Gentamicin 0.3% Ophth Soln 5ml
It is used to treat eye infections.
Drug Class
Ophthalmic Antibiotic
Pharmacologic Class
Aminoglycoside
Pregnancy Category
Category C
FDA Approved
Jan 1970
DEA Schedule
Not Controlled
Overview
What is this medicine?
Gentamicin eye drops are an antibiotic used to treat bacterial infections of the eye. It works by stopping the growth of bacteria.
How to Use This Medicine
Proper Use of This Medication
To use this medication correctly, follow your doctor's instructions and read all the information provided. Use the medication as directed, even if your symptoms improve.
Administration Instructions
1. Use this medication for the eye only.
2. Wash your hands before and after use to maintain cleanliness.
3. Avoid touching the container tip to the eye, lid, or other skin, as this can introduce bacteria into the medication, potentially leading to severe eye problems or vision loss.
4. Tilt your head back and gently drop the medication into the eye.
5. After administration, keep your eyes closed and apply gentle pressure to the inside corner of the eye for 1 to 2 minutes. This helps retain the medication in the eye.
Storage and Disposal
Store the medication at room temperature, protected from heat. Keep all medications in a safe location, out of the reach of children and pets.
Missed Dose Instructions
If you miss a dose, use it as soon as you remember. However, if it is close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not use two doses at the same time or take extra doses.
To use this medication correctly, follow your doctor's instructions and read all the information provided. Use the medication as directed, even if your symptoms improve.
Administration Instructions
1. Use this medication for the eye only.
2. Wash your hands before and after use to maintain cleanliness.
3. Avoid touching the container tip to the eye, lid, or other skin, as this can introduce bacteria into the medication, potentially leading to severe eye problems or vision loss.
4. Tilt your head back and gently drop the medication into the eye.
5. After administration, keep your eyes closed and apply gentle pressure to the inside corner of the eye for 1 to 2 minutes. This helps retain the medication in the eye.
Storage and Disposal
Store the medication at room temperature, protected from heat. Keep all medications in a safe location, out of the reach of children and pets.
Missed Dose Instructions
If you miss a dose, use it as soon as you remember. However, if it is close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not use two doses at the same time or take extra doses.
Lifestyle & Tips
- Wash hands thoroughly before and after applying eye drops.
- Do not touch the dropper tip to your eye or any other surface to avoid contamination.
- Tilt your head back, pull down your lower eyelid to form a pouch, and instill the prescribed number of drops.
- Close your eye gently for 1-2 minutes after applying to allow the medication to be absorbed.
- If using other eye medications, wait at least 5-10 minutes between applications.
- Do not wear contact lenses during treatment for an eye infection unless advised by your doctor.
- Complete the full course of treatment, even if symptoms improve, to prevent recurrence and resistance.
Available Forms & Alternatives
Available Strengths:
- Gentamicin 0.3% Ophth Soln 5ml
- Gentamicin 0.3% Ophth Solution
- Gentamicin 40mg/ml Inj, 2ml
- Gentamicin 0.1% Cream 15gm
- Gentamicin 40mg/ml Inj, 20ml
- Gentamicin 0.1% Cream 30gm
- Gentamicin Pf Ped 10mg/ml Inj, 2ml
- Gentamicin 0.1% Oint 15gm (topical)
- Gentamicin 0.1% Oint 30gm (topical)
- Gentamicin 80mg/ml Inj, 2ml
Dosing & Administration
Adult Dosing
Standard Dose:
1-2 drops into the affected eye(s) every 4 hours. For severe infections, dosage may be increased to 2 drops every hour.
Condition-Specific Dosing:
severe_infection:
2 drops every hour
Pediatric Dosing
Neonatal:
Not established (use with caution, consult specialist)
Infant:
1-2 drops into the affected eye(s) every 4 hours (similar to adult, based on clinical judgment)
Child:
1-2 drops into the affected eye(s) every 4 hours (similar to adult)
Adolescent:
1-2 drops into the affected eye(s) every 4 hours (similar to adult)
Dose Adjustments
Renal Impairment:
Mild:
No adjustment needed (minimal systemic absorption)
Moderate:
No adjustment needed (minimal systemic absorption)
Severe:
No adjustment needed (minimal systemic absorption)
Dialysis:
No adjustment needed (minimal systemic absorption)
Hepatic Impairment:
Mild:
No adjustment needed (minimal systemic absorption)
Moderate:
No adjustment needed (minimal systemic absorption)
Severe:
No adjustment needed (minimal systemic absorption)
Pharmacology
Mechanism of Action
Gentamicin is an aminoglycoside antibiotic. It exerts its bactericidal effect by irreversibly binding to the 30S ribosomal subunit of susceptible bacteria, thereby inhibiting bacterial protein synthesis. This leads to the production of faulty proteins and ultimately bacterial cell death.
Pharmacokinetics
Absorption:
Bioavailability:
Negligible systemic absorption from ophthalmic administration
Tmax:
Not applicable (local action)
FoodEffect:
Not applicable
Distribution:
Vd:
Not applicable (local action)
ProteinBinding:
Not applicable (local action)
CnssPenetration:
No (minimal systemic absorption)
Elimination:
HalfLife:
Not applicable (minimal systemic absorption)
Clearance:
Not applicable (minimal systemic absorption)
ExcretionRoute:
Not applicable (minimal systemic absorption)
Unchanged:
Not applicable (minimal systemic absorption)
Pharmacodynamics
OnsetOfAction:
Rapid (within hours for symptomatic relief)
PeakEffect:
Within hours to days depending on infection severity
DurationOfAction:
Approximately 4 hours (requires frequent dosing)
Safety & Warnings
Side Effects
Urgent Side Effects: Seek Medical Help Right Away
While rare, some people may experience severe and potentially life-threatening side effects when taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:
Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Changes in eyesight
Eye pain
Eye irritation
Other Possible Side Effects
Like all medications, this drug can cause side effects. Although many people may not experience any side effects or only minor ones, it's essential to discuss any concerns with your doctor. If you experience any of the following side effects or any other unusual symptoms that bother you or persist, contact your doctor for advice:
* Burning
Reporting Side Effects
This list is not exhaustive, and you may experience other side effects not mentioned here. If you have questions or concerns about side effects, don't hesitate to reach out to your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
While rare, some people may experience severe and potentially life-threatening side effects when taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:
Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Changes in eyesight
Eye pain
Eye irritation
Other Possible Side Effects
Like all medications, this drug can cause side effects. Although many people may not experience any side effects or only minor ones, it's essential to discuss any concerns with your doctor. If you experience any of the following side effects or any other unusual symptoms that bother you or persist, contact your doctor for advice:
* Burning
Reporting Side Effects
This list is not exhaustive, and you may experience other side effects not mentioned here. If you have questions or concerns about side effects, don't hesitate to reach out to your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Worsening eye pain, redness, or swelling
- New or increased discharge from the eye
- Severe itching or rash around the eye
- Signs of an allergic reaction (e.g., swelling of face/tongue, severe dizziness, trouble breathing)
- No improvement in symptoms after 2-3 days of treatment
Before Using This Medicine
Before Taking This Medication: Important Information to Share with Your Doctor
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
All medications you are currently taking, including prescription and over-the-counter (OTC) drugs, natural products, and vitamins. This is crucial to avoid potential interactions between this medication and other substances.
* Any existing health problems you have, as this medication may interact with certain conditions.
To ensure your safety, it is vital to verify that it is safe to take this medication with all your current medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
All medications you are currently taking, including prescription and over-the-counter (OTC) drugs, natural products, and vitamins. This is crucial to avoid potential interactions between this medication and other substances.
* Any existing health problems you have, as this medication may interact with certain conditions.
To ensure your safety, it is vital to verify that it is safe to take this medication with all your current medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
Precautions & Cautions
It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. When taking this drug, exercise caution when driving or performing tasks that require clear vision to ensure your safety. Do not exceed the prescribed duration of use, as this may increase the risk of a secondary infection. If you are pregnant, planning to become pregnant, or are breast-feeding, consult your doctor to discuss the potential benefits and risks of this medication to both you and your baby.
Overdose Information
Overdose Symptoms:
- Excessive tearing
- Increased redness
- Swelling of the eyelid
What to Do:
Rinse the eye with lukewarm water. If irritation persists or symptoms are severe, contact a poison control center (1-800-222-1222) or seek medical attention.
Drug Interactions
Monitoring
Baseline Monitoring
Visual acuity
Rationale: To assess baseline vision and monitor for improvement or worsening.
Timing: Prior to initiation of therapy
Ocular examination (redness, discharge, swelling)
Rationale: To assess the severity and type of infection.
Timing: Prior to initiation of therapy
Routine Monitoring
Resolution of infection signs/symptoms
Frequency: Daily
Target: Improvement or complete resolution
Action Threshold: Worsening symptoms or no improvement after 2-3 days may indicate resistance or incorrect diagnosis; re-evaluate therapy.
Signs of ocular irritation or hypersensitivity
Frequency: Daily
Target: Absence of new or worsening irritation
Action Threshold: Discontinue if irritation, itching, or swelling occurs.
Symptom Monitoring
- Eye pain
- Redness
- Swelling
- Discharge
- Itching
- Blurred vision
- Sensitivity to light
Special Patient Groups
Pregnancy
Gentamicin ophthalmic is classified as Pregnancy Category C. While systemic aminoglycosides are associated with fetal ototoxicity, the systemic absorption from ophthalmic administration is negligible, making the risk to the fetus very low. Use only if the potential benefit justifies the potential risk to the fetus.
Trimester-Specific Risks:
First Trimester:
Low risk due to minimal systemic absorption.
Second Trimester:
Low risk due to minimal systemic absorption.
Third Trimester:
Low risk due to minimal systemic absorption.
Lactation
Gentamicin is excreted in breast milk after systemic administration, but systemic absorption from ophthalmic use is minimal. Therefore, the amount transferred into breast milk is expected to be negligible, posing a low risk to the nursing infant. Considered L3 (moderately safe).
Infant Risk:
Low risk of adverse effects to the infant due to minimal systemic absorption by the mother.
Pediatric Use
Generally considered safe and effective for use in pediatric patients, including infants, for appropriate indications. Dosing is typically similar to adults. Close monitoring for signs of irritation or worsening infection is recommended.
Geriatric Use
No specific dosage adjustments are required for geriatric patients. The safety and efficacy profile is similar to that in younger adults, given the minimal systemic absorption.
Clinical Information
Clinical Pearls
- Gentamicin ophthalmic solution is effective against a broad spectrum of gram-negative bacteria, including Pseudomonas aeruginosa, which is a common cause of severe eye infections.
- Prolonged use of ophthalmic antibiotics, including gentamicin, may result in the overgrowth of non-susceptible organisms, including fungi. If superinfection occurs, discontinue use and initiate appropriate therapy.
- Patients should be advised not to wear contact lenses during treatment for bacterial conjunctivitis or other eye infections.
- Store at room temperature, away from light and moisture. Do not freeze.
Alternative Therapies
- Tobramycin ophthalmic solution
- Moxifloxacin ophthalmic solution
- Gatifloxacin ophthalmic solution
- Ciprofloxacin ophthalmic solution
- Erythromycin ophthalmic ointment
- Polymyxin B/Trimethoprim ophthalmic solution
Cost & Coverage
Average Cost:
$10 - $30 per 5ml bottle
Generic Available:
Yes
Insurance Coverage:
Tier 1 (Generic)
General Drug Facts
If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so be sure to check with your pharmacist for more information. If you have any questions or concerns about this medication, don't hesitate to reach out to your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide details about the overdose, including the medication taken, the amount, and the time it occurred.