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Pronunciation |
|
(na
ta MYE
sin) |
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U.S. Brand
Names |
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Natacyn® |
|
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Generic
Available |
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No |
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Synonyms |
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Pimaricin |
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Pharmacological Index |
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Antifungal Agent, Ophthalmic |
|
|
Use |
|
Treatment of blepharitis, conjunctivitis, and keratitis caused by susceptible
fungi ( Aspergillus, Candida), Cephalosporium,
Curvularia, Fusarium, Penicillium, Microsporum,
Epidermophyton, Blastomyces dermatitidis, Coccidioides
immitis, Cryptococcus neoformans, Histoplasma capsulatum,
Sporothrix schenckii, and Trichomonas
vaginalis |
|
|
Pregnancy Risk
Factor |
|
C |
|
|
Contraindications |
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Known hypersensitivity to natamycin or any component |
|
|
Warnings/Precautions |
|
Failure to improve (keratitis) after 7-10 days of administration suggests
infection caused by a microorganism not susceptible to natamycin; inadequate as
a single agent in fungal endophthalmitis |
|
|
Adverse
Reactions |
|
<1%: Blurred vision, photophobia, eye pain, eye irritation not present
before therapy |
|
|
Drug
Interactions |
|
Increased toxicity: Topical corticosteroids (concomitant use
contraindicated) |
|
|
Stability |
|
Store at room temperature (8°C to
24°C/46°F to
75°F); protect from excessive heat and light; do not
freeze |
|
|
Mechanism of
Action |
|
Increases cell membrane permeability in susceptible
fungi |
|
|
Pharmacodynamics/Kinetics |
|
Absorption: Ophthalmic: <2% systemically absorbed
Distribution: Adheres to cornea and is retained in the conjunctival fornices
|
|
|
Usual Dosage |
|
Adults: Ophthalmic: Instill 1 drop in conjunctival sac every 1-2 hours, after
3-4 days reduce to one drop 6-8 times/day; usual course of therapy is 2-3
weeks. |
|
|
Mental Health: Effects
on Mental Status |
|
None reported |
|
|
Mental Health:
Effects on Psychiatric
Treatment |
|
None reported |
|
|
Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
|
No information available to require special precautions |
|
|
Dental Health:
Effects on Dental Treatment |
|
No effects or complications reported |
|
|
Patient
Information |
|
For ophthalmic use only. Store at room temperature. Shake before using. Apply
prescribed amount as often as directed. Wash hands before using and do not let
tip of applicator touch eye or contaminate tip of applicator. Tilt head back and
look upward. Gently pull down lower lid and put drop(s) in inner corner of eye.
Close eye and roll eyeball in all directions. Do not blink for
1/2
minute. Apply gentle pressure to inner corner of eye for 30 seconds. Wipe away
excess from skin around eye. Do not use any other eye preparation for at least
10 minutes. Do not touch tip of applicator to eye or contaminate tip of
applicator. Do not share medication with anyone else. May cause sensitivity to
bright light (dark glasses may help); temporary stinging or blurred vision may
occur. Inform prescriber if you experience eye pain, redness, burning, watering,
dryness, double vision, puffiness around eye, vision disturbances, or other
adverse eye response; worsening of condition or lack of improvement within 7-10
days. Pregnancy/breast-feeding precautions: Inform prescriber if you are
pregnant. Consult prescriber if breast-feeding. |
|
|
Nursing
Implications |
|
Shake suspension before using |
|
|
Dosage Forms |
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Suspension, ophthalmic: 5% (15
mL) |
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