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Gyrablock (Noroxin)

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Gyrablock is used to treat certain types of infections, including infections of the urinary tract and prostate (a male reproductive gland). Gyrablock is in a class of antibiotics called fluoroquinolones. It works by killing bacteria that cause infections. Antibiotics will not work for colds, flu, or other viral infections.

Other names for this medication:
Ambigram, Danilon, Loxone, Nolicin, Norbactin, Norfloxacin, Norilet, Normax, Noroxin, Uroflox, Uroxacin

Similar Products:
Cipro, Levaquin, Quixin, Tequin, Avelox, Ocuflox

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Also known as:  Noroxin.


Gyrablock comes as a tablet to take by mouth. It is usually taken twice a day for 3 to 28 days. The length of treatment depends on the type of infection being treated. Your doctor will tell you how long to take Gyrablock. Take Gyrablock at around the same times every day and try to space your doses 12 hours apart. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take Gyrablock exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Take Gyrablock at least 1 hour before or 2 hours after meals or after drinking milk or eating dairy products.

Swallow the tablets with a full glass of water.

You should begin to feel better during the first few days of your treatment with Gyrablock. If your symptoms do not improve or if they get worse, call your doctor.

Take Gyrablock until you finish the prescription, even if you feel better. Do not stop taking Gyrablock without talking to your doctor unless you experience certain serious side effects listed in the IMPORTANT WARNING or SIDE EFFECT sections. If you stop taking Gyrablock too soon or if you skip doses, your infection may not be completely treated and the bacteria may become resistant to antibiotics.

Gyrablock is also sometimes used to treat certain infections of the stomach and intestines. Talk to your doctor about the risks of using this medication for your condition.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.


Before taking Gyrablock tell your doctor and pharmacist if you are allergic or have had a severe reaction to Gyrablock; other quinolone or fluoroquinolone antibiotics such as ciprofloxacin (Cipro), gatifloxacin (Tequin) (not available in the U.S.), gemifloxacin (Factive), levofloxacin (Levaquin), lomefloxacin (Maxaquin) (not available in the U.S.), moxifloxacin (Avelox), nalidixic acid (NegGram), ofloxacin (Floxin), and sparfloxacin (Zagam) (not available in the U.S.), or any other medications.

Tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, herbal products, and nutritional supplements you are taking or plan to take. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: other antibiotics; anticoagulants ('blood thinners') such as warfarin (Coumadin, Jantoven); certain antidepressants; antipsychotics (medications to treat mental illness); caffeine or medications that contain caffeine (Excedrin, NoDoz, Vivarin, others); cisapride (Propulsid) (not available in the U.S.); clozapine (Clozaril, Fazaclo); cyclosporine (Gengraf, Neoral, Sandimmune); diuretics ('water pills'); erythromycin (E.E.S, E-Mycin, Erythrocin, others); glyburide (DiaBeta, in Glucovance, Micronase, others); certain medications for irregular heartbeat such as amiodarone (Cordarone), procainamide (Procanbid), quinidine, and sotalol (Betapace, Betapace AF, Sorine); nitrofurantoin (Furadantin, Macrobid, Macrodantin); probenecid (in Col-Probenecid, Probalan); nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin, others) and naproxen (Aleve, Naprosyn, others); ropinirole (Requip); tacrine (Cognex); theophylline (Elixophyllin, Theo-24, Uniphyl, others); and tizanidine (Zanaflex). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

If you are taking antacids containing aluminum hydroxide or magnesium hydroxide (Maalox, Mylanta, Tums, others), didanosine (Videx) sucralfate (Carafate), or supplements or multivitamins that contain iron or zinc, take these medications 2 hours before or 2 hours after you take Gyrablock.

Tell your doctor if you or anyone in your family has or has ever had a prolonged QT interval (a rare heart problem that may cause irregular heartbeat, fainting or sudden death) or an irregular heartbeat and if you have or have ever had nerve problems, a low level of potassium in your blood, a slow heartbeat, chest pain, seizures, myasthenia gravis (condition that causes weakness of certain muscles), cerebral arteriosclerosis (narrowing of blood vessels in or near the brain that can lead to stroke or mini-stroke), or glucose-6-phosphate dehydrogenase (G-6PD) deficiency (an inherited blood disorder).

Tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking Gyrablock, call your doctor.

You should know that this medication may cause dizziness, lightheadedness, and tiredness. Do not drive a car, operate machinery, or participate in activities requiring alertness and coordination until you know how Gyrablock affects you.

Plan to avoid unnecessary or prolonged exposure to sunlight or ultraviolet light (tanning beds and sunlamps) and to wear protective clothing, sunglasses, and sunscreen. Gyrablock may make your skin sensitive to sunlight or ultraviolet light. If your skin becomes reddened, swollen, or blistered, call your doctor.


If you overdose Generic Gyrablock and you don't feel good you should visit your doctor or health care provider immediately.


Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F) away from moisture and heat. Keep bottle closed tightly. 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 Gyrablock 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.


You may be taking certain other medicines that should not be taken at the same time as norfloxacin. Avoid taking the following medicines within 2 hours before or after you take norfloxacin. These other medicines can make norfloxacin much less effective when taken at the same time: antacids that contain magnesium or aluminum (such as Maalox, Mylanta, or Rolaids); the ulcer medicine sucralfate (Carafate); didanosine (Videx) powder or chewable tablets; or vitamin or mineral supplements that contain iron or zinc.

Avoid caffeine while you are taking norfloxacin, because the medication can make the effects of caffeine stronger.

Avoid exposure to sunlight or tanning beds. Norfloxacin can make you sunburn more easily. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors. Call your doctor if you have severe burning, redness, itching, rash, or swelling after being in the sun.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, stop taking norfloxacin and call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.

Norfloxacin may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

gyrablock drug

An attempt to induce resistance to ciprofloxacin in vitro was made against clinical and environmental isolates of Pseudomonas aeruginosa. This in vitro manipulation of strains resulted in the increase of minimum inhibitory concentration from 0.4 microg/ml to 1 microg/ml of the original strains to 9.0 to 12.5 microg/ml indicating development of resistance to ciprofloxacin and a major decrease in the size of zone diameters of norfloxacin and ofloxacin indicating cross resistance to these agents. Results indicate the induced resistance to ciprofloxacin can promote development of cross resistance to other fluoroquinolones. This suggests that caution should be taken while using fluoroquinolones for the treatment of Pseudomonas aeruginosa infections.

gyrablock 400 mg cena

Odds ratio for the association between sudden death and exposure to each antibiotic relative to amoxicillin, after adjustment for predictors of sudden death according to a disease risk index.

gyrablock medicine

Quinolones are a family of antibacterial agents that are used extensively in both human and veterinary clinics. Their antibacterial activity is pH-dependent, and therefore an examination of protonation equilibria in quinolone solution is essential. In this work, dissociation constants of quinolones in water were obtained using capillary electrophoresis (CE). The method is based on measuring the electrophoretic mobility of the solute as a function of pH. Mobility and pH data are fitted using different models. These developed equations have two advantages. They permit the determination of pKa of analytes with the advantages of CE and also permit the prediction of the effect of pH on the electrophoretic behaviour of substances and then the prediction of the pH optimum for the separation methods, using the minimum of experimental measurements.

gyrablock 400 mg alkohol

Based on the enhancement of chemiluminescence (CL) of luminol-hydrogen peroxide-gold nanoparticles system by fluoroquinolones (FQs), a novel and rapid CL method is reported for the determination of FQs derivatives. Under the optimum conditions, the CL intensity is proportional to the concentration of FQs derivative in solution. The corresponding linear regression equations are established over the range of 0.08-1.28mug/mL for norfloxacin, 0.013-1.32mug/mL for ciprofloxacin, 0.014-1.4mug/mL for lomefloxacin, 0.029-1.46mug/mL for fleroxacin, 0.02-1.0mug/mL for ofloxacin and 0.01-1.44mug/mL for levofloxacin, respectively. The limits of detection (S/N=3) are 3.2, 9.5, 7.0, 9.0, 8.0, and 8.0ng/mL with the relative standard deviation (n=11) 4.3, 1.5, 1.9, 1.3, 1.6 and 2.1% for norfloxacin, ciprofloxacin, lomefloxacin, fleroxacin, ofloxacin and levofloxacin, respectively. This proposed method has been applied to detect FQs derivatives in human urine successfully.

gyrablock 400 mg dosage

While selective intestinal decontamination (SID) can alter the hyperdynamic circulatory state of cirrhosis, the impact of SID on portal pressure remains unclear especially in the setting of clinically significant portal hypertension.

gyrablock dosage

Retrospective, noncomparative case series.

gyrablock antibiotic

Patients with other bacterial infections had a relatively higher probability of infection with ESBL-producing and fluoroquinolone-resistant Klebsiella strains. The data presented here highlight the alarming state of Klebsiella infection dynamics in the hospital and adjoining communities.

gyrablock tablets

The choice of therapy for Neisseria gonorrhoeae infections is complicated by antibiotic resistance and by the varying efficacy of some antibiotics at different anatomic sites of infection. Ceftriaxone (a single intramuscular dose of 250 mg) is a simple, effective, and generally well-tolerated choice for uncomplicated N. gonorrhoeae infection at all anatomic sites. Alternatives include single-dose oral regimens of ciprofloxacin, norfloxacin, and cefuroxime axetil as well as single-dose intramuscular regimens of spectinomycin, ceftizoxime, and cefotaxime. The addition of doxycycline (100 mg orally twice a day for 7 days) is recommended for presumptive treatment of chlamydial coinfection. Tetracyclines should not be used as sole therapy for gonococcal infection because of gonococcal resistance.

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In a study of lower urinary tract infection in general practice over twelve hundred strains have been isolated. Eight hundred and sixty-six consecutive strains were tested against four quinolone compounds. Sixty-nine per cent of the isolates were Escherichia coli and 15% coagulase-negative staphylococci (mostly Staphylococcus saprophyticus). The diffusion method, according to I.C.S. recommendation, was used and standardized for extrapolation of MIC results. Ciprofloxacin followed by norfloxacin and pefloxacin, was the most active quinolone compound (MIC 0 X 015-2 mg/l) against all strains, including multiresistant ones.

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Acute uncomplicated lower urinary tract infections (UTI) and vulvovaginal candidiasis (VVC) both occur frequently in women. Although VVC is believed to commonly occur after antibiotic therapy, few studies have demonstrated this association. Thus, the aim of the study was to estimate the prevalence of colonization by Candida spp. and VVC after norfloxacin (NOR) use for UTI and the effects on the vaginal microbiota and inflammatory process.

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gyrablock antibiotic 2015-05-15

The in-vitro susceptibilities of 198 isolates of precisely identified Proteeae species to six quinolone antimicrobials were determined. Significant differences in susceptibility patterns among various Proteeae to the quinolones examined were demonstrated. Although Providencia stuartii was found to be the most resistant to quinolones including the very active agent ciprofloxacin, fully speciated Prov. rettgeri were also markedly resistant as well. in contrast Prov. alcalifaciens was extremely sensitive to these agents. Some strains of Proteus penneri were more resistant to the three newer compounds (ciprofloxacin, enoxacin and norfloxacin) than Bemetrazole Tablets strains of Pr. vulgaris suggesting that recognition of this species may be important in surveys of the in-vitro activity of antibiotics. Pr. mirabilis and Morganella morganii were very sensitive to the newer agents. The patterns of resistance seen in the three newer agents were reflected in the older agents acrosoxacin and cinoxacin. Accurate speciation of Proteeae in surveys of susceptibilities to antimicrobial agents is important if misleading results are not to be reported.

gyrablock 400 tablets 2017-06-02

A wide range of pharmaceutical compounds have been identified in the environment, and their presence is a topic of growing concern, both for human and ecological health. Adsorption to aquifer materials and sediments is an important factor influencing the fate and transport of pharmaceutical compounds in the environment. Surfactants and other amphiphiles are known to influence the adsorption of many compounds and may be present in the environment from wastewaters or other sources. The work described here examines the adsorption of four pharmaceutical compounds, acetaminophen, carbamazepine, nalidixic acid, and norfloxacin, in the presence of a natural aquifer material. Adsorption was studied as a function of Azitromicina Suspension 600 Mg pH and in the presence and absence of two surfactants, cetylpyridinium chloride (CPC), a cationic surfactant, and Tergitol NP9, an ethoxylated nonionic surfactant. In the absence of surfactants, results indicate a 1-2 orders of magnitude variation in adsorption affinity with changing pH for each of the two quinolone pharmaceuticals (nalidixic acid and norfloxacin) but no measurable adsorption for carbamazepine or acetaminophen. In the presence of surfactants, adsorption of acetaminophen and carbamazepine was enhanced to extents consistent with compound hydrophobicity, while adsorption of nalidixic acid and norfloxacin was not. At high pH values, the anionic species of nalidixic acid exhibited enhanced adsorption in the presence of the cationic surfactant, CPC.

gyrablock dosage 2017-06-29

Bioassay-directed fractionation Azithromycin Online for Staphylococcus aureus multidrug resistance efflux pump inhibitors resulted in isolation of novel acylated neohesperidosides from Geranium caespitosum. The more highly acylated compounds had no direct activity against S. aureus, but potentiated activity of the antibiotics berberine, rhein, ciprofloxacin and norfloxacin. Cellular concentrations of berberine were greatly increased in the presence of active esters.

gyrablock 400 mg alkohol 2016-03-09

The isolates represented 119 different serotypes. Of all 816 Salmonella strains, 3 (0.4%) were resistant to ciprofloxacin (MIC > or = 4 microg/ml), 232 (28.4%) showed reduced susceptibility to ciprofloxacin (MIC > or = 0.125-2 microg/ml), and Cleocin T Gel Generic 581 (71.2%) were ciprofloxacin-susceptible. The MIC50 and MIC90 values of ciprofloxacin for these strains were 0.032 and 0.25 microg/ml, respectively, being lower than those of the other fluoroquinolone compounds presently on market in Finland (ofloxacin, norfloxacin, levofloxacin, and moxifloxacin). For two newer quinolones, clinafloxacin and sitafloxacin, the MIC50 and MIC90 values were lowest, both 0.016 and 0.064 microg/ml, respectively. Moreover, clinafloxacin and sitafloxacin exhibited the lowest MIC50 and MIC90 values, 0.064 and 0.125 microg/ml, against the 235 Salmonella strains with reduced susceptibility and strains fully resistant to ciprofloxacin.

thuoc gyrablock 400 mg 2016-04-22

The activity of five 4-quinolone agents: norfloxacin, ciprofloxacin, ofloxacin, enoxacin and pefloxacin was tested against 121 distinct clinical bacterial isolates. Ciprofloxacin was the most active agent against Gram-negative bacteria and streptococci and pefloxacin was the most active against staphylococci Ciloxan 3 Mg Szemcsepp . By serial sub-culture in sub-inhibitory concentrations of antibiotic we were able to select resistance in almost all Gram-positive and Gram-negative species, with the exception of Escherichia coli. Resistance to norfloxacin was more readily produced than resistance to the other four agents. There was almost complete cross-resistance among the five agents tested. The proportional increases in MIC were higher in Gram-negative than in Gram-positive organisms.

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A simple new chemiluminescent, CL, method is described for the determination of fluoroquinolones such as: ciprofloxacin (CF), norfloxacin (NF), and ofloxacin (OF). This method is based on the measurement of terbium(iii) emission. This emission follows an energy transfer to the uncomplexed terbium(iii) ions from the excited products of fluoroquinolone oxidations. Under optimum conditions, calibration graphs were obtained for 2 × 10(-8)-2 × 10(-6) mol L(-1) of NF; 3 × 10(-8)-2 × 10(-6) mol L(-1) of CF and 4 × 10(-7)-5 × 10(-5) mol L(-1) of OF. The detection limits are 7 × 10(-9) mol Rapiclav Dosage L(-1) norfloxacin, 1 × 10(-8) mol L(-1) ciprofloxacin and 1.5 × 10(-7) mol L(-1) ofloxacin. The method was successfully applied to the determination of these drugs in pharmaceutical formulations.

gyrablock drug 2017-04-30

Although quinolone antibacterial agents have both phototoxicity and photoallergenicity, the latter's potency has been poorly investigated compared with the former's. Some of the photoallergic chemicals serve as photohaptens, Clindamicina C 300 Mg which lead to T-cell-mediated immune reactions after photobinding to protein by UVA radiation. We examined the photohaptenic potential of fluoroquinolones, including lomefloxacin (LFLX), ciplofloxacin, norfloxacin, ofloxacin, levofloxacin, fleroxacin, enoxacin and sparfloxacin (SPFX). The absorption spectra of the quinolones were altered by UVA irradiation, with an exception of SPFX that seems to be photostable toward UVA. Bovine serum albumin and murine epidermal cells were coupled with these fluoroquinolones other than SPFX by exposure to UVA. Subcutaneous inoculation of fluoroquinolone-photomodified epidermal cells induced and elicited a delayed-type hypersensitivity reaction in mice. However, epidermal cells incubated with LFLX without UVA exposure also induced and elicited a significant hypersensitivity reaction to a lesser degree than LFLX-photomodified epidermal cells. Furthermore, there was cross-reactivity between LFLX-photomodified epidermal cells and simply LFLX-incubated cells. This suggests that cells can be weakly modified with LFLX even in the dark and that UVA irradiation promotes this modification. Our study demonstrated that fluoroquinolones have photohaptenic properties to which their photoallergenicity is probably ascribed.

liek gyrablock 400 mg 2016-04-24

The mean age was 52.2 years. All patients had the characteristic disseminated, punctate, slightly elevated, white epithelial lesions. The denser white lesions could be removed easily after gentle swabbing, and most epithelium remained intact. The 10 cases Uroflox Antibiotic with positive polymerase chain reaction results were all identified to be Vittaforma corneae. The mean number of corneal swabbing was 3.3, and the mean disease resolution time was 6.6 days. No patients had recurrence or loss of visual acuity at last follow-up.

gyrablock 400 mg dosage 2015-01-30

Auricular perichondritis is an uncommon complication following surgery of the external ear. Pseudomonas Amoxicillin 3000 Mg aeruginosa is the most commonly associated pathogen. Presented is a patient with auricular perichondritis successfully treated with norfloxacin, a newly available, orally administered antibiotic with antipseudomonal activity.