ketotifen, ophthalmic (OTC)

Brand and Other Names:Zaditor, Alaway, more...Zyrtec Itchy Eye Drops
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Dosing & Uses

AdultPediatric

Dosage Forms & Strengths

ophthalmic solution

  • 0.025% (equivalent to ketotifen fumarate 0.035%)

Allergic Conjunctivitis

1 gtt in affected eye(s) q8-12hr

Not to exceed 2 doses/day

Administration

Remove contact lenses before use

Wait at least 10 min before re-inserting contact lenses after use

Avoid contamination by not touching tip of container

Replace cap after each use

Dosage Forms & Strengths

ophthalmic solution

  • 0.025% (equivalent to ketotifen fumarate 0.035%)

Allergic Conjunctivitis

<3 years: Safety and efficacy not established

3 >years: 1 gtt in affected eye(s) q8-12hr; not typically recommended

Not to exceed 2 doses/day

Administration

Remove contact lenses before use

Wait at least 10 min before re-inserting contact lenses after use

Avoid contamination by not touching tip of container

Replace cap after each use

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Interactions

Interaction Checker

and ketotifen, ophthalmic

No Results

     activity indicator 
    No Interactions Found
    Interactions Found

    Contraindicated

      Serious - Use Alternative

        Significant - Monitor Closely

          Minor

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            Adverse Effects

            Frequency Not Defined

            Conjunctivitis

            Headache

            Eye pain

            Lacrimation disorder

            Keratitis

            Mydriasis

            Eyelid disorder

            Rhinitis

            Photophobia

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            Warnings

            Contraindications

            Hypersensitivity

            Cautions

            Delay insertion of soft contact lenses for at least 10 min after ketotifen instillation, since benzalkonium chloride preservative may be absorbed by soft lenses; do not wear contact lenses if eyes red

            Contact healthcare provider if symptoms worsen or do not improve within 3 days of initiating therapy

            Solution should not be used if cloudy or change in color

            Not for treatment of contact lens related irritation

            Discontinue use, and contact healthcare provider, if experience eye pain, changes in vision, redness of the eyes, itching worsens or lasts >72 hr

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            Pregnancy & Lactation

            Pregnancy Category: C

            Lactation: Not known if distributed in milk; use caution

            Pregnancy Categories

            A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.

            B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.

            C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.

            D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.

            X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.

            NA: Information not available.

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            Pharmacology

            Mechanism of Action

            Histamine H1 antagonist and mast cell stabilizer; inhibits vascular permeability and may prevent chemokine induced migration of eosinophils into inflamed conjunctiva

            Pharmacokinetics

            Onset of action: Minutes

            Absorption: Minimal (systemic)

            Duration: 8-12hr

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            Images

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            Medscape prescription drug monographs are based on FDA-approved labeling information, unless otherwise noted, combined with additional data derived from primary medical literature.