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Levofloxacina (Levaquin)

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Levofloxacina belongs to the class of medicines known as quinolone antibiotics. It works by killing bacteria or preventing their growth. However, this medicine will not work for colds, flu, or other virus infections.

Other names for this medication:
Cravit, Cravox, Elequine, Farlev, Glevo, Leflox, Levaquin, Levobact, Levocin, Levoday, Levoflox, Levofloxacin, Levofloxacino, Levomac, Levomax, Levox, Levoxa, Levoxacin, Levoxin, Levozine, Loxin, Loxof, Novacilina, Oftaquix, Proxime, Recamicina, Tamiram, Tavanic, Truxa, Ultraquin, Uniflox, Voxin

Similar Products:
Doxycycline, Monodox, Microdox, Periostat


Also known as:  Levaquin.


To reduce the development of drug-resistant bacteria and maintain the effectiveness of Levofloxacina and other antibacterial drugs, Levofloxacina should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

Levofloxacina Tablets/Injection and Oral Solution are indicated for the treatment of adults (≥18 years of age) with mild, moderate, and severe infections caused by susceptible strains of the designated microorganisms in the conditions listed in this section. Levofloxacina Injection is indicated when intravenous administration offers a route of administration advantageous to the patient (e.g., patient cannot tolerate an oral dosage form).


To reduce the development of drug-resistant bacteria and maintain the effectiveness of Levofloxacina and other antibacterial drugs, Levofloxacina should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

Levofloxacina Oral Solution are indicated for the treatment of adults ( ≥ 18 years of age) with mild, moderate, and severe infections caused by susceptible isolates of the designated microorganisms in the conditions listed in this section.


Overdose of the drug should be strictly avoided and if anyone has accidentally taken the overdose of the drug, then the victim should be provided with emergency medical help. Overdose victim can also consult to their local poison helpline. Some of the overdose symptoms include loss of coordination, drooping eyelids, weakness, decreased activity, trouble breathing, sweating, tremors, or seizure.


Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F) away from moisture and heat. Keep in a tightly closed container. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Levofloxacina are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Risk of tendinitis and tendon rupture is increased. This risk is further increased in older patients usually over 60 years of age, in patients taking corticosteroids, and in patients with kidney, heart and lung transplants. Discontinue if pain or inflammation in a tendon occurs.

Anaphylactic reactions and allergic skin reactions, serious, occasionally fatal, may occur after first dose.

Hematologic (including agranulocytosis, thrombocytopenia), and renal toxicities may occur after multiple doses.

Hepatotoxicity: Severe, and sometimes fatal, hepatoxicity has been reported. Discontinue immediately if signs and symptoms of hepatitis occur.

Central nervous system effects, including convulsions, anxiety, confusion, depression, and insomnia may occur after the first dose. Use with caution in patients with known or suspected disorders that may predispose them to seizures or lower the seizure threshold.

Clostridium difficile-associated colitis: evaluate if diarrhea occurs.

Peripheral neuropathy: discontinue if symptoms occur in order to prevent irreversibility.

Prolongation of the QT interval and isolated cases of torsade de pointes have been reported. Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval.

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In total, 187 patients were randomized to levofloxacin (n = 95) or placebo (n = 92). The rate of grade 3/4 infections or grade 1/2 infections treated with additional antibiotics (intent-to-treat population) was 27.5% (95% confidence interval, 19.3-39.0%) for levofloxacin versus 36.7% (95% confidence interval, 27.1-48.0%) for placebo. Median time to first infection was 67 days for levofloxacin versus 46 days for placebo. Grade 3/4 infections occurred in 8.8% of patients in the levofloxacin group versus 26.7% for placebo. There was one grade 5 infection in each group. Grade ≥3 toxicities (levofloxacin versus placebo) included leukopenia (63.2 versus 52.2%), neutropenia (62.1 versus 51.1%), dyspnea (12.6 versus 8.7%), and pain (10.5 versus 9.8%). There was no significant difference in overall survival or progression-free survival between groups.

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The aim of this study was to compare the inhibitory effect of antibiotic combinations in vitro with efficacy in Galleria mellonella larvae in vivo to identify efficacious combinations that target Pseudomonas aeruginosa. P. aeruginosa NCTC 13437, a multidrug-resistant strain resistant to β-lactams and aminoglycosides, was used. Susceptibility to cefotaxime, piperacillin, meropenem, amikacin, levofloxacin and colistin alone, or in dual or triple combinations, was measured in vitro via a 24 h time-kill assay. In vitro results were then compared with the efficacy of the same dual or triple antibiotic combinations versus G. mellonella larvae infected with P. aeruginosa. G. mellonella haemolymph burden of P. aeruginosa was determined over 96 h post-infection and treatment with the most potent combination therapies. Many dual and triple combinations of antibiotics displayed synergistic inhibition of multidrug-resistant P. aeruginosa in vitro. There was little correlation between combinations that were synergistic in vitro and those that showed enhanced efficacy in vivo versus infected G. mellonella larvae. The most potent dual and triple combinations in vivo were cefotaxime plus piperacillin, and meropenem plus piperacillin and amikacin, respectively. Fewer combinations were found to offer enhanced therapeutic benefit in vivo compared with in vitro. The therapeutic benefit arising from treatment with antibiotic combinations in vivo correlated with reduced larval burden of P. aeruginosa. This study has identified antibiotic combinations that merit further investigation for their clinical potential and has demonstrated the utility of using G. mellonella to screen for novel antibiotic treatments that demonstrate efficacy in vivo.

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S. pneumoniae and H. influenzae are still the most prevalent organisms isolated in acute exacerbation of chronic obstructive pulmonary disease in our population. Levofloxacin is still considered a highly sensitive antibiotic against these common micro-organisms in our population, but S. pneumoniae has started developing resistance against levofloxacin. Therefore, intermittent surveillance regarding development of resistance pattern of common micro-organisms against commonly prescribed antibiotics is required.

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Intracellular bacteria accounted for the largest proportion of the total inoculum in this model of foreign-body infection. The intracellular activity of an antibiotic seems to be an additional relevant factor in the antibiotic response to these infections.

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Although rate of pharyngitis associated with GCS and GGS is marginally lower than GAS, their carriage rate among healthy and relative higher drug resistance emphasizes the need for periodic surveillance of infection by the different serogroups of BHS.

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We compared Etest and disk diffusion to broth microdilution for the detection of fluoroquinolone resistance in 135 typhoidal and nontyphoidal serovars of Salmonella. Categorical agreements for the ciprofloxacin and levofloxacin Etests were 89.6 and 83.7%, respectively. Disk diffusion categorical agreements were 88.2 and 93.3%, respectively. Only minor errors were observed.

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The photodegradation fate of widely used fluoroquinolone (FQ) drugs has been studied both at the water-soil interface and in soil at actual concentrations (500 ng g(-1)) under natural solar light. Both human and veterinary drugs have been examined, namely ciprofloxacin, danofloxacin, enrofloxacin, levofloxacin, marbofloxacin and moxifloxacin. After spiking and irradiation, samples were submitted to microwave-assisted extraction and analyzed by high-performance liquid chromatography coupled to fluorescence detection (HPLC-FD). FQs degradation was faster in aqueous soil suspension than in neat soil (but lower than in "clean" water). A number of byproducts were identified by HPLC electrospray ionization tandem mass spectrometry after a post-extraction cleanup based on a molecularly imprinted polymer phase, for a more accurate detection. The distribution in the suspension was intermediate between those observed in soils and in aqueous solutions.

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levofloxacina 300 mg 2017-08-23

Seven-valent pneumococcal conjugate vaccine (PCV7) provides protection against invasive pneumococcal disease that extends Dalacin 300 Mg Tabletta to unvaccinated populations, such as elderly or immunocompromised adults. PCV7 also reduces incidence of pneumococcal penicillin resistance. In this study, the potential impact of PCV7 on pneumococcal fluoroquinolone resistance was examined.

levofloxacina 750 mg efectos adversos 2015-08-30

The aim of the present study was to investigate the potential synergy between meropenem and levofloxacin in vitro and in experimental meningitis and to determine the effect of meropenem on levofloxacin-induced resistance in vitro. Meropenem increased the efficacy of Novidat Syrup 125mg levofloxacin against the penicillin-resistant pneumococcal strain KR4 in time-killing assays in vitro and acted synergistically against a second penicillin-resistant strain WB4. In the checkerboard, only an additive effect (FIC indices: 1.0) was observed for both strains. In cycling experiments in vitro, levofloxacin alone led to a 64-fold increase in the MIC for both strains after 12 cycles. Addition of meropenem in sub-MIC concentrations (0.25 x MIC) completely inhibited the selection of levofloxacin-resistant mutants in WB4 after 12 cycles. In KR4, the addition of meropenem led to just a twofold increase in the MIC for levofloxacin after 12 cycles. Mutations detected in the genes encoding for topoisomerase IV (parC) and gyrase (gyrA) confirmed the levofloxacin-induced resistance in both strains. Addition of meropenem was able to completely suppress levofloxacin-induced mutations in WB4 and led to only one mutation in parE in KR4. In experimental meningitis, meropenem, given in two doses (2 x 125 mg/kg), produced a good bactericidal activity (-0.45 Deltalog10 cfu/ml.h) comparable to one dose (1 x 10 mg/kg) of levofloxacin (-0.44 Deltalog10 cfu/ml.h) against the penicillin-resistant strain WB4. Meropenem combined with levofloxacin acted synergistically (-0.93 Deltalog10 cfu/ml.h), sterilizing the CSF of all rabbits.

levofloxacina 750 mg posologia 2016-12-21

We evaluated the in vivo activity of levofloxacin alone or in combination with imipenem or amikacin in a mouse model of Acinetobacter baumannii pneumonia using a susceptible strain and one with low-level resistance (MIC/MBC of levofloxacin: 0.06/0.06 and 4/4 mg/L, respectively). As demonstrated previously with other pathogens, the AUC/MIC ratio predicted the efficacy of fluoroquinolones against Denvar Antibiotic A. baumannii. This parameter correlated with bactericidal effect and survival. Combination therapy did not enhance the efficacy of levofloxacin.

levofloxacina 750 mg infeccion urinaria 2017-09-30

Susceptibility of 92 strains of mycobacteria to levofloxacin (5, 10 and 50 mcg/mL) was investigated by indirect method of absolute concentrations on Levenstain-Jensen media. The investigation was performed on 85 strains of Mycobacterium tuberculosis isolated from 83 patients with different types of tuberculosis and also on drug-sensitive laboratory strains of M. tuberculosis H37Rv-M, H37Rv-GISK, Academia, M. bovis-bovinus 8, M. bovis BCG and on two strains of M. fortuitum with total resistance to antimycobacterial agents. 87.8 per cent of clinical isolates were multi-drug resistant. From one patient treated with ciprofloxacin two strains of M. tuberculosis were isolated--one resistant to 5 mcg/mL of levofloxacin and second Clamoxin 600 Mg Dosis strain-resistant to 10 mcg/mL of levofloxacin. All other clinical and laboratory strains of mycobacteria (97.8 per cent) were susceptible to all three concentrations of levofloxacin.

levofloxacina 750 mg dosis 2016-12-22

Moxifloxacin monotherapy, 400 mg once daily for 14 days, is Clindamicina Gel Para Acne an effective and well-tolerated oral treatment for women with uPID.

levofloxacina y alcohol 2017-04-29

Patients who were given selected antimicrobial agents (piperacillin-tazobactam, levofloxacin, or vancomycin) by internal Amoksiklav 625 Mg Prospect medicine ward teams.

levofloxacina dose 2017-08-13

Histamine releases induced by the fluoroquinolone antimicrobial levofloxacin (LVFX) were investigated using mast cells separated from various organs and peripheral basophils of dogs, being the most susceptible species to quinolone derivatives, in both in vivo and in vitro systems. An intravenous infusion of LVFX at 30 mg/kg over a 30-min period produced endogenous histamine release from 5 min, and a maximum at 30 min, in which the plasma LVFX concentration was approximately 50 microM. A close correlation (r = 0.87, n = 20) between histamine and LVFX concentrations in plasma during the infusion was observed. In the in vitro study, LVFX at 30 microM or more caused histamine release Tetrax Magnetic Phone Holder Review from mast cells separated from the liver and skin, but not from the gastric mucosa, lung, and peripheral basophils. More exactly, the liver mast cells were most susceptible to LVFX among the organs tested. On the other hand, compound 48/80, a prototype histamine liberator, elicited the histamine release from the liver or skin mast cells at 10 microg/ml, and the calcium ionophore A23187 at 1 microM exhibited the histamine release from the mast cells derived from all organs examined. Histochemical analysis revealed that the liver and skin mast cells had positive reaction for both alcian blue and safranin staining, but the gastric mucosa and lung mast cells were only positive for alcian blue staining, indicating that LVFX preferably activated the connective tissue-type mast cells rather than the mucosal-type mast cells. The degranulation of the liver and skin mast cells brought about by either LVFX or compound 48/80, unlike the calcium ionophore A23187, was blocked by pretreatment with pertussis toxin, suggesting the involvement of pertussis toxin-sensitive G proteins. The results obtained from the canine experiments strongly suggest that LVFX induces histamine release from the connective tissue-type mast cells distributed mainly in the liver, somewhat in the cutaneous tissue, through the activation of pertussis toxin-sensitive G proteins.

levofloxacina 500 mg pret 2017-04-20

Overall clinical success rates (cured plus improved) for levofloxacin and ciprofloxacin were 98% and 94%, respectively (95% confidence interval [CI], -7.7, 0.7). Overall microbiologic eradication rates by patient were 98% in the levofloxacin group and 89% in the ciprofloxacin group (95% CI, -14.5, -2.7), whereas eradication rates by pathogen were 98% and 90%, respectively (95% CI, -12.6, -3.7). The eradication rate for Staphylococcus aureus was 100% in the levofloxacin group and Is Cefuroxime A Strong Antibiotic 87% in the ciprofloxacin group (95% CI, -20.2, -5.1). Treatment-emergent adverse events were comparable, with drug-related adverse events reported in 6% of levofloxacin patients and 5% of ciprofloxacin patients.

levofloxacina emiidrato 500 mg prezzo 2017-06-15

A total of 6,991 unique patient isolates of Streptococcus pneumoniae were collected from October 1997 to June 2002 from 25 medical centers in 9 of the 10 Canadian provinces. Among these isolates, 20.2% were penicillin nonsusceptible, with 14.6% being penicillin intermediate (MIC, 0.12 to 1 microg/ml) and 5.6% being penicillin resistant (MIC, > or =2 microg/ml). The proportion of high-level penicillin-resistant S. pneumoniae isolates increased from 2.4 to 13.8% over the last 3 years of the study, and the proportion of multidrug-resistant S. pneumoniae isolates increased from 2.7 to 8.8% over the 5-year period. Resistant rates (intermediate and resistant) among non-beta-lactam agents were as follows: macrolides, 9.6 to 9.9%; clindamycin, 3.8%; doxycycline, 5.5%; chloramphenicol, 3.9%; and trimethoprim-sulfamethoxazole, 19.0%. Rates of resistance to non-beta-lactam agents were higher among penicillin-resistant strains than among penicillin-susceptible strains. No resistance to vancomycin or linezolid was observed; however, 0.1% intermediate resistance to quinupristin-dalfopristin was observed. The rate of macrolide resistance (intermediate and resistant) increased from 7.9 to 11.1% over the 5 years. For the fluoroquinolones, the order of activity based on the MICs at which 50% of isolates are inhibited (MIC(50)s) and the MIC(90)s was gemifloxacin > clinafloxacin > trovafloxacin > moxifloxacin > grepafloxacin > gatifloxacin > levofloxacin > ciprofloxacin. The investigational compounds ABT-773 (MIC(90), 0.008 microg/ml), ABT-492 (MIC(90), 0.015 microg/ml), GAR-936 (tigecycline; MIC(90), 0.06 microg/ml), and BMS284756 (garenoxacin; MIC(90), 0.06 micro g/ml) displayed excellent activities. Despite decreases in the rates of antibiotic consumption in Canada over the 5-year period, the rates of both high-level penicillin-resistant and multidrug-resistant S. pneumoniae isolates are increasing in Canada.

prospecto levofloxacina 750 mg 2016-05-22

Ensuring an appropriate dosage of renally eliminated drugs for patients with renal insufficiency is important for preventing adverse drug reactions. We investigated the effectiveness of interventions by pharmacists in a hospital pharmaceutical department. The comparative study was performed at Gifu Municipal Hospital in Japan from March to August 2011, and included an intervention (142 patients) and a control group (98 patients). Upon receiving a prescription of levofloxacin for patients aged > or = 75 years, pharmacists evaluated the patients' kidney function and adjusted the appropriate dosage at the time of dispensation. In the intervention and control groups, levofloxacin-induced adverse reactions developed in 6 of 142 (4.2%) and 13 of 98 (13.3%) patients, respectively (p < 0.05). The cost of reducing levofloxacin per patient was yen 191.1 and yen 0 in the intervention and control groups, respectively. The cost per patient for adverse reaction treatments and examinations was yen 15.5 and yen 290.0 in the intervention and control groups, respectively. The intergroup difference in the total cost per patient was yen 465.6. Dose adjustment of levofloxacin at the time of dispensation by the pharmacist for patients aged > or = 75 years resulted in a decrease in the incidence of adverse reactions and cost. These findings can be applied not only to hospitals, but also to community pharmacies, because the intervention, which is a manual system, is simply performed when pharmacists are dispensing drugs.