.

What should I know about interactions with other medicines?

Paar Interactions with other medicines and products

Paar's (Sparfloxacin) interaction profile, as defined by regulatory documents, is structured around two critical areas: drug-drug interactions that significantly modify plasma exposure and those that pose a pharmacodynamic risk to cardiac function.


Exposure-Altering Interactions (Reduced Absorption)

Concurrent administration of certain products containing multivalent cations can reduce the oral bioavailability of Paar by up to 50%. This is caused by chelation, where the cations bind to sparfloxacin, forming a poorly absorbed complex.

Interacting Product Category Timing Restriction (Mandatory)
Aluminum/Magnesium-containing Antacids Must be taken a minimum of 4 hours after Paar dose
Sucralfate (Ulcer Medicine) Must be taken a minimum of 4 hours after Paar dose
Supplements (Iron, Zinc, Calcium) Must be taken a minimum of 4 hours after Paar dose

Oral absorption is documented as unaffected by co-administration with food, milk, or high-fat meals.


Pharmacodynamic and Metabolic Interactions

Paar carries a formal regulatory restriction against co-administration with certain medicines that affect heart rhythm:

  • Contraindicated Combinations: The use of Paar is contraindicated with Class IA and Class III antiarrhythmic drugs (e.g., Quinidine, Amiodarone, Sotalol, Disopyramide) due to an officially documented additive pharmacodynamic effect that increases the risk of QTc interval prolongation.

  • Negated Interactions: Regulatory studies documented that Paar does not increase the plasma concentrations of Theophylline and does not increase the anti-coagulant effect of Warfarin.

  • Population Note: The interaction leading to QTc prolongation is reported more frequently in elderly patients (ge 65 years).

Mechanism of Action

Targeted Inhibition of Bacterial Genetic Machinery

Paar (Sparfloxacin) functions by acting directly on two essential bacterial enzymes: DNA Gyrase and Topoisomerase IV. The drug acts as an inhibitor, binding to the bacterial DNA-enzyme complex and preventing these enzymes from performing their necessary functions in managing DNA structure and separating chromosomes for cell division.


Induction of Irreversible Bacterial DNA Damage

The binding mechanism of Sparfloxacin stabilizes a short-lived state where the bacterial DNA strands are broken, effectively converting the Topoisomerase enzymes into agents that generate irreparable double-strand breaks. This severe genetic damage and the resulting cascade failure of cellular processes lead to the drug's bactericidal effect—the active killing of susceptible pathogens.


Mechanistic Limits: Resistance Pathways

The physiological efficacy of Paar’s mechanism can be limited by counter-mechanisms developed by bacteria, such as mutations in the target Topoisomerase enzymes that reduce drug binding affinity, or the activation of efflux pumps that rapidly transport the drug out of the bacterial cell. These mechanisms directly constrain the drug's ability to exert its inhibitory action.

Dosage and Administration Information

How Paar is Used: Official Administration Guidelines

The usage of Paar (Sparfloxacin) is defined by a specific, standardized protocol. This section describes the approved administration route, dosing schedule, and required contextual conditions for the oral tablet form.


Administration Scope

Property Official Protocol
Route of Administration Oral (for systemic treatment) or Topical (for ophthalmic solution).
Standard Adult Dosing 400 mg as a single loading dose on Day 1, followed by 200 mg as a maintenance dose once daily thereafter.
Frequency Pattern Once daily (q24 hours) for the maintenance phase.
Course Duration The typical total duration of therapy for approved infections is 10 days.

Procedural and Contextual Conditions

Paar tablets may be taken with or without food, including high-fat meals or milk. However, the tablet must be swallowed with a full glass of water as a preparation requirement. A critical administration constraint involves separating Paar from products containing certain minerals; its oral intake must be spaced by at least 4 hours from antacids, sucralfate, or supplements containing magnesium, aluminum, iron, or zinc.

For patients with moderately to severely reduced kidney function (creatinine clearance <50 mL/min), a specific adjustment is required: the initial 400 mg loading dose is followed by a reduced maintenance schedule of 200 mg every 48 hours. This ensures the standardized protocol accounts for physiological differences in drug elimination.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Paar

Evidence for Use in Community-Acquired Pneumonia (CAP)

Research related to Community-Acquired Pneumonia (CAP) has explored Paar primarily through short-term, controlled studies known as Randomized Controlled Trials (RCTs). These studies were designed to examine how symptoms evolved over defined time intervals in patients with mild to moderate disease severity, including older adults. Researchers primarily focused on outcomes related to physical discomfort and systemic or functional imbalance, such as the patient's overall Clinical Response Rate and the laboratory-confirmed Bacteriological Eradication Rate (a measured change in the presence of infectious bacteria).

Studies conducted during periods of increased symptom activity reported findings that generally characterized Paar's measured outcomes as comparable to those of other treatment agents evaluated in the same trials. However, long-term outcomes are not fully established. Research provides limited insight into long-term functional stability, such as the frequency of relapse or recurrence of CAP after the treatment course is finished.


Evidence for Use in Acute Exacerbations of Chronic Bronchitis (AECB)

For Acute Exacerbations of Chronic Bronchitis (AECB), research has explored Paar through multicenter comparative studies involving adults who experience periods of heightened symptom activity, such as increased coughing or sputum production. These trials examined outcomes capturing phases of heightened symptom activity and monitored the overall Success Rate, which was judged based on changes in key episodic symptoms.

Findings describe patterns where the measured clinical success rates were observed to be similar to those of certain other antibiotic comparator agents evaluated in the same studies. Comparative evidence against very new treatment options that have emerged since the original trials is currently lacking. Research does not fully establish the durability of the observed response or the frequency of future exacerbations over extended periods.


What Research Gaps and Uncertainties Remain

The overall evidence base highlights key areas where certainty remains low or data are lacking. One major gap is the lack of extensive, long-term data characterizing patient outcomes and recurrence rates beyond the short duration of the clinical trials. Furthermore, the results apply only to the specific populations studied, and research does not determine whether an individual with unique circumstances will respond similarly. Limited data also exist for pediatric populations and patients with multiple, complex comorbidities.

Key Studies & References

  1. DrugBank: Sparfloxacin (DB01053) – Pharmacological Class and Mechanism of Action

Frequently Asked Questions (FAQ)

Common questions about Paar (FAQ)


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

According to official product information, Paar (Sparfloxacin) is classified as a Fluoroquinolone antibiotic. This classification is based on its specific chemical structure and its unique way of working within the body, which involves inhibiting bacterial DNA enzymes. This designation identifies Paar as belonging to a specific family of antimicrobial medicines.


Q: How is Paar different from other medicines that treat the same thing?

Official descriptions state that Paar’s primary function is bactericidal, meaning it actively kills susceptible bacteria. It achieves this by targeting two essential bacterial enzymes, DNA Gyrase and Topoisomerase IV. Regulatory studies indicated that Paar's measured clinical results were generally comparable to those of other agents that were evaluated in the same trials for conditions like Community-Acquired Pneumonia.


Q: Is Paar safe to use long-term?

Regulatory documents state that clinical studies for Paar primarily evaluated its use over short durations, typically 10 days, and that information on long-term outcomes is not fully established. Additionally, official warnings associated with this class of drug concern serious effects involving the tendons, nerves, and central nervous system, which may sometimes manifest weeks after treatment has been initiated.


Q: Can Paar be taken by someone with kidney problems?

For patients with moderately to severely reduced kidney function, official prescribing information describes a specific dose adjustment that may be needed to account for the body’s reduced clearance of the drug. However, severe kidney disease is listed among the conditions that are generally considered key contraindications (reasons not to use the drug) in the official documents.


Q: Can people who are elderly use Paar?

The pharmacokinetics (drug action in the body) of Paar are not described as altered in older adults who have normal kidney function. However, the official safety profile notes that the risk of QTc interval prolongation—an effect on heart rhythm—is reported as more frequent in older adults (aged 65 years and over). This is an important safety consideration defined in regulatory documents for this population.


Q: What research is available on Paar's use in children?

Official regulatory documents indicate that the use of Paar is not authorized for the pediatric population (children aged 18 years and under). Furthermore, regulatory information notes that the pharmacokinetics of Paar have not been studied in pediatric subjects, and limited clinical data exist for this population.


Q: Does Paar affect blood pressure?

The official safety profile for Paar documents potential cardiovascular side effects. While the main risk relates to QTc prolongation, post-marketing experience has included reports of high blood pressure, known as hypertension. These reports are included in the overall adverse reactions section of regulatory documents.


Q: What types of allergic reactions are associated with Paar?

Official safety data confirms the risk of allergic reactions. Less common skin reactions reported include pruritus (itching) and rash. More severe dermatologic reactions, such as bullous eruption (large blisters), erythema nodosum, and angioedema (swelling beneath the skin), have also been reported during the postmarketing phase.


Q: Does Paar have a 'black box' warning, and what does it mean?

Regulatory communications for the fluoroquinolone class of antibiotics, which includes Paar, mandate the inclusion of the most stringent warnings on product labels. These warnings advise patients and providers of potentially disabling and serious side effects involving the tendons, nerves, and central nervous system. This type of warning serves as the most stringent regulatory advisory to draw attention to these potential risks.


Q: How long does it usually take to notice an effect from Paar?

Official information regarding the drug's absorption states that the mean peak plasma concentration (Cmax) of Paar in the bloodstream is typically achieved between 3 to 5 hours after a dose is administered. This time frame indicates when the highest concentration of the medicine is usually present in the body.


Q: Can I stop taking Paar if I start feeling better?

Official patient instructions state that the full prescribed course of Paar is typically used, even if symptoms begin to improve quickly. The rationale noted is that symptoms may resolve before the underlying bacterial infection is fully treated. Completing the full course aligns with standard regulatory guidance for antibiotics.


Q: What happens if I miss a dose of Paar?

Official guidelines describe that if a dose is missed, taking it as soon as possible is the advised action. However, if it is almost time for the next scheduled dose, the missed dose should be skipped to return to the regular schedule. Regulatory information specifically states that taking a double dose to make up for a missed one is not advised.


Q: Is it normal to feel tired or sleepy when taking Paar?

The official side effect information reports that Paar may cause some people to become dizzy, lightheaded, or drowsy (sleepy). Other common central nervous system reactions listed include insomnia (difficulty sleeping) and headache. Due to these possibilities, official warnings describe that patients should understand how the medicine affects their alertness before operating machinery or driving.


Q: Is Paar a controlled substance?

According to official regulatory status and classifications, Paar (Sparfloxacin) is not classified as a controlled substance under the U.S. Controlled Substances Act (CSA) or similar international frameworks.


Q: Does taking Paar affect driving or operating machinery?

Official warnings state that since Paar can cause some people to become dizzy, lightheaded, drowsy, or less alert, patients should understand how they react to the medicine before they attempt activities such as driving, operating heavy machinery, or any task where a reduction in alertness could be dangerous.


Q: What is the difference between Paar and a supplement?

Paar is a prescription-only medication, formally classified as a synthetic Fluoroquinolone antibiotic by regulatory bodies. Its purpose is the bactericidal elimination of susceptible bacterial pathogens. This differs significantly from the regulatory classification and intended use of dietary supplements.


Q: How long does Paar stay in your system after stopping it?

Regulatory pharmacokinetic data indicate that the mean terminal elimination half-life of Paar in plasma is approximately 20 hours, with official data showing a range between 16 and 30 hours. The half-life is the time it takes for the concentration of the medicine in the blood to reduce by half.


Q: Do the side effects of Paar go away over time?

The resolution of side effects varies. However, regulatory warnings note that serious side effects affecting the tendons, nerves, and central nervous system may be potentially permanent. Other effects, like phototoxicity (extreme sun sensitivity), have been documented as prolonged or may recur weeks after stopping the medicine.


Q: Can Paar interact with birth control pills?

The official Paar product label does not specifically list an interaction with hormonal contraceptives. Regulatory guidance for antibiotics in general often notes that most classes, other than rifamycin-type antibiotics, are not known to decrease the effectiveness of birth control pills.


Q: Has Paar been recalled recently?

Regulatory sources, such as the FDA and DrugBank, indicate that Paar (Sparfloxacin) has been withdrawn from the U.S. market and is officially classified as discontinued by regulatory bodies.


Q: Is Paar safe for people with liver disease?

Official regulatory documents list severe liver disease or a significant history of alcoholism among the key contraindications for Paar. Furthermore, monitoring for hepatotoxicity (liver damage) is noted as being a required observation for this class of medicine.


Q: Can I use Paar if I am pregnant or breastfeeding?

Regulatory information indicates that Paar is generally not recommended for use in pregnancy without specific consultation. Regarding breastfeeding, Paar is known to be excreted into human milk. Official guidance describes that a risk/benefit decision must be considered regarding discontinuing the drug or discontinuing nursing.


Q: What is the half-life of Paar?

The mean terminal elimination half-life of Paar in plasma is approximately 20 hours, with official data showing a range between 16 and 30 hours. This is a measure of how quickly the medicine is eliminated from the body.


Q: Is Paar effective for all severities of the condition it treats?

The regulatory overview of clinical trials shows that studies for conditions like Community-Acquired Pneumonia (CAP) primarily examined patient populations with mild to moderate disease severity. The clinical effectiveness of Paar in patients presenting with more severe cases is not fully detailed within the existing research evidence summaries.

How should Paar be stored and disposed of?

Paar (Sparfloxacin) must be stored and handled strictly according to the conditions defined in the official regulatory documents to maintain its stability.

Storage Component Regulatory Requirement
Temperature Store at controlled room temperature (20 C to 25 C / 68 F to 77 F).
Protection Protect from light (keeping in the original carton), excessive heat, and moisture.
Handling Must be stored in a closed container and must not be frozen.
Child Safety Keep out of the reach and sight of children at all times.
Disposal Dispose of unneeded or expired tablets through a formal drug take-back program or by following the official FDA guidelines for household disposal.

The storage mandate requires stable temperature control and protection from environmental factors to ensure the medicine's integrity until the expiry date. All unused or outdated product must be discarded using authorized methods, such as drug take-back sites, to prevent environmental contamination and accidental exposure, as per government disposal protocols.

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

Available in countries:

Equivalent of Paar found in:

A-Z Index: