Ofloxacin Ophthalmic Solution Usp, 0.3%

Ofloxacin Ophthalmic Solution Usp, 0.3%
SPL v2
SPL
SPL Set ID ff9776b3-a244-e1ea-e053-6294a90aeb7b
Route
OPHTHALMIC
Published
Effective Date 2024-08-05
Document Type 34391-3 HUMAN PRESCRIPTION DRUG LABEL

Drug Facts

Composition & Product

Active Ingredients
Ofloxacin (3 mg)
Inactive Ingredients
Benzalkonium Chloride Hydrochloric Acid Sodium Chloride Sodium Hydroxide Water

Identifiers & Packaging

Marketing Status
ANDA Active Since 2022-12-07

Description

Ofloxacin ophthalmic solution USP, 0.3% is a sterile ophthalmic solution. It is a fluorinated carboxyquinolone anti-infective for topical ophthalmic use.

Indications and Usage

Ofloxacin ophthalmic solution is indicated for the treatment of infections caused by susceptible strains of the following bacteria in the conditions listed below: *Efficacy for this organism was studied in fewer than 10 infections CONJUNCTIVITIS:        Gram-positive bacteria:        Gram-negative bacteria:                Staphylococcus aureus                Enterobacter cloacae                Staphylococcus epidermidis                Haemophilus influenzae                Streptococcus pneumoniae                Proteus mirabilis                  Pseudomonas aeruginosa CORNEAL ULCERS:        Gram-positive bacteria:        Gram-negative bacteria:                Staphylococcus aureus                Pseudomonas aeruginosa                Staphylococcus epidermidis                Serratia marcescens*                Streptococcus pneumoniae        Anaerobic species:                Propionibacterium acnes

Dosage and Administration

The recommended dosage regimen for the treatment of bacterial conjunctivitis is: Days 1 and 2 Instill one to two drops every two to four hours in the affected eye(s). Days 3 through 7 Instill one to two drops four times daily. The recommended dosage regimen for the treatment of bacterial corneal ulcer is: Days 1 and 2 Instill one to two drops into the affected eye every 30 minutes, while awake. Awaken at approximately four and six hours after retiring and instill one to two drops. Days 3 through 7 to 9 Instill one to two drops hourly, while awake. Days 7 to 9 through treatment completion Instill one to two drops, four times daily.

Contraindications

Ofloxacin ophthalmic solution is contraindicated in patients with a history of hypersensitivity to ofloxacin, to other quinolones, or to any of the components in this medication ( see Warnings) .

Drug Interactions

Specific drug interaction studies have not been conducted with ofloxacin ophthalmic solution. However, the systemic administration of some quinolones has been shown to elevate plasma concentrations of theophylline, interfere with the metabolism of caffeine, and enhance the effects of the oral anticoagulant warfarin and its derivatives, and has been associated with transient elevations in serum creatinine in patients receiving cyclosporine concomitantly.

How Supplied

Ofloxacin Ophthalmic Solution, USP 0.3% is supplied sterile in white LDPE plastic bottles and white dropper tips with tan high density poly ethylene (HDPE) caps as follows: 5 mL in 10 mL bottle -NDC 68071-3448-5 Note: Store at 20ºC to 25ºC (68ºF to 77ºF) [see USP Controlled Room Temperature]. Rx only Manufactured for: Lifestar Pharma LLC 1200 MacArthur Blvd. Mahwah, NJ 07430 USA Product of Spain All trademarks are the property of their respective owners. Revised: March 2023, V-04


Medication Information

Indications and Usage

Ofloxacin ophthalmic solution is indicated for the treatment of infections caused by susceptible strains of the following bacteria in the conditions listed below:

*Efficacy for this organism was studied in fewer than 10 infections

CONJUNCTIVITIS:

       Gram-positive bacteria:

       Gram-negative bacteria:

               Staphylococcus aureus

               Enterobacter cloacae

               Staphylococcus epidermidis

               Haemophilus influenzae

               Streptococcus pneumoniae

               Proteus mirabilis

 

               Pseudomonas aeruginosa

CORNEAL ULCERS:

       Gram-positive bacteria:

       Gram-negative bacteria:

               Staphylococcus aureus

               Pseudomonas aeruginosa

               Staphylococcus epidermidis

               Serratia marcescens*

               Streptococcus pneumoniae

       Anaerobic species:

               Propionibacterium acnes

Dosage and Administration

The recommended dosage regimen for the treatment of bacterial conjunctivitisis:

Days 1 and 2

Instill one to two drops every two to four hours in the affected eye(s).

Days 3 through 7

Instill one to two drops four times daily.

The recommended dosage regimen for the treatment of bacterial corneal ulceris:

Days 1 and 2

Instill one to two drops into the affected eye every 30 minutes, while awake. Awaken at approximately four and six hours after retiring and instill one to two drops.

Days 3 through 7 to 9

Instill one to two drops hourly, while awake.

Days 7 to 9 through

treatment completion

Instill one to two drops, four times daily.

Contraindications

Ofloxacin ophthalmic solution is contraindicated in patients with a history of hypersensitivity to ofloxacin, to other quinolones, or to any of the components in this medication ( see Warnings).

Drug Interactions

Specific drug interaction studies have not been conducted with ofloxacin ophthalmic solution. However, the systemic administration of some quinolones has been shown to elevate plasma concentrations of theophylline, interfere with the metabolism of caffeine, and enhance the effects of the oral anticoagulant warfarin and its derivatives, and has been associated with transient elevations in serum creatinine in patients receiving cyclosporine concomitantly.

How Supplied

Ofloxacin Ophthalmic Solution, USP 0.3% is supplied sterile in white LDPE plastic bottles and white dropper tips with tan high density poly ethylene (HDPE) caps as follows:

5 mL in 10 mL bottle -NDC 68071-3448-5

Note:Store at 20ºC to 25ºC (68ºF to 77ºF) [see USP Controlled Room Temperature].

Rx only

Manufactured for:

Lifestar Pharma LLC

1200 MacArthur Blvd.

Mahwah, NJ 07430 USA

Product of Spain

All trademarks are the property of their respective owners.

Revised:March 2023, V-04

Description

Ofloxacin ophthalmic solution USP, 0.3%is a sterile ophthalmic solution. It is a fluorinated carboxyquinolone anti-infective for topical ophthalmic use.

General

As with other anti-infectives, prolonged use may result in overgrowth of nonsusceptible organisms, including fungi. If superinfection occurs discontinue use and institute alternative therapy. Whenever clinical judgment dictates, the patient should be examined with the aid of magnification, such as slit lamp biomicroscopy and, where appropriate, fluorescein staining. Ofloxacin should be discontinued at the first appearance of a skin rash or any other sign of hypersensitivity reaction.

The systemic administration of quinolones, including ofloxacin, has led to lesions or erosions of the cartilage in weight-bearing joints and other signs of arthropathy in immature animals of various species. Ofloxacin, administered systemically at 10 mg/kg/day in young dogs (equivalent to 110 times the maximum recommended daily adult ophthalmic dose) has been associated with these types of effects.

Warnings

NOT FOR INJECTION.

Ofloxacin ophthalmic solution should not be injected subconjunctivally, nor should it be introduced directly into the anterior chamber of the eye.

There are rare reports of anaphylactic reaction/shock and fatal hypersensitivity reactions in patients receiving systemic quinolones, some following the first dose, including ofloxacin. Some reactions were accompanied by cardiovascular collapse, loss of consciousness, angioedema (including laryngeal, pharyngeal or facial edema), airway obstruction, dyspnea, urticaria, and itching. A rare occurrence of Stevens-Johnson syndrome, which progressed to toxic epidermal necrolysis, has been reported in a patient who was receiving topical ophthalmic ofloxacin. If an allergic reaction to ofloxacin occurs, discontinue the drug. Serious acute hypersensitivity reactions may require immediate emergency treatment. Oxygen and airway management, including intubation should be administered as clinically indicated.

Microbiology

Ofloxacin has in vitroactivity against a broad range of gram-positive and gram-negative aerobic and anaerobic bacteria. Ofloxacin is bactericidal at concentrations equal to or slightly greater than inhibitory concentrations. Ofloxacin is thought to exert a bactericidal effect on susceptible bacterial cells by inhibiting DNA gyrase, an essential bacterial enzyme which is a critical catalyst in the duplication, transcription, and repair of bacterial DNA.

Cross-resistance has been observed between ofloxacin and other fluoroquinolones. There is generally no cross-resistance between ofloxacin and other classes of antibacterial agents such as beta-lactams or aminoglycosides.

Ofloxacin has been shown to be active against most strains of the following organisms both in vitroand clinically, in conjunctival and/or corneal ulcer infections (see Indications and Usage).

*Efficacy for this organism was studied in fewer than 10 infections

AEROBES, GRAM-POSITIVE:

AEROBES, GRAM-NEGATIVE:

       Staphylococcus aureus

       Enterobacter cloacae

       Staphylococcus epidermidis

       Haemophilus influenzae

       Streptococcus pneumoniae

       Proteus mirabilis

ANAEROBIC SPECIES:

       Pseudomonas aeruginosa

       Propionibacterium acnes

       Serratia marcescens*

The safety and effectiveness of ofloxacin ophthalmic solution in treating ophthalmologic infections due to the following organisms have not been established in adequate and well-controlled clinical trials. ofloxacin ophthalmic solution has been shown to be active in vitroagainst most strains of these organisms but the clinical significance in ophthalmologic infections is unknown.

AEROBES, GRAM-POSITIVE:

       Enterococcus faecalis

       Staphylococcus hominus

       Listeria monocytogenes

       Staphylococcus simulans

       Staphylococcus capitis

       Streptococcus pyogenes

AEROBES, GRAM-NEGATIVE:

       Acinetobacter calcoaceticus var. anitratus

       Klebsiella pneumoniae

       Acinetobacter calcoaceticus var. lwoffii

       Moraxella (Branhamella) catarrhalis

       Citrobacter diversus

       Moraxella lacunata

       Citrobacter freundii

       Morganella morganii

       Enterobacter aerogenes

       Neisseria gonorrhoeae

       Enterobacter agglomerans

       Pseudomonas acidovorans

       Escherichia coli

       Pseudomonas fluorescens

       Haemophilus parainfluenzae

       Shigella sonnei

       Klebsiella oxytoca

OTHER:

       Chlamydia trachomatis

Geriatric Use

No overall differences in safety or effectiveness have been observed between elderly and younger patients.

Pediatric Use

Safety and effectiveness in infants below the age of one year have not been established.

Quinolones, including ofloxacin, have been shown to cause arthropathy in immature animals after oral administration; however, topical ocular administration of ofloxacin to immature animals has not shown any arthropathy. There is no evidence that the ophthalmic dosage form of ofloxacin has any effect on weight bearing joints.

Chemical Name:

(±)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7 H-pyrido[1,2,3- de]-1,4-benzoxazine-6-carboxylic acid.

Contains: Active:ofloxacin 0.3% (3 mg/mL). Preservative:benzalkonium chloride (0.005%).

Inactives:sodium chloride and water for injection. May also contain hydrochloric acid and/or sodium hydroxide to adjust pH.

Ofloxacin ophthalmic solution, USPis unbuffered and formulated with a pH of 6.4 (range - 6.0 to 6.8). It has an osmolality of 300 mOsm/kg. Ofloxacin is a fluorinated 4-quinolone which differs from other fluorinated 4-quinolones in that there is a six member (pyridobenzoxazine) ring from positions 1 to 8 of the basic ring structure.

Conjunctivitis

In a randomized, double-masked, multicenter clinical trial, ofloxacin ophthalmic solution was superior to its vehicle after 2 days of treatment in patients with conjunctivitis and positive conjunctival cultures. Clinical outcomes for the trial demonstrated a clinical improvement rate of 86% (54/63) for the ofloxacin treated group versus 72% (48/67) for the placebo treated group after 2 days of therapy. Microbiological outcomes for the same clinical trial demonstrated an eradication rate for causative pathogens of 65% (41/63) for the ofloxacin treated group versus 25% (17/67) for the vehicle treated group after 2 days of therapy. Please note that microbiologic eradication does not always correlate with clinical outcome in anti-infective trials.

Corneal Ulcers

In a randomized, double-masked, multi-center clinical trial of 140 subjects with positive cultures, ofloxacin ophthalmic solution treated subjects had an overall clinical success rate (complete re-epithelialization and no progression of the infiltrate for two consecutive visits) of 82% (61/74) compared to 80% (53/66) for the fortified antibiotic group, consisting of 1.5% tobramycin and 10% cefazolin solutions. The median time to clinical success was 11 days for the ofloxacin treated group and 10 days for the fortified treatment group.

Ophthalmic Use

The most frequently reported drug-related adverse reaction was transient ocular burning or discomfort. Other reported reactions include stinging, redness, itching, chemical conjunctivitis/keratitis, ocular/periocular/facial edema, foreign body sensation, photophobia, blurred vision, tearing, dryness, and eye pain. Rare reports of dizziness and nausea have been received.

Refer to Warnings for additional adverse reactions.

To report SUSPECTED ADVERSE REACTIONS, contact Lifestar Pharma LLC at 1-888-995-4337 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Nursing Mothers

In nursing women a single 200 mg oral dose resulted in concentrations of ofloxacin in milk which were similar to those found in plasma. It is not known whether ofloxacin is excreted in human milk following topical ophthalmic administration. Because of the potential for serious adverse reactions from ofloxacin 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.  

Pharmacokinetics

Serum, urine and tear concentrations of ofloxacin were measured in 30 healthy women at various time points during a ten-day course of treatment with ofloxacin ophthalmic solution. The mean serum ofloxacin concentration ranged from 0.4 ng/mL to 1.9 ng/mL. Maximum ofloxacin concentration increased from 1.1 ng/mL on day one to 1.9 ng/mL on day 11 after QID dosing for 10 1/2 days. Maximum serum ofloxacin concentrations after ten days of topical ophthalmic dosing were more than 1000 times lower than those reported after standard oral doses of ofloxacin.

Tear ofloxacin concentrations ranged from 5.7 to 31 mcg/g during the 40 minute period following the last dose on day 11. Mean tear concentration measured four hours after topical ophthalmic dosing was 9.2 mcg/g.

Corneal tissue concentrations of 4.4 mcg/mL were observed four hours after beginning topical ocular application of two drops of ofloxacin ophthalmic solution every 30 minutes. Ofloxacin was excreted in the urine primarily unmodified.

Teratogenic Effects

Ofloxacin has been shown to have an embryocidal effect in rats and in rabbits when given in doses of 810 mg/kg/day (equivalent to 9000 times the maximum recommended daily ophthalmic dose) and 160 mg/kg/day (equivalent to 1800 times the maximum recommended daily ophthalmic dose). These dosages resulted in decreased fetal body weight and increased fetal mortality in rats and rabbits, respectively. Minor fetal skeletal variations were reported in rats receiving doses of 810 mg/kg/day. Ofloxacin has not been shown to be teratogenic at doses as high as 810 mg/kg/day and 160 mg/kg/day when administered to pregnant rats and rabbits, respectively.

Nonteratogenic Effects

Additional studies in rats with doses up to 360 mg/kg/day during late gestation showed no adverse effect on late fetal development, labor, delivery, lactation, neonatal viability, or growth of the newborn.

There are, however, no adequate and well-controlled studies in pregnant women. Ofloxacin ophthalmic solution should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Information for Patients

Avoid contaminating the applicator tip with material from the eye, fingers or other source. 

Systemic quinolones, including ofloxacin, have been associated with hypersensitivity reactions, even following a single dose. Discontinue use immediately and contact your physician at the first sign of a rash or allergic reaction.

Package Label.principal Display Panel

Carcinogenesis, Mutagenesis, Impairment of Fertility

Long term studies to determine the carcinogenic potential of ofloxacin have not been conducted.

Ofloxacin was not mutagenic in the Ames test, in vitroand in vivo cytogenic assay, sister chromatid exchange assay (Chinese hamster and human cell lines), unscheduled DNA synthesis (UDS) assay using human fibroblasts, the dominant lethal assay, or mouse micronucleus assay. Ofloxacin was positive in the UDS test using rat hepatocyte, and in the mouse lymphoma assay. 

In fertility studies in rats, ofloxacin did not affect male or female fertility or morphological or reproductive performance at oral dosing up to 360 mg/kg/day (equivalent to 4000 times the maximum recommended daily ophthalmic dose).


Structured Label Content

General

As with other anti-infectives, prolonged use may result in overgrowth of nonsusceptible organisms, including fungi. If superinfection occurs discontinue use and institute alternative therapy. Whenever clinical judgment dictates, the patient should be examined with the aid of magnification, such as slit lamp biomicroscopy and, where appropriate, fluorescein staining. Ofloxacin should be discontinued at the first appearance of a skin rash or any other sign of hypersensitivity reaction.

The systemic administration of quinolones, including ofloxacin, has led to lesions or erosions of the cartilage in weight-bearing joints and other signs of arthropathy in immature animals of various species. Ofloxacin, administered systemically at 10 mg/kg/day in young dogs (equivalent to 110 times the maximum recommended daily adult ophthalmic dose) has been associated with these types of effects.

Warnings (WARNINGS)

NOT FOR INJECTION.

Ofloxacin ophthalmic solution should not be injected subconjunctivally, nor should it be introduced directly into the anterior chamber of the eye.

There are rare reports of anaphylactic reaction/shock and fatal hypersensitivity reactions in patients receiving systemic quinolones, some following the first dose, including ofloxacin. Some reactions were accompanied by cardiovascular collapse, loss of consciousness, angioedema (including laryngeal, pharyngeal or facial edema), airway obstruction, dyspnea, urticaria, and itching. A rare occurrence of Stevens-Johnson syndrome, which progressed to toxic epidermal necrolysis, has been reported in a patient who was receiving topical ophthalmic ofloxacin. If an allergic reaction to ofloxacin occurs, discontinue the drug. Serious acute hypersensitivity reactions may require immediate emergency treatment. Oxygen and airway management, including intubation should be administered as clinically indicated.

Description (DESCRIPTION)

Ofloxacin ophthalmic solution USP, 0.3%is a sterile ophthalmic solution. It is a fluorinated carboxyquinolone anti-infective for topical ophthalmic use.

How Supplied (HOW SUPPLIED)

Ofloxacin Ophthalmic Solution, USP 0.3% is supplied sterile in white LDPE plastic bottles and white dropper tips with tan high density poly ethylene (HDPE) caps as follows:

5 mL in 10 mL bottle -NDC 68071-3448-5

Note:Store at 20ºC to 25ºC (68ºF to 77ºF) [see USP Controlled Room Temperature].

Rx only

Manufactured for:

Lifestar Pharma LLC

1200 MacArthur Blvd.

Mahwah, NJ 07430 USA

Product of Spain

All trademarks are the property of their respective owners.

Revised:March 2023, V-04

Microbiology

Ofloxacin has in vitroactivity against a broad range of gram-positive and gram-negative aerobic and anaerobic bacteria. Ofloxacin is bactericidal at concentrations equal to or slightly greater than inhibitory concentrations. Ofloxacin is thought to exert a bactericidal effect on susceptible bacterial cells by inhibiting DNA gyrase, an essential bacterial enzyme which is a critical catalyst in the duplication, transcription, and repair of bacterial DNA.

Cross-resistance has been observed between ofloxacin and other fluoroquinolones. There is generally no cross-resistance between ofloxacin and other classes of antibacterial agents such as beta-lactams or aminoglycosides.

Ofloxacin has been shown to be active against most strains of the following organisms both in vitroand clinically, in conjunctival and/or corneal ulcer infections (see Indications and Usage).

*Efficacy for this organism was studied in fewer than 10 infections

AEROBES, GRAM-POSITIVE:

AEROBES, GRAM-NEGATIVE:

       Staphylococcus aureus

       Enterobacter cloacae

       Staphylococcus epidermidis

       Haemophilus influenzae

       Streptococcus pneumoniae

       Proteus mirabilis

ANAEROBIC SPECIES:

       Pseudomonas aeruginosa

       Propionibacterium acnes

       Serratia marcescens*

The safety and effectiveness of ofloxacin ophthalmic solution in treating ophthalmologic infections due to the following organisms have not been established in adequate and well-controlled clinical trials. ofloxacin ophthalmic solution has been shown to be active in vitroagainst most strains of these organisms but the clinical significance in ophthalmologic infections is unknown.

AEROBES, GRAM-POSITIVE:

       Enterococcus faecalis

       Staphylococcus hominus

       Listeria monocytogenes

       Staphylococcus simulans

       Staphylococcus capitis

       Streptococcus pyogenes

AEROBES, GRAM-NEGATIVE:

       Acinetobacter calcoaceticus var. anitratus

       Klebsiella pneumoniae

       Acinetobacter calcoaceticus var. lwoffii

       Moraxella (Branhamella) catarrhalis

       Citrobacter diversus

       Moraxella lacunata

       Citrobacter freundii

       Morganella morganii

       Enterobacter aerogenes

       Neisseria gonorrhoeae

       Enterobacter agglomerans

       Pseudomonas acidovorans

       Escherichia coli

       Pseudomonas fluorescens

       Haemophilus parainfluenzae

       Shigella sonnei

       Klebsiella oxytoca

OTHER:

       Chlamydia trachomatis

Geriatric Use

No overall differences in safety or effectiveness have been observed between elderly and younger patients.

Pediatric Use

Safety and effectiveness in infants below the age of one year have not been established.

Quinolones, including ofloxacin, have been shown to cause arthropathy in immature animals after oral administration; however, topical ocular administration of ofloxacin to immature animals has not shown any arthropathy. There is no evidence that the ophthalmic dosage form of ofloxacin has any effect on weight bearing joints.

Chemical Name:

(±)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7 H-pyrido[1,2,3- de]-1,4-benzoxazine-6-carboxylic acid.

Contains: Active:ofloxacin 0.3% (3 mg/mL). Preservative:benzalkonium chloride (0.005%).

Inactives:sodium chloride and water for injection. May also contain hydrochloric acid and/or sodium hydroxide to adjust pH.

Ofloxacin ophthalmic solution, USPis unbuffered and formulated with a pH of 6.4 (range - 6.0 to 6.8). It has an osmolality of 300 mOsm/kg. Ofloxacin is a fluorinated 4-quinolone which differs from other fluorinated 4-quinolones in that there is a six member (pyridobenzoxazine) ring from positions 1 to 8 of the basic ring structure.

Conjunctivitis

In a randomized, double-masked, multicenter clinical trial, ofloxacin ophthalmic solution was superior to its vehicle after 2 days of treatment in patients with conjunctivitis and positive conjunctival cultures. Clinical outcomes for the trial demonstrated a clinical improvement rate of 86% (54/63) for the ofloxacin treated group versus 72% (48/67) for the placebo treated group after 2 days of therapy. Microbiological outcomes for the same clinical trial demonstrated an eradication rate for causative pathogens of 65% (41/63) for the ofloxacin treated group versus 25% (17/67) for the vehicle treated group after 2 days of therapy. Please note that microbiologic eradication does not always correlate with clinical outcome in anti-infective trials.

Corneal Ulcers

In a randomized, double-masked, multi-center clinical trial of 140 subjects with positive cultures, ofloxacin ophthalmic solution treated subjects had an overall clinical success rate (complete re-epithelialization and no progression of the infiltrate for two consecutive visits) of 82% (61/74) compared to 80% (53/66) for the fortified antibiotic group, consisting of 1.5% tobramycin and 10% cefazolin solutions. The median time to clinical success was 11 days for the ofloxacin treated group and 10 days for the fortified treatment group.

Ophthalmic Use

The most frequently reported drug-related adverse reaction was transient ocular burning or discomfort. Other reported reactions include stinging, redness, itching, chemical conjunctivitis/keratitis, ocular/periocular/facial edema, foreign body sensation, photophobia, blurred vision, tearing, dryness, and eye pain. Rare reports of dizziness and nausea have been received.

Refer to Warnings for additional adverse reactions.

To report SUSPECTED ADVERSE REACTIONS, contact Lifestar Pharma LLC at 1-888-995-4337 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Nursing Mothers

In nursing women a single 200 mg oral dose resulted in concentrations of ofloxacin in milk which were similar to those found in plasma. It is not known whether ofloxacin is excreted in human milk following topical ophthalmic administration. Because of the potential for serious adverse reactions from ofloxacin 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.  

Pharmacokinetics

Serum, urine and tear concentrations of ofloxacin were measured in 30 healthy women at various time points during a ten-day course of treatment with ofloxacin ophthalmic solution. The mean serum ofloxacin concentration ranged from 0.4 ng/mL to 1.9 ng/mL. Maximum ofloxacin concentration increased from 1.1 ng/mL on day one to 1.9 ng/mL on day 11 after QID dosing for 10 1/2 days. Maximum serum ofloxacin concentrations after ten days of topical ophthalmic dosing were more than 1000 times lower than those reported after standard oral doses of ofloxacin.

Tear ofloxacin concentrations ranged from 5.7 to 31 mcg/g during the 40 minute period following the last dose on day 11. Mean tear concentration measured four hours after topical ophthalmic dosing was 9.2 mcg/g.

Corneal tissue concentrations of 4.4 mcg/mL were observed four hours after beginning topical ocular application of two drops of ofloxacin ophthalmic solution every 30 minutes. Ofloxacin was excreted in the urine primarily unmodified.

Contraindications (CONTRAINDICATIONS)

Ofloxacin ophthalmic solution is contraindicated in patients with a history of hypersensitivity to ofloxacin, to other quinolones, or to any of the components in this medication ( see Warnings).

Drug Interactions

Specific drug interaction studies have not been conducted with ofloxacin ophthalmic solution. However, the systemic administration of some quinolones has been shown to elevate plasma concentrations of theophylline, interfere with the metabolism of caffeine, and enhance the effects of the oral anticoagulant warfarin and its derivatives, and has been associated with transient elevations in serum creatinine in patients receiving cyclosporine concomitantly.

Teratogenic Effects

Ofloxacin has been shown to have an embryocidal effect in rats and in rabbits when given in doses of 810 mg/kg/day (equivalent to 9000 times the maximum recommended daily ophthalmic dose) and 160 mg/kg/day (equivalent to 1800 times the maximum recommended daily ophthalmic dose). These dosages resulted in decreased fetal body weight and increased fetal mortality in rats and rabbits, respectively. Minor fetal skeletal variations were reported in rats receiving doses of 810 mg/kg/day. Ofloxacin has not been shown to be teratogenic at doses as high as 810 mg/kg/day and 160 mg/kg/day when administered to pregnant rats and rabbits, respectively.

Indications and Usage (INDICATIONS AND USAGE)

Ofloxacin ophthalmic solution is indicated for the treatment of infections caused by susceptible strains of the following bacteria in the conditions listed below:

*Efficacy for this organism was studied in fewer than 10 infections

CONJUNCTIVITIS:

       Gram-positive bacteria:

       Gram-negative bacteria:

               Staphylococcus aureus

               Enterobacter cloacae

               Staphylococcus epidermidis

               Haemophilus influenzae

               Streptococcus pneumoniae

               Proteus mirabilis

 

               Pseudomonas aeruginosa

CORNEAL ULCERS:

       Gram-positive bacteria:

       Gram-negative bacteria:

               Staphylococcus aureus

               Pseudomonas aeruginosa

               Staphylococcus epidermidis

               Serratia marcescens*

               Streptococcus pneumoniae

       Anaerobic species:

               Propionibacterium acnes

Nonteratogenic Effects

Additional studies in rats with doses up to 360 mg/kg/day during late gestation showed no adverse effect on late fetal development, labor, delivery, lactation, neonatal viability, or growth of the newborn.

There are, however, no adequate and well-controlled studies in pregnant women. Ofloxacin ophthalmic solution should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Information for Patients

Avoid contaminating the applicator tip with material from the eye, fingers or other source. 

Systemic quinolones, including ofloxacin, have been associated with hypersensitivity reactions, even following a single dose. Discontinue use immediately and contact your physician at the first sign of a rash or allergic reaction.

Dosage and Administration (DOSAGE AND ADMINISTRATION)

The recommended dosage regimen for the treatment of bacterial conjunctivitisis:

Days 1 and 2

Instill one to two drops every two to four hours in the affected eye(s).

Days 3 through 7

Instill one to two drops four times daily.

The recommended dosage regimen for the treatment of bacterial corneal ulceris:

Days 1 and 2

Instill one to two drops into the affected eye every 30 minutes, while awake. Awaken at approximately four and six hours after retiring and instill one to two drops.

Days 3 through 7 to 9

Instill one to two drops hourly, while awake.

Days 7 to 9 through

treatment completion

Instill one to two drops, four times daily.

Package Label.principal Display Panel (PACKAGE LABEL.PRINCIPAL DISPLAY PANEL)

Carcinogenesis, Mutagenesis, Impairment of Fertility

Long term studies to determine the carcinogenic potential of ofloxacin have not been conducted.

Ofloxacin was not mutagenic in the Ames test, in vitroand in vivo cytogenic assay, sister chromatid exchange assay (Chinese hamster and human cell lines), unscheduled DNA synthesis (UDS) assay using human fibroblasts, the dominant lethal assay, or mouse micronucleus assay. Ofloxacin was positive in the UDS test using rat hepatocyte, and in the mouse lymphoma assay. 

In fertility studies in rats, ofloxacin did not affect male or female fertility or morphological or reproductive performance at oral dosing up to 360 mg/kg/day (equivalent to 4000 times the maximum recommended daily ophthalmic dose).


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