Drugs Details

Drugs Info of Gentamicin Pediatric
Drugs Details
  • Drugs Type  : FDA
  • Date : 27th Jan 2015 04:42 am
  • Brand Name : Gentamicin Pediatric
  • Generic Name : Gentamicin Injection, USP (Pediatric)

Gentamicin (gentamicin injection pediatric) sulfate, a water-soluble antibiotic of the aminoglycoside group, is derived from Micromonospora purpurea, an actinomycete.

It has the following structural formula:


Gentamicin sulfate Structural Formula Illustration

Gentamicin (gentamicin injection pediatric) Injection is a sterile, nonpyrogenic, aqueous solution for parenteral administration and is available both with and without preservatives.

Each mL of the preservative free product contains: Gentamicin (gentamicin injection pediatric) sulfate, equivalent to gentamicin (gentamicin injection pediatric) 10 mg; Water for Injection q.s.Sulfuric acid and/or sodium hydroxide may have been added for pH adjustment (3-5.5).

Each mL of the preserved product contains: Gentamicin (gentamicin injection pediatric) sulfate equivalent to gentamicin (gentamicin injection pediatric) 10mg; methylparaben 1.3 mg and propylparaben 0.2 mg as preservatives; sodium metabisulfite 3.2 mg; edetate disodium 0.1mg; Water for Injection q.s. Sulfuric acid and/or sodium hydroxide may have been added for pH adjustment (3.0 to 5.5).

This monograph has been modified to include the generic and brand name in many instances.


To reduce the development of drug-resistant bacteria and maintain the effectiveness of Gentamicin Injection, USP (gentamicin injection pediatric) and other antibacterial drugs, Gentamicin Injection, USP (gentamicin injection pediatric) 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.

Gentamicin (gentamicin injection pediatric) Injection is indicated in the treatment of serious infections caused by susceptible strains of the following microorganisms: Pseudomonas aeruginosa, Proteus species (indole-positive and indole-negative), Escherichia coli, Klebsiella-Enterobacter-Serratia species, Citrobacter species, and Staphylococcus species (coagulase-positive and coagulase-negative).

Clinical studies have shown Gentamicin (gentamicin injection pediatric) Injection to be effective in bacterial neonatal sepsis; bacterial septicemia; and serious bacterial infections of the central nervous system (meningitis), urinary tract, respiratory tract, gastrointestinal tract (including peritonitis), skin, bone and soft tissue (including burns). Aminoglycosides, including gentamicin (gentamicin injection pediatric) , are not indicated in uncomplicated initial episodes of urinary tract infections unless the causative organisms are susceptible to these antibiotics and are not susceptible to antibiotics having less potential for toxicity.

Specimens for bacterial culture should be obtained to isolate and identify causative organisms and to determine their susceptibility to gentamicin (gentamicin injection pediatric) .

Gentamicin (gentamicin injection pediatric) may be considered as initial therapy in suspected or confirmed gram-negative infections, and therapy may be instituted before obtaining results of susceptibility testing. Thedecision to continue therapy with this drug should be based on the results of susceptibility tests, the severity of the infection, and the important additional concepts contained in the WARNINGS box above. If the causative organisms are resistant to gentamicin (gentamicin injection pediatric) , other appropriate therapy should be instituted.

In serious infections when the causative organisms are unknown, gentamicin (gentamicin injection pediatric) may be administered as initial therapy in conjunction with a penicillin-type or cephalosporin type drug before obtaining results of susceptibility testing.If anaerobic organisms are suspected asetiologic agents, consideration should be given to using other suitable antimicrobial therapy in conjunction with gentamicin (gentamicin injection pediatric) . Following identification of the organism and its susceptibility, appropriate antibiotic therapy should then be continued.

Gentamicin (gentamicin injection pediatric) has been used effectively in combination with carbenicillin for the treatment of life-threatening infections caused by Pseudomonas aeruginosa. It has also been found effective when used in conjunction with a penicillin-type drug for the treatment of endocarditis caused by group D streptococci.

Gentamicin (gentamicin injection pediatric) Injection has also been shown to be effective in the treatment of serious staphylococcal infections. While not the antibiotic of first choice, gentamicin (gentamicin injection pediatric) may be considered when penicillins or other less potentially toxic drugs are contraindicated and bacterial susceptibility tests and clinical judgment indicate its use. It may also be considered in mixed infections caused by susceptible strains of staphylococci and gram-negative organisms.

In the neonate with suspected bacterial sepsis or staphylococcal pneumonia, a penicillin-type drug is also usually indicated as concomitant therapy with gentamicin (gentamicin injection pediatric) .

Dosage Administration

Gentamicin (gentamicin injection pediatric) Injection may be given intramuscularly or intravenously. The patient's pretreatment body weight should be obtained for calculation of correct dosage. The dosage of aminoglycosides in obese patients should be based on an estimate of the lean body mass. It is desirable to limit the duration of treatment with aminoglycosides to short term.

Dosage For Patients With Normal Renal Function

Children: 6 to 7.5 mg/kg/day. (2 to 2.5 mg/kg administered every 8 hours.) Infants and Neonates: 7.5 mg/kg/day. (2.5 mg/kg administered every 8 hours.)

Premature or Full-term Neonates One Week of AgeorLess: 5mg/kg/day.(2.5 mg/kg administered every 12 hours.)

It is desirable to measure periodically both peak and trough serum concentrations of gentamicin (gentamicin injection pediatric) when feasible during therapy to assure adequate but not excessive drug levels. For example, the peak concentration (at 30 to 60 minutes after intramuscular injection) is expected to be in the range of 3 to 5 mcg/mL. When monitoring peak concentrations after intra muscular or intravenous administration, dosage should be adjusted so that prolonged levels above12 mcg/mL are avoided. When monitoring trough concentrations (just prior to the next dose), dosage should be adjusted so that levels above 2 mcg/mL are avoided. Determination of the adequacy of a serum level for a particular patient must take into consideration the susceptibility of the causative organism, the severity of the infection, and the status of the patient's host-defense mechanisms.

In patients with extensive burns, altered pharmacokinetics may result in reduced serum concentrations of aminoglycosides. In such patients treated with gentamicin (gentamicin injection pediatric) , measurement of serum concentrations is recommended as a basis for dosage adjustment.

The usual duration of treatment is 7 to10 days. In difficult and complicated infections, a longer course of therapy may be necessary. In such cases monitoring of renal, auditory, and vestibular functions is recommended, since toxicity is more apt to occur with treatment extended for more than 10 days. Dosage should be reduced if clinically indicated.

For Intravenous Administration

The intravenous administration of gentamicin (gentamicin injection pediatric) may be particularly useful for treating patients with bacterial septicemia or those in shock. It may also be the preferred route of administration for some patients with congestive heart failure, hematologic disorders, severe burns, or those with reduced muscle mass.

For intermittent intravenous administration, a single dose of Gentamicin (gentamicin injection pediatric) Injection may be diluted in 0.9% Sodium Chloride Injection or in 5% Dextrose Injection. The solution may be infused over a period of one-half to two hours.

The recommended dosage for intravenous and intramuscular administration is identical.

Gentamicin (gentamicin injection pediatric) Injection should not be physically premixed with other drugs, but should be administered separately in accordance with the recommended route of administration and dosage schedule.

Dosage For Patients With Impaired Renal Function

Dosage must be adjusted in patients with impaired renal function to assure therapeutically adequate but not excessive, blood levels. Whenever possible, serum concentrations of gentamicin (gentamicin injection pediatric) should be monitored. One method of dosage adjustment is to increase the interval between administration of the usual doses. Since the serum creatinine concentration has a high correlation with the serum half-life of gentamicin (gentamicin injection pediatric) , this laboratory test may provide guidance for adjustment of the interval between doses. In adults, the interval between doses (in hours) may be approximated by multiplying the serum creatinine level (mg/100 mL) by 8. For example, a patient weighing 60 kg with a serum creatinine level of 2 mg/100 mL could be given 60 mg (1 mg/kg) every 16 hours (2 x 8). These guidelines may be considered when treating infants and children with serious renal impairment.

In patients with serious systemic infections and renal impairment, it may be desirable to administer the antibiotic more frequently but in reduced dosage. In such patients, serum concentrations of gentamicin (gentamicin injection pediatric) should be measured so that adequate but not excessive levels result.

A peak and trough concentration measured intermittently during therapy will provide optimal guidance for adjusting dosage. After the usual initial dose, a rough guide for determining reduced dosage at eight-hour intervals is to divide the normally recommended dose by the serum creatinine level (Table I). For example, after an initial dose of 20 mg (2 mg/kg), a child weighing10 kg with a serum creatinine level of 2 mg/100 mL could be given 10 mg every eight hours (20 x 2). It should be noted that the status of renal function may be changing over the course of the infectious process. It is important to recognize that deteriorating renal function may require a greater reduction in dosage than that specified in the above guidelines for patients with stable renal impairment.


(mg %)
Clearance Rate
Percent of
Usual Doses
Shown Above
≤ 1 > 100 100
1.1-1.3 70-100 80
1.4-1.6 55-70 65
1.7-1.9 45-55 55
2 -2.2 40-45 50
2.3-2.5 35-40 40
2.6-3.0 30-35 35
3.1-3.5 25-30 30
3.6-4 20-25 25
4.1-5.1 15-20 20
5.2-6.6 10-15 15
6.7-8 < 10 10

In patients with renal failure undergoing hemodialysis, the amount of gentamicin (gentamicin injection pediatric) removed from the blood may vary depending upon several factors including the dialysis method used. An eight-hour hemodialysis may reduce serum concentrations of gentamicin (gentamicin injection pediatric) by approximately 50%. In children, the recommended dose at the end of each dialysis period is 2 to 2.5 mg/kg depending upon the severity of the infection.

The above dosage schedules are not intended as rigid recommendations but are provided as guides to dosage when the measurement of gentamicin (gentamicin injection pediatric) serum levels is not feasible.

A variety of methods are available to measure gentamicin (gentamicin injection pediatric) concentrations in body fluids; these include microbiologic, enzymatic and radio-immunoassay techniques.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

How Supplied

Gentamicin Injection (Pediatric), available preserved or preservative-free, is supplied in 2 mL (20 mg) flip-top vials, in trays of 25.

Product No. NDC No.  
17302 63323-173-02 Gentamicin Injection, USP,10 mg/mL (preservative-free) in a 2 mL (20mg) flip-top singledose vial.
51302 63323-513-02 Gentamicin,10 mg/mL (preserved) in a 2mL (20 mg) flip-top multipledose vial.

Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature].

Abraxis Pharmaceutical Products, Schaumburg, IL 60173. Revised: June 2006. FDA Rev date: 9/7/2000

This monograph has been modified to include the generic and brand name in many instances.

Side Effects


Adverse renal effects, as demonstrated by the presence of casts, cells, or protein in the urine or by rising BUN, NPN, serum creatinine or oliguria, have been reported. They occur more frequently in patients treated for longer periods or with larger dosages than recommended.


Serious adverse effects on both vestibular and auditory branches of the eighth nerve have been reported, primarily in patients with renal impairment (especially if dialysis is required), and in patients on high doses and/or prolonged therapy. Symptoms include dizziness, vertigo, tinnitus, roaring in the ears and hearing loss, which, as with other aminoglycosides, maybeirreversible. Hearing loss is usually manifested initially by diminution of high-tone acuity. Other factors which may increase the risk of toxicity include excessive dosage, dehydration and previous exposure to other ototoxic drugs.

Peripheral neuropathy or encephalopathy, including numbness, skintingling, muscletwitching, convulsions and a myasthenia gravis-like syndrome, have been reported.

Note: The risk of toxic reactions is low in neo-nates,infantsandchildrenwithnormalrenalfunc-tion who do not receive Gentamicin (gentamicin injection pediatric) Injection at higher doses or for longer periods of time than recommended.

Other reported adverse reactions possibly related to gentamicin (gentamicin injection pediatric) include: respiratory depression, lethargy, confusion, depression, visual disturbances, decreased appetite, weightloss, hypotension and hypertension; rash, itching, urticaria, generalized burning, laryngeal edema, anaphylactoid reactions, fever and headache; nausea, vomiting, increased salivation and stomatitis; purpura, pseudotum or cerebri, acute organic brain syndrome, pulmonary fibrosis, alopecia, joint pain, transient hepatomegaly and splenomegaly.

Laboratory abnormalities possibly related to gentamicin (gentamicin injection pediatric) include: increased levels of serum transaminase (SGOT,SGPT), serum LDH and bilirubin, decreased serum calcium, magnesium, sodium and potassium; anemia, leukopenia, granulocytopenia, transient agranulocytosis, eosinophilia, increased and decreased reticulocyte counts and thrombocytopenia. While clinical laboratory test abnormalities may be isolated findings, they may also be associated with clinically related signs and symptoms. For example, tetany and muscle weakness may be associated with hypomagnesemia, hypocalcemia, and hypokalemia.

While local tolerance of Gentamicin (gentamicin injection pediatric) Injection is generally excellent, there has been an occasional report of pain at the injection site. Subcutaneous atrophy or fat necrosis suggesting local irritation has been reported rarely.

Read the Gentamicin Pediatric (gentamicin injection pediatric) Side Effects Center for a complete guide to possible side effects


No information provided.

This monograph has been modified to include the generic and brand name in many instances.


See BOXED WARNINGS.) Aminoglycosides can cause fetal harm when administered to a pregnant woman. Aminoglycoside antibiotics cross the placenta, and there have been several reports of total irreversible bilateral congenital deafness in children whose mothers received streptomycin during pregnancy. Serious side effects to mother, fetus, or new born have not been reported in the treatment of pregnant women with other aminoglycosides. Animal reproduction studies conducted on rats and rabbits did not reveal evidence of impaired fertility or harm to the fetus due to gentamicin (gentamicin injection pediatric) sulfate.

It is not known whether gentamicin (gentamicin injection pediatric) sulfate can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. If gentamicin (gentamicin injection pediatric) is used during pregnancy or if the patient becomes pregnant while taking gentamicin (gentamicin injection pediatric) , she should be apprised of the potential hazard to the fetus.

Preserved Gentamicin (gentamicin injection pediatric) Injection contains sodium metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes incertain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.



Prescribing Gentamicin (gentamicin injection pediatric) Injection 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.

Neurotoxic and nephrotoxic antibiotics may be almost completely absorbed from body surfaces (except the urinary bladder) after local irrigation and after topical application during surgical procedures. The potential toxic effects of antibiotics administered in this fashion (neuromuscular blockade, respiratory paralysis, oto- and nephrotoxicity) should be considered (see BOXED WARNINGS).

Increased nephrotoxicity has been reported following concomitant administration of aminoglycoside antibiotics and cephalosporins.

Neuromuscular blockade and respiratory paralysis have been reported in the cat receiving high doses (40 mg/kg) of gentamicin (gentamicin injection pediatric) . The possibility of these phenomena occurring in man should be considered if aminoglycosides are administered by any route to patients receiving anesthetics, or to patients receiving neuromuscular blocking agents, such as succinylcholine, tubocurarine or decamethonium, or in patients receiving massive transfusions of citrate-anticoagulated blood.If neuromuscular blockade occurs, calcium salts may reverse it.

Aminoglycosides should be used with caution in patients with neuromuscular disorders, such asmyastheniagravis, since these drugs may aggravate muscle weakness because of their potential curare-like effects on the neuromuscular junction. During or following gentamic in therapy, paresthesias, tetany, positive Chvostek and Trousseau signs, and mental confusion have been described in patients with hypomagnesemia, hypocalcemia, and hypokalemia. When this has occurred in infants, tetany and muscle weakness have been described. Both adults and infants required appropriate corrective electrolyte therapy.

A Fanconi-like syndrome, with amino-aciduria andmetabolicacidosis,hasbeenreportedinsome adults and infants being given gentamicin (gentamicin injection pediatric) injections.

Cross-allergenicityamongaminoglycosideshas been demonstrated.

Patients should be well hydrated during treatment.

Although the in vitro mixing of gentamicin (gentamicin injection pediatric) and carbenicillin results in a rapid and significant inactivation of gentamicin (gentamicin injection pediatric) , this interaction has not been demonstrated in patients with normal renal function who received both drugs by different routes of administration. A reductionin gentamicin (gentamicin injection pediatric) serum half-life has been reported in patients with severe renal impairment receiving carbenicillin concomitantly with gentamicin (gentamicin injection pediatric) .

Treatment with gentamicin (gentamicin injection pediatric) may result in overgrowth of nonsusceptible organisms. If this occurs, appropriate therapy is indicated.

Do not administer unless solution is clear and package undamaged.

See BOXED WARNINGS regarding concurrent use of potent diuretics and regarding concurrent and/or sequential use of other neurotoxic and/or nephrotoxic antibiotics and for other essential information.

Pregnancy Category D

See WARNINGS section.

This monograph has been modified to include the generic and brand name in many instances.


In the event of overdose or toxic reactions, hemodialysis may aid in the removal of gentamicin (gentamicin injection pediatric) from the blood, and is especially important if renalfunction is, or becomes, compromised. The rate of removal of gentamicin (gentamicin injection pediatric) is considerably less by peritoneal dialysis than it is by hemodialysis. In the newborn infant, exchange transfusions may also be considered.


Hypersensitivity to gentamicin (gentamicin injection pediatric) is a contraindication to its use. A history of hypersensitivity or serious toxic reactions to other aminoglycosides may contraindicate use of gentamicin (gentamicin injection pediatric) because of the known cross-sensitivity of patients to drugs in this class.

This monograph has been modified to include the generic and brand name in many instances.

Clinical Pharamacology

After intramuscular administration of gentamicin (gentamicin injection pediatric) sulfate, peak serum concentrations usually occur between 30 and 60 minutes and serum levels are measurable for 6 to 8 hours. In infants, a single dose of 2.5 mg/kg usually provides a peak serum level in the range of 3 to 5 mcg/mL.When gentamicin (gentamicin injection pediatric) is administered by intravenous infusion over a two-hour period, the serum concentrations are similar to those obtained by intramuscular administration. Age markedly affects the peak concentrations: in one report, a 1 mg/kg dose produced mean peak concentrations of 1.58, 2.03, and 2.81 mcg/mL in patients six months to five years old, 5to 10 years old, and over10 years old, respectively.

In infants one week to six months of age, the half-life is 3 to 3½ hours. In full-term and large premature infants less than one week old, the approximate serum half-life of gentamicin (gentamicin injection pediatric) is 5½ hours. In small premature infants, the half-life is inversely related to birth weight. In premature infants weighing less than 1500 grams, the half-life is 11½ hours; in those weighing 1500 to 2000 grams, the half-life is eight hours; in those weighing over 2000grams, the half-life is approximately five hours.While some variation is to be expected due to a number of variables such as age, body temperature, surface area and physiologic differences, the individual patient given the same dose tends to have similar levels in repeated determinations.

Gentamicin (gentamicin injection pediatric) , like all aminoglycosides, may accumulate in the serum and tissues of patients treated with higher doses and/or for prolonged periods, particularly in the presence of impaired or immature renal function. In patients with immature or impaired renal function, gentamicin (gentamicin injection pediatric) is cleared from the body more slowly than in patients with normal renal function.The more severe the impairment, the slower the clearance. (Dosage must be adjusted.)

Since gentamicin (gentamicin injection pediatric) is distributed in extracellular fluid, peak serum concentrations may be lower than usual in patients who have a large volume of this fluid. Serum concentrations of gentamicin (gentamicin injection pediatric) in febrile patients may be lower than those in afebrile patients given the same dose. When body temperature returns to normal, serum concentrations of the drug may rise. Febrile and anemic states may be associated with a shorter than usual serum half-life. (Dosage adjustment is usually not necessary.) In severely burned patients, the half-life may be significantly decreased and resultingserumconcentrationsmaybelowerthan anticipated from the mg/kg dose.

Protein-binding studies have indicated that the degree of gentamicin (gentamicin injection pediatric) binding is low, depending upon the methods used for testing, this may be between 0 and 30%.

In neonates less than three days old, approximately 10% of the administered dose is excreted in 12 hours; in infants 5 to 40 days old, approximately 40% is excreted over the same period. Excretion of gentamicin (gentamicin injection pediatric) correlates with postnatal age and creatinine clearance. Thus, with increasing postnatal age and concomitant increase in renal maturity, gentamicin (gentamicin injection pediatric) is excreted more rapidly. Little, ifany, metabolic transformation occurs; the drug is excreted principally by glomerular filtration. After several days of treatment, the amount of gentamicin (gentamicin injection pediatric) excreted in the urine approaches, but does not equal, the daily dose administered. As with other aminoglycosides, a small amount of the gentamicin (gentamicin injection pediatric) dose may be retained in the tissues, especially in the kidneys. Minute quantities of aminoglycosides have been detected in the urine of some patients weeks after drug administration was discontinued. Renal clearance of gentamicin (gentamicin injection pediatric) is similar to that of endogenous creatinine.

In patients with marked impairment of renal function, there is a decrease in the concentration of aminoglycosides in urine and in their penetration into defective renal parenchyma. This decreased drug excretion, together with the potential nephrotoxicity of aminoglycosides, should be considered when treating such patients who have urinary tract infections.

Probenecid does not affect renal tubular transport of gentamicin (gentamicin injection pediatric) .

The endogenous creatinine clearance rate and the serum creatinine level have a high correlation with the half-life of gentamicin (gentamicin injection pediatric) in serum. Results of these tests may serve as guides for adjusting dosage in patients with renalim pairment (see DOSAGE AND ADMINISTRATION).

Following parenteral administration, gentamicin (gentamicin injection pediatric) can be detected in serum, lymph, tissues, sputum, andinpleural, synovial, and peritoneal fluids. Concentrations in renal cortex sometimes may be eight times higher than the usual serum levels. Concentrations in bile, in general, have been low and have suggested minimal biliary excretion. Gentamicin (gentamicin injection pediatric) crosses the peritoneal as well as the placental membranes.Since aminoglycosides diffuse poorly into the subarachnoid space after parenteral administration, concentrations of gentamicin (gentamicin injection pediatric) in cerebrospinal fluid are often low and dependent upon dose, rate of penetration, and degree of meningeal inflammation.There is minimal penetration of gentamicin (gentamicin injection pediatric) into ocular tissues following intramuscular or intravenous administration.


In vitro tests have demonstrated that gentamicin (gentamicin injection pediatric) is a bactericidal antibiotic which acts by inhibiting normal protein synthesis in susceptible microorganisms. It is active against a wide variety of pathogenic bacteria including Escherichia coli, Proteus species, (indole-positive and indole-negative), Pseudomonas aeruginosa, species of the Klebsiella-Enterobacter-Serratia group, Citrobacter species and Staphylococcus species (including penicillin-and methicillin-resistant strains). Gentamicin (gentamicin injection pediatric) is also active in vitro against species of Salmonella and Shigella. The following bacteria are usually resistant to aminoglycosides: Streptococcus pneumoniae, most species of streptococci, particularly group D and anaerobic organisms, such as Bacteroides species or Clostridium species.

In vitro studies have shown that an aminoglycoside combined with an antibiotic that interferes with cell wall synthesis may act synergistically against some group D streptococcal strains. The combination of gentamicin (gentamicin injection pediatric) and penicillin G has a synergistic bactericidal effect against virtually all strains of Streptococcus faecalis and its varieties (S. faecalis var. liquifaciens, S. faecalis var. zymogenes), S. faecium and S. durans. An enhanced killing effect against many of these strains has also been shown in vitro with combinations of gentamicin (gentamicin injection pediatric) and ampicillin, carbenicillin, nafcillin, or oxacillin.

The combined effect of gentamicin (gentamicin injection pediatric) and carbenicillin is synergistic for many strains of Pseudomonas aeruginosa. In vitro synergism against other gram-negative organisms has been shown with combinations of gentamicin (gentamicin injection pediatric) and cephalosporins. Gentamicin (gentamicin injection pediatric) may be active against clinical isolates of bacteria resistant to other aminoglycosides. Bacteria resistant to one aminoglycoside may be resistant to one or more other aminoglycosides. Bacterial resistance to gentamicin (gentamicin injection pediatric) is generally developed slowly.

Susceptibility Testing

If the disc method of susceptibility testing used is that described by Bauer et al. (Am J Clin Path 45:493, 1966; Federal Register 37:20525-20529, 1972), a disc containing 10 mcg of gentamicin (gentamicin injection pediatric) should give a zone of inhibition of 15 mm or more to indicate susceptibility of the infecting organism. Zones of 12 mm or less indicate that the infecting organism is likely to be resistant. Zones of greater than 12 mm and less than 15 mm indicate intermediate susceptibility. In certain conditions it may be desirable to do additional susceptibility testing by the tube or agar dilution method; gentamicin (gentamicin injection pediatric) substance is available for this purpose.

This monograph has been modified to include the generic and brand name in many instances.

Patient Information

Patients should be counseled that antibacterial drugs including Gentamicin (gentamicin injection pediatric) Injection should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When Gentamicin (gentamicin injection pediatric) Injection is prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed. Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by Gentamicin (gentamicin injection pediatric) Injection or other antibacterial drugs in the future.

This monograph has been modified to include the generic and brand name in many instances.

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