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Qumax uses



Qumax film-coated tablets are indicated for the treatment of adults with mild to moderate infections caused by susceptible strains of the designated microorganisms in the conditions listed below: (See Dosage and Administration for specific dosing recommendations.)


Acute Bacterial Exacerbation of Chronic Bronchitis caused by Haemophilus influenzae or Moraxella catarrhalis.Although treatment of infections due to this microorganism in this organ system demonstrated a clinically acceptable overall outcome, efficacy was studied in fewer than 10 infections.



Uncomplicated Urinary Tract Infections caused by Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, or Staphylococcus saprophyticus. (See DOSAGE AND ADMINISTRATION and CLINICAL STUDIES—UNCOMPLICATED CYSTITIS.)

Complicated Urinary Tract Infections caused by Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Citrobacter diversus, or Enterobacter cloacae.

NOTE: In clinical trials with patients experiencing complicated urinary tract infections (UTIs) due to P aeruginosa, 12 of 16 patients had the microorganism eradicated from the urine after therapy with Qumax. None of the patients had concomitant bacteremia. Serum levels of Qumax do not reliably exceed the MIC of Pseudomonas isolates. THE SAFETY AND EFFICACY OF Qumax IN TREATING PATIENTS WITH PSEUDOMONAS BACTEREMIA HAVE NOT BEEN ESTABLISHED.Appropriate culture and susceptibility tests should be performed before antimicrobial treatment in order to isolate and identify microorganisms causing infection and to determine their susceptibility to Qumax. In patients with UTIs, therapy with Qumax film-coated tablets may be initiated before results of these tests are known; once these results become available, appropriate therapy should be continued. In patients with an acute bacterial exacerbation of chronic bronchitis, therapy should not be started empirically with Qumax when there is a probability the causative pathogen is S pneumoniae.Beta-lactamase production should have no effect on Qumax activity.

Prevention / prophylaxis

Qumax is indicated preoperatively for the prevention of infection in the following situations:

Efficacy in decreasing the incidence of infections other than urinary tract infection has not been established. Qumax, like all drugs for prophylaxis of transurethral surgical procedures, usually should not be used in minor urologic procedures for which prophylaxis is not indicated (eg, simple cystoscopy or retrograde pyelography). (See Dosage and Administration.)To reduce the development of drug-resistant bacteria and maintain the effectiveness of Qumax and other antibacterial drugs, Qumax 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.


Qumax (lomefloxacin HCl) is contraindicated in persons with a history of hypersensitivity to Qumax or any member of the quinolone group of antimicrobial agents.



These phototoxic reactions have occurred with and without the use of sunscreens or sunblocks. Single doses of Qumax have been associated with these types of reactions. In a few cases, recovery was prolonged for several weeks. As with some other types of phototoxicity, there is the potential for exacerbation of the reaction on re-exposure to sunlight or artificial ultraviolet light prior to complete recovery from the reaction. In rare cases, reactions have recurred up to several weeks after stopping Qumax therapy.EXPOSURE TO DIRECT OR INDIRECT SUNLIGHT (EVEN WHEN USING SUNSCREENS OR SUNBLOCKS) SHOULD BE AVOIDED WHILE TAKING Qumax AND FOR SEVERAL DAYS FOLLOWING THERAPY. Qumax THERAPY SHOULD BE DISCONTINUED IMMEDIATELY AT THE FIRST SIGNS OR SYMPTOMS OF PHOTOTOXICITY. RISK OF PHOTOTOXICITY MAY BE REDUCED BY TAKING Qumax IN THE EVENING THE SAFETY AND EFFICACY OF Qumax IN PEDIATRIC PATIENTS AND ADOLESCENTS (UNDER THE AGE OF 18 YEARS), PREGNANT WOMEN, AND LACTATING WOMEN HAVE NOT BEEN ESTABLISHED. (See PRECAUTIONS—Pediatric Use, Pregnancy and Nursing Mothers subsections.) The oral administration of multiple doses of Qumax to juvenile dogs at 0.3 times and to rats at 5.4 times the recommended adult human dose based on mg/m2 (0.6 and 34 times the recommended adult human dose based on mg/kg, respectively) caused arthropathy and lameness. Histopathologic examination of the weight-bearing joints of these animals revealed permanent lesions of the cartilage. Other quinolones also produce erosions of cartilage of weight-bearing joints and other signs of arthropathy in juvenile animals of various species. (See Animal Pharmacology.)Convulsions have been reported in patients receiving Qumax. Whether the convulsions were directly related to Qumax administration has not yet been established. However, convulsions, increased intracranial pressure, and toxic psychoses have been reported in patients receiving other quinolones. Nevertheless, Qumax has been associated with a possible increased risk of seizures compared to other quinolones. Some of these may occur with a relative absence of predisposing factors. Quinolones may also cause central nervous system (CNS) stimulation, which may lead to tremors, restlessness, lightheadedness, confusion, and hallucinations. If any of these reactions occurs in patients receiving Qumax, the drug should be discontinued and appropriate measures instituted. However, until more information becomes available, Qumax, like all other quinolones, should be used with caution in patients with known or suspected CNS disorders, such as severe cerebral arteriosclerosis, epilepsy, or other factors that predispose to seizures. (See Adverse Reactions.) Psychiatric disturbances, agitation, anxiety, and sleep disorders may be more common with Qumax than other products in the quinolone class. The safety and efficacy of Qumax in the treatment of acute bacterial exacerbation of chronic bronchitis due to S pneumoniae have not been demonstrated. This product should not be used empirically in the treatment of acute bacterial exacerbation of chronic bronchitis when it is probable that S pneumoniae is a causative pathogen. In clinical trials of complicated UTIs due to P aeruginosa, 12 of 16 patients had the microorganism eradicated from the urine after therapy with Qumax. No patients had concomitant bacteremia. Serum levels of Qumax do not reliably exceed the MIC of Pseudomonas isolates. THE SAFETY AND EFFICACY OF Qumax IN TREATING PATIENTS WITH PSEUDOMONAS BACTEREMIA HAVE NOT BEEN ESTABLISHED.Serious and occasionally fatal hypersensitivity (anaphylactoid or anaphylactic) reactions, some following the first dose, have been reported in patients receiving quinolone therapy. Some reactions were accompanied by cardiovascular collapse, loss of consciousness, tingling, pharyngeal or facial edema, dyspnea, urticaria, or itching. Only a few of these patients had a history of previous hypersensitivity reactions. Serious hypersensitivity reactions have also been reported following treatment with Qumax. If an allergic reaction to Qumax occurs, discontinue the drug. Serious acute hypersensitivity reactions may require immediate emergency treatment with epinephrine. Oxygen, intravenous fluids, antihistamines, corticosteroids, pressor amines, and airway management, including intubation, should be administered as indicated.Pseudomembranous colitis has been reported with nearly all antibacterial agents, including Qumax, and may range from mild to life-threatening in severity. Therefore, it is important to consider this diagnosis in patients who present with diarrhea subsequent to the administration of antibacterial agents. Treatment with antimicrobial agents alters the normal flora of the colon and may permit overgrowth of clostridia. Studies indicate that a toxin produced by Clostridium difficile is a primary cause of "antibiotic-associated colitis." After the diagnosis of pseudomembranous colitis has been established, therapeutic measures should be initiated. Mild cases of pseudomembranous colitis usually respond to discontinuation of drug alone. In moderate to severe cases, consideration should be given to management with fluids and electrolytes, protein supplementation, and treatment with an antibacterial drug clinically effective against C difficile colitis.

QT interval prolongation/torsades de pointes

Rare cases of torsades de pointes have been spontaneously reported during post-marketing surveillance in patients receiving quinolones, including Qumax. These rare cases were associated with one or more of the following factors: age over 60, female gender, underlying cardiac disease, and/or use of multiple medications. Qumax should be avoided in patients with known prolongation of the QT interval, patients with uncorrected hypokalemia, and patients receiving class IA (quinidine, procainamide), or class III (amiodarone, sotalol) antiarrhythmic agents.

Peripheral neuropathy

Rare cases of sensory or sensorimotor axonal polyneuropathy affecting small and/or large axons resulting in paresthesias, hypoesthesias, dysesthesias and weakness have been reported in patients receiving quinolones, including Qumax. Qumax should be discontinued if the patient experiences symptoms of neuropathy including pain, burning, tingling, numbness, and/or weakness, or is found to have deficits in light touch, pain, temperature, position sense, vibratory sensation, and/or motor strength in order to prevent the development of an irreversible condition.

Tendon effects

Ruptures of the shoulder, hand, Achilles tendon or other tendons that required surgical repair or resulted in prolonged disability have been reported in patients receiving quinolones, including Qumax. Postmarketing surveillance reports indicate that this risk may be increased in patients receiving concomitant corticosteroids, especially the elderly. Qumax should be discontinued if the patient experiences pain, inflammation, or rupture of a tendon. Patients should rest and refrain from exercise until the diagnosis of tendonitis or tendon rupture has been excluded. Tendon rupture can occur during or after therapy with quinolones, including Qumax.




Alteration of the dosage regimen is recommended for patients with impairment of renal function. (See Dosage and Administration.)

Prescribing Qumax in the absence of a proven or strongly suspected bacterial infection or a prophylactic indication is unlikely to provide benefit to the patient and increases the risk of the development of drug-resistant bacteria.

Information for patients

Patients should be advised

Drug interactions


In three pharmacokinetic studies including 46 normal, healthy subjects, theophylline clearance and concentration were not significantly altered by the addition of Qumax. In clinical studies where patients were on chronic theophylline therapy, Qumax had no measurable effect on the mean distribution of theophylline concentrations or the mean estimates of theophylline clearance. Though individual theophylline levels fluctuated, there were no clinically significant symptoms of drug interaction.

Antacids and sucralfate

Sucralfate and antacids containing magnesium or aluminum, as well as formulations containing divalent and trivalent cations such as Videx®, chewable/buffered tablets or the pediatric powder for oral solution can form chelation complexes with Qumax and interfere with its bioavailability. Sucralfate administered 2 hours before Qumax resulted in a slower absorption (mean Cmax decreased by 30% and mean Tmax increased by 1 hour) and a lesser extent of absorption (mean AUC decreased by approximately 25%). Magnesium- and aluminum-containing antacids, administered concomitantly with Qumax, significantly decreased the bioavailability (48%) of Qumax. Separating the doses of antacid and Qumax minimizes this decrease in bioavailability; therefore, administration of these agents should precede Qumax dosing by 4 hours or follow Qumax dosing by at least 2 hours.


Two hundred mg of caffeine (equivalent to 1 to 3 cups of American coffee) was administered to 16 normal, healthy volunteers who had achieved steady-state blood concentrations of Qumax after being dosed at 400 mg qd. This did not result in any statistically or clinically relevant changes in the pharmacokinetic parameters of either caffeine or its major metabolite, paraxanthine. No data are available on potential interactions in individuals who consume greater than 200 mg of caffeine per day or in those, such as the geriatric population, who are generally believed to be more susceptible to the development of drug-induced CNS-related adverse effects. Other quinolones have demonstrated moderate to marked interference with the metabolism of caffeine, resulting in a reduced clearance, a prolongation of plasma half-life, and an increase in symptoms that accompany high levels of caffeine.


Cimetidine has been demonstrated to interfere with the elimination of other quinolones. This interference has resulted in significant increases in half-life and AUC. The interaction between Qumax and cimetidine has not been studied.


Elevated serum levels of cyclosporine have been reported with concomitant use of cyclosporine with other members of the quinolone class. Interaction between Qumax and cyclosporine has not been studied.


No clinically significant changes in Qumax pharmacokinetics were observed when a single dose of Qumax 400 mg was given after multiple doses of omeprazole (20 mg qd) in 13 healthy volunteers. Changes in omeprazole pharmacokinetics were not studied.


No significant differences were observed in mean phenytoin AUC, Cmax, Cmin or Tmax (although Cmax increased by 11%) when extended phenytoin sodium capsules (100 mg tid) were coadministered with Qumax (400 mg qd) for five days in 15 healthy males. Qumax is unlikely to have a significant effect on phenytoin metabolism.


Probenecid slows the renal elimination of Qumax. An increase of 63% in the mean AUC and increases of 50% and 4%, respectively, in the mean Tmax and mean Cmax were noted in 1 study of 6 individuals.


No clinically significant changes occurred in heart rate or corrected QT intervals, or in terfenadine metabolite or Qumax pharmacokinetics, during concurrent administration of Qumax and terfenadine at steady-state in 28 healthy males.


Quinolones may enhance the effects of the oral anticoagulant, warfarin, or its derivatives. When these products are administered concomitantly, prothrombin or other suitable coagulation tests should be monitored closely. However, no clinically or statistically significant differences in prothrombin time ratio or warfarin enantiomer pharmacokinetics were observed in a small study of 7 healthy males who received both warfarin and Qumax under steady-state conditions.

Carcinogenesis, mutagenesis, impairment of fertility


Hairless mice were exposed to UVA light for 3.5 hours five times every two weeks for up to 52 weeks while concurrently being administered Qumax. The Qumax doses used in this study caused a phototoxic response. In mice treated with both UVA and Qumax concomitantly, the time to development of skin tumors was 16 weeks. In mice treated concomitantly in this model with both UVA and other quinolones, the times to development of skin tumors ranged from 28 to 52 weeks.

Ninety-two percent (92%) of the mice treated concomitantly with both UVA and Qumax developed well-differentiated squamous cell carcinomas of the skin. These squamous cell carcinomas were nonmetastatic and were endophytic in character. Two-thirds of these squamous cell carcinomas contained large central keratinous inclusion masses and were thought to arise from the vestigial hair follicles in these hairless animals. In this model, mice treated with Qumax alone did not develop skin or systemic tumors. There are no data from similar models using pigmented mice and/or fully haired miceThe clinical significance of these findings to humans is unknown.


One in vitro mutagenicity test (CHO/HGPRT assay) was weakly positive at Qumax concentrations ≥ 226 µg/mL and negative at concentrations < 226 µg/mL. Two other in vitro mutagenicity tests (chromosomal aberrations in Chinese hamster ovary cells, chromosomal aberrations in human lymphocytes) and two in vivo mouse micronucleus mutagenicity tests were all negative.

Impairment of fertility

Qumax did not affect the fertility of male and female rats at oral doses up to 8 times the recommended human dose based on mg/m2.


Teratogenic effects. Pregnancy Category C

Reproductive function studies have been performed in rats at doses up to 8 times the recommended human dose based on mg/m2, and no impaired fertility or harm to the fetus was reported due to Qumax. Increased incidence of fetal loss in monkeys has been observed at approximately 3 to 6 times the recommended human dose based on mg/m2 (6 to 12 times the recommended human dose based on mg/kg). No teratogenicity has been observed in rats and monkeys at up to 16 times the recommended human dose exposure. In the rabbit, maternal toxicity and associated fetotoxicity, decreased placental weight, and variations of the coccygeal vertebrae occurred at doses 2 times the recommended human exposure based on mg/m2. There are, however, no adequate and well-controlled studies in pregnant women. Qumax should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Nursing mothers

It is not known whether Qumax is excreted in human milk. However, it is known that other drugs of this class are excreted in human milk and that Qumax is excreted in the milk of lactating rats. Because of the potential for serious adverse reactions from Qumax in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Pediatric use

The safety and effectiveness of Qumax in pediatric patients and adolescents less than 18 years of age have not been established. Qumax causes arthropathy in juvenile animals of several species.

Geriatric use

Of the total number of subjects in clinical studies of Qumax, 25% were ≥ 65 years and 9% were ≥ 75 years. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. (See Clinical Pharmacology — Pharmacokinetics in the geriatric population.)



In clinical trials, most of the adverse events reported were mild to moderate in severity and transient in nature. During these clinical investigations, 5,623 patients received Qumax. In 2.2% of the patients, Qumax was discontinued because of adverse events, primarily involving the gastrointestinal system, skin (0.7%), or CNS (0.5%).

Adverse clinical events

The events with the highest incidence (≥ 1%) in patients, regardless of relationship to drug, were headache (3.6%), nausea (3.5%), photosensitivity (2.3%) [see Warnings], dizziness (2.1%), diarrhea (1.4%), and abdominal pain (1.2%).

Additional clinical events reported in < 1% of patients treated with Qumax, regardless of relationship to drug, are listed below:Autonomic: increased sweating, dry mouth, flushing, syncope.Body as a whole: fatigue, back pain, malaise, asthenia, chest pain, face edema, hot flashes, influenza-like symptoms, edema, chills, allergic reaction, anaphylactoid reaction, decreased heat tolerance.Cardiovascular: tachycardia, hypertension, hypotension, myocardial infarction, angina pectoris, cardiac failure, bradycardia, arrhythmia, phlebitis, pulmonary embolism, extrasystoles, cerebrovascular disorder, cyanosis, cardiomyopathy.Central and peripheral nervous system: tremor, vertigo, paresthesias, twitching, hypertonia, convulsions, hyperkinesia, coma.Gastrointestinal: dyspepsia, vomiting, flatulence, constipation, gastrointestinal bleeding, dysphagia, stomatitis, tongue discoloration, gastrointestinal inflammation.Hearing: earache, tinnitus.Hematologic: purpura, lymphadenopathy, thrombocythemia, anemia, thrombocytopenia, increased fibrinolysis. Hepatic: abnormal liver function.Metabolic: thirst, hyperglycemia, hypoglycemia, gout. Musculoskeletal: arthralgia, myalgia, leg cramps. Ophthalmologic: abnormal vision, conjunctivitis, photophobia, eye pain, abnormal lacrimation.Psychiatric: insomnia, nervousness, somnolence, anorexia, depression, confusion, agitation, increased appetite, depersonalization, paranoid reaction, anxiety, paroniria, abnormal thinking, concentration impairment. Reproductive system: Female: vaginal moniliasis, vaginitis, leukorrhea, menstrual disorder, perineal pain, intermenstrual bleeding. Male: epididymitis, orchitis. Resistance mechanism: viral infection, moniliasis, fungal infection.Respiratory: respiratory infection, rhinitis, pharyngitis, dyspnea, cough, epistaxis, bronchospasm, respiratory disorder, increased sputum, stridor, respiratory depression. Skin/Allergic: pruritus, rash, urticaria, skin exfoliation, bullous eruption, eczema, skin disorder, acne, skin discoloration, skin ulceration, angioedema. (See also Body as a whole.) Special senses: taste perversion.Urinary: hematuria, micturition disorder, dysuria, strangury, anuria.

Adverse laboratory events

Changes in laboratory parameters, listed as adverse events, without regard to drug relationship include:

Hematologic: monocytosis, eosinophilia (0.1%), leukopenia (0.1%), leukocytosis (0.1%). Renal: elevated BUN (0.1%), decreased potassium (0.1%), increased creatinine (0.1%).Hepatic: elevations of ALT (SGPT) (0.4%), AST (SGOT) (0.3%), bilirubin (0.1%), alkaline phosphatase (0.1%).Additional laboratory changes occurring in < 0.1% in the clinical studies included: elevation of serum gamma glutamyl transferase, decrease in total protein or albumin, prolongation of prothrombin time, anemia, decrease in hemoglobin, thrombocythemia, thrombocytopenia, abnormalities of urine specific gravity or serum electrolytes, increased albumin, elevated ESR, albuminuria, macrocytosis.

Post-Marketing Adverse Events

Post-marketing adverse events

Adverse events reported from worldwide marketing experience with Qumax are: anaphylaxis, cardiopulmonary arrest, laryngeal or pulmonary edema, ataxia, cerebral thrombosis, hallucinations, painful oral mucosa, pseudomembranous colitis, hemolytic anemia, hepatitis, tendinitis, diplopia, photophobia, phobia, exfoliative dermatitis, hyperpigmentation, Stevens-Johnson syndrome, toxic epidermal necrolysis, dysgeusia, interstitial nephritis, polyuria, renal failure, urinary retention, and vasculitis.

Quinolone-class adverse events

Additional quinolone-class adverse events include: peripheral neuropathy, torsades de pointes, erythema nodosum, hepatic necrosis, possible exacerbation of myasthenia gravis, dysphasia, nystagmus, intestinal perforation, manic reaction, renal calculi, acidosis and hiccough.

Laboratory adverse events include: agranulocytosis, elevation of serum triglycerides, elevation of serum cholesterol, elevation of blood glucose, elevation of serum potassium, albuminuria, candiduria, and crystalluria.



Information on overdosage in humans is limited. In the event of acute overdosage, the stomach should be emptied by inducing vomiting or by gastric lavage, and the patient should be carefully observed and given supportive treatment. Adequate hydration must be maintained. Hemodialysis or peritoneal dialysis is unlikely to aid in the removal of Qumax as < 3% is removed by these modalities.

Clinical signs of acute toxicity in rodents progressed from salivation to tremors, decreased activity, dyspnea, and clonic convulsions prior to death. These signs were noted in rats and mice as Qumax doses were increased.


Qumax may be taken without regard to meals. Sucralfate and antacids containing magnesium or aluminum, or Videx® (didanosine), chewable/buffered tablets or the pediatric powder for oral solution should not be taken within 4 hours before or 2 hours after taking Qumax. Risk of reaction to solar UVA light may be reduced by taking Qumax at least 12 hours before exposure to the sun (eg, in the evening). (See Clinical Pharmacology.)

See Indications and Usage for information on appropriate pathogens and patient populations.


Patients with normal renal function

The recommended daily dose of Qumax is described in the following chart:





Acute bacterial exacerbation of chronic bronchitis400 mgqd10 days400 mg
Uncomplicated cystitis in females caused by E coli400 mgqd3 days400 mg
Uncomplicated cystitis caused by K pneumoniae, P mirabilis, or S Saprophyticus400 mgqd10 days400 mg
Complicated UTI400 mgqd14 days400 mg

Elderly patients

No dosage adjustment is needed for elderly patients with normal renal function (ClCr≥ 40 mL/min/1.73 m2).

Patients with impaired renal function

Qumax is primarily eliminated by renal excretion. Modification of dosage is recommended in patients with renal dysfunction. In patients with a creatinine clearance > 10 mL/min/1.73 m2 but < 40 mL/min/1.73 m2, the recommended dosage is an initial loading dose of 400 mg followed by daily maintenance doses of 200 mg (1/2 tablet) once daily for the duration of treatment. It is suggested that serial determinations of Qumax levels be performed to determine any necessary alteration in the appropriate next dosing interval.

If only the serum creatinine is known, the following formula may be used to estimate creatinine clearance. Men:                              (weight in kg) × (140 – age)

                                      (72) × serum creatinine (mg/dL)Women:                         (0.85) × (calculated value for men)

Dialysis patients

Hemodialysis removes only a negligible amount of Qumax (3% in 4 hours). Hemodialysis patients should receive an initial loading dose of 400 mg followed by daily maintenance doses of 200 mg (1/2 tablet) once daily for the duration of treatment.

Patients with cirrhosis

Cirrhosis does not reduce the nonrenal clearance of Qumax. The need for a dosage reduction in this population should be based on the degree of renal function of the patient and on the plasma concentrations.

Prevention / prophylaxis

The recommended dose of Qumax is described in the following chart:

ProcedureDoseOral Administration
Transrectal prostate biopsy400 mg

single dose

1–6 hours prior to


Transurethral surgical proceduresWhen preoperative prophylaxis is considered appropriate.400 mg

single dose

2–6 hours prior to



Qumax (lomefloxacin HCl) is supplied as a scored, film-coated tablet containing the equivalent of 400 mg of Qumax base present as the hydrochloride. The tablet is oval, white, and film-coated with "MAXAQUIN 400" debossed on one side and scored on the other side and is supplied in:

NDC NumberSize
0025-5501-01bottle of 20

Store at 59° to 77°F (15° to 25°C).


In three controlled clinical studies of uncomplicated cystitis in females, two performed in the United States and one in Canada, Qumax was compared to other oral antimicrobial agents. In these studies, using very strict evaluability criteria and microbiological criteria at 5–9 days posttherapy follow-up, the following bacterial eradication outcomes were obtained:



3-Day Treatment


3-Day Treatment


3-Day Treatment



10-Day Treatment

E coli133/135 36/39 (92%)65/67 (97%)33/34 (97%)
K pneumoniae7/7 (100%)2/2 (100%)4/4 (100%)2/2 (100%)
P mirabilis8/8 (100%)1/1 (100%)2/2 (100%)1/1 (100%)
S saprophyticus11/11 (100%)3/3 (100%)1/1 (100%)0/0


In a controlled clinical study of uncomplicated cystitis performed in Sweden, Qumax 3-day treatment was compared with Qumax 7-day treatment and norfloxacin 7-day treatment. In this study, using very strict evaluability criteria and microbiological criteria at 5–9 days post-therapy follow-up, the following bacterial eradication outcomes were obtained:


3-Day Treatment


7-Day Treatment


7-Day Treatment

E coli101/109 (93%)102/104 (98%)108/110 (98%)
K pneumoniae2/2 (100%)5/5 (100%)1/1 (100%)
P mirabilis0/06/6 (100%)4/4 (100%)
S saprophyticus11/17 (65%)23/23 (100%)16/16 (100%)


Qumax and other quinolones have been shown to cause arthropathy in juvenile animals. Arthropathy, involving multiple diarthrodial joints, was observed in juvenile dogs administered Qumax at doses as low as 4.5 mg/kg for 7 to 8 days (0.3 times the recommended human dose based on mg/m2 or 0.6 times the recommended human dose based on mg/kg). In juvenile rats, no changes were observed in the joints with doses up to 91 mg/kg for 7 days (2 times the recommended human dose based on mg/m2 or 11 times the recommended human dose based on mg/kg). (See Warnings.)

In a 13-week oral rat study, gamma globulin decreased when Qumax was administered at less than the recommended human exposure. Beta globulin decreased when Qumax was administered at 0.6 to 2 times the recommended human dose based on mg/m2. The A/G ratio increased when Qumax was administered at 6 to 20 times the human dose. Following a 4-week recovery period, beta globulins in the females and A/G ratios in the females returned to control values. Gamma globulin values in the females and beta and gamma globulins and A/G ratios in the males were still statistically significantly different from control values. No effects on globulins were seen in oral studies in dogs or monkeys in the limited number of specimens collected. Twenty-seven NSAIDs, administered concomitantly with Qumax, were tested for seizure induction in mice at approximately 2 times the recommended human dose based on mg/m2. At a dose of Qumax equivalent to the recommended human exposure based on mg/m2 (10 times the human dose based on mg/kg), only fenbufen, when coadministered, produced an increase in seizures. Crystalluria and ocular toxicity, seen with some related quinolones, were not observed in any lomefloxacin-treated animals, either in studies designed to look for these effects specifically or in subchronic and chronic toxicity studies in rats, dogs, and monkeys. Long-term, high-dose systemic use of other quinolones in experimental animals has caused lenticular opacities; however, this finding was not observed with Qumax.


Rx only


Qumax pharmaceutical active ingredients containing related brand and generic drugs:

Active ingredient is the part of the drug or medicine which is biologically active. This portion of the drug is responsible for the main action of the drug which is intended to cure or reduce the symptom or disease. The other portions of the drug which are inactive are called excipients; there role is to act as vehicle or binder. In contrast to active ingredient, the inactive ingredient's role is not significant in the cure or treatment of the disease. There can be one or more active ingredients in a drug.

Qumax available forms, composition, doses:

Form of the medicine is the form in which the medicine is marketed in the market, for example, a medicine X can be in the form of capsule or the form of chewable tablet or the form of tablet. Sometimes same medicine can be available as injection form. Each medicine cannot be in all forms but can be marketed in 1, 2, or 3 forms which the pharmaceutical company decided based on various background research results.
Composition is the list of ingredients which combinedly form a medicine. Both active ingredients and inactive ingredients form the composition. The active ingredient gives the desired therapeutic effect whereas the inactive ingredient helps in making the medicine stable.
Doses are various strengths of the medicine like 10mg, 20mg, 30mg and so on. Each medicine comes in various doses which is decided by the manufacturer, that is, pharmaceutical company. The dose is decided on the severity of the symptom or disease.

Qumax destination | category:

Destination is defined as the organism to which the drug or medicine is targeted. For most of the drugs what we discuss, human is the drug destination.
Drug category can be defined as major classification of the drug. For example, an antihistaminic or an antipyretic or anti anginal or pain killer, anti-inflammatory or so.

Qumax Anatomical Therapeutic Chemical codes:

A medicine is classified depending on the organ or system it acts [Anatomical], based on what result it gives on what disease, symptom [Therapeutical], based on chemical composition [Chemical]. It is called as ATC code. The code is based on Active ingredients of the medicine. A medicine can have different codes as sometimes it acts on different organs for different indications. Same way, different brands with same active ingredients and same indications can have same ATC code.

Qumax pharmaceutical companies:

Pharmaceutical companies are drug manufacturing companies that help in complete development of the drug from the background research to formation, clinical trials, release of the drug into the market and marketing of the drug.
Researchers are the persons who are responsible for the scientific research and is responsible for all the background clinical trials that resulted in the development of the drug.



  1. "lomefloxacin". https://pubchem.ncbi.nlm.nih.gov/co... (accessed August 28, 2018).
  2. "lomefloxacin". http://www.drugbank.ca/drugs/DB0097... (accessed August 28, 2018).
  3. "lomefloxacin: Link to the compound information in Wikipedia.". https://en.wikipedia.org/wiki/Lomef... (accessed August 28, 2018).

Frequently asked Questions

Can i drive or operate heavy machine after consuming Qumax?

Depending on the reaction of the Qumax after taken, if you are feeling dizziness, drowsiness or any weakness as a reaction on your body, Then consider Qumax not safe to drive or operate heavy machine after consumption. Meaning that, do not drive or operate heavy duty machines after taking the capsule if the capsule has a strange reaction on your body like dizziness, drowsiness. As prescribed by a pharmacist, it is dangerous to take alcohol while taking medicines as it exposed patients to drowsiness and health risk. Please take note of such effect most especially when taking Primosa capsule. It's advisable to consult your doctor on time for a proper recommendation and medical consultations.

Is Qumax addictive or habit forming?

Medicines are not designed with the mind of creating an addiction or abuse on the health of the users. Addictive Medicine is categorically called Controlled substances by the government. For instance, Schedule H or X in India and schedule II-V in the US are controlled substances.

Please consult the medicine instruction manual on how to use and ensure it is not a controlled substance.In conclusion, self medication is a killer to your health. Consult your doctor for a proper prescription, recommendation, and guidiance.



sdrugs.com conducted a study on Qumax, and the result of the survey is set out below. It is noteworthy that the product of the survey is based on the perception and impressions of the visitors of the website as well as the views of Qumax consumers. We, as a result of this, advice that you do not base your therapeutic or medical decisions on this result, but rather consult your certified medical experts for their recommendations.

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