Epinastine (epinastine HCl)

Ophthalmic Antiallergic Agents Ophthalmic (Eye) Drops

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Epinastine, a relatively selective histamine H1-receptor antagonist, has mast-cell stabilizing properties.

Epinastine, a relatively selective histamine H1-receptor antagonist, has mast-cell stabilizing properties. The drug inhibits the release of mediators (e.g., histamine) from cells involved in hypersensitivity reactions (e.g., mast cells).

Epinastine ophthalmic solution has a rapid onset of action (3-5 minutes) and a duration of effect of about 8 hours. Epinastine exhibits some affinity for histamine H2, alpha1- and alpha2-adrenergic, and 5-HT2 receptors.

Epinastine does not penetrate the blood-brain barrier and is not expected to induce adverse CNS effects.

USES: This medication is an antihistamine used to prevent itching of the eyes caused by allergies (allergic conjunctivitis).

Generic name: epinastine HCl
Pronunciation: (EP-i-NAS-teen)
Drug class: Ophthalmic Antiallergic Agents
Therapeutic class: Ophthalmic Agents

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Epinastine:

  • Allergic Conjunctivitis
  • Ocular Itching

Also known as: Allergy Eye Itch, Atopic Conjunctivitis, Itchy Eyes Due To Allergies, Ocular Itching Due To Allergies, Ocular Pruritus.

Dosing

No dosing information is available for this tab.

Drug interactions

No formal drug interaction studies have been performed.

Contraindications

Known hypersensitivity to epinastine or any ingredient in the formulation.

Adverse reactions

Adverse ocular effects reported in approximately 1-10% of patients include ocular burning, folliculosis, hyperemia, and pruritus.

The most frequently reported adverse nonocular effect is infection (e.g., cold symptoms, upper respiratory infections), which occurred in approximately 10% of patients. Other adverse nonocular effects reported in approximately 1-3% of patients include headache, rhinitis, sinusitis, increased cough, and pharyngitis.

Some events may be related to the underlying ocular disease rather than epinastine.

Precautions

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ICD codes

CodeTypeDescription
Allergic conjunctivitis
H10.1ICD10CMAcute atopic conjunctivitis
H10.10ICD10CMAcute atopic conjunctivitis, unspecified eye
H10.11ICD10CMAcute atopic conjunctivitis, right eye
H10.12ICD10CMAcute atopic conjunctivitis, left eye
H10.13ICD10CMAcute atopic conjunctivitis, bilateral
H10.44ICD10CMVernal conjunctivitis
H10.45ICD10CMOther chronic allergic conjunctivitis
H16.26ICD10CMVernal keratoconjunctivitis, with limbar and corneal involvement
H16.261ICD10CMVernal keratoconjunctivitis, with limbar and corneal involvement, right eye
H16.262ICD10CMVernal keratoconjunctivitis, with limbar and corneal involvement, left eye
H16.263ICD10CMVernal keratoconjunctivitis, with limbar and corneal involvement, bilateral
H16.269ICD10CMVernal keratoconjunctivitis, with limbar and corneal involvement, unspecified eye
Ocular itching
H57.89ICD10CMOther specified disorders of eye and adnexa
L29.8ICD10CMOther pruritus

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data