Label: PROPARACAINE HYDROCHLORIDE- proparacaine hydrochloride solution/ drops

Proparacaine hydrochloride ophthalmic solution USP, 0.5% is a local anesthetic for ophthalmic instillation. Each mL of sterile aqueous solution contains active ingredient: proparacaine hydrochloride 5 mg (0.5%) and inactive ingredients: glycerin (tonicity agent), benzalkonium chloride, 0.01% (preservative) and water for injection (vehicle). The pH may be adjusted with hydrochloric acid and/or sodium hydroxide. At the time of manufacture, the air in the container is replaced by nitrogen.

Proparacaine hydrochloride is designated chemically as 2-(Diethylamino) ethyl 3-amino-4-propoxybenzoate monohydrochloride.

Graphic formula:

C 16H 26N 2O 3•HCl MW 330.85 CAS-5875-06-9

Proparacaine hydrochloride ophthalmic solution is a rapid acting local anesthetic suitable for ophthalmic use. With a single drop, the onset of anesthesia occurs in approximately 13 seconds and persists for 15 minutes or longer.

The main site of anesthetic action is the nerve cell membrane where proparacaine interferes with the large transient increase in the membrane permeability to sodium ions that is normally produced by a slight depolarization of the membrane. As the anesthetic action progressively develops in a nerve, the threshold for electrical stimulation gradually increases and the safety factor for conduction decreases; when this action is sufficiently well developed, block of conduction is produced.

The exact mechanism whereby proparacaine and other local anesthetics influence the permeability of the cell membrane is unknown; however, several studies indicate that local anesthetics may limit sodium ion permeability by closing the pores through which the ions migrate in the lipid layer of the nerve cell membrane. This limitation prevents the fundamental change necessary for the generation of the action potential.

Proparacaine Hydrochloride Ophthalmic solution is indicated for topical anesthesia in ophthalmic practice. Representative ophthalmic procedures in which the preparation provides good local anesthesia include measurement of intraocular pressure (tonometry), removal of foreign bodies and sutures from the cornea, conjunctival scraping in diagnosis and gonioscopic examination; it is also indicated for use as a topical anesthetic prior to surgical operations such as cataract extraction.

This preparation is contraindicated in patients with known hypersensitivity to any component of the solution.

For topical ophthalmic use only.

Prolonged use of a topical ocular anesthetic may produce permanent corneal opacification with accompanying loss of visual.

Proparacaine hydrochloride ophthalmic solution is indicated for administration under the direct supervision of a

healthcare provider. Proparacaine hydrochloride ophthalmic solution is not intended for patient self-administration.

Pupillary dilation or cycloplegic effects have rarely been observed with proparacaine hydrochloride. The drug appears to be safe for use in patients sensitive to other local anesthetics, but local or systemic sensitivity occasionally occurs.

Instillation of proparacaine in the eye at recommended concentration and dosage usually produces little or no initial irritation, stinging, burning, conjunctival redness, lacrimation or increased winking. However, some local irritation and stinging may occur several hours after the instillation. Rarely, a severe, immediate-type, apparently

hyperallergic corneal reaction may occur which includes acute, intense and diffuse epithelial keratitis; a gray, ground-glass appearance; sloughing of large areas of necrotic epithelium; corneal filaments and, sometimes, iritis with descemetitis. Allergic contact dermatitis with drying and fissuring of the fingertips has been reported.

Softening and erosion of the corneal epithelium and conjunctival congestion and hemorrhage have been reported.

To report SUSPECTED ADVERSE REACTIONS, contactMicro Labs USA, Inc.,at 1-855-839-8195 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Deep anesthesia as in cataract extraction:

Instill 1 drop every 5 to 10 minutes for 5 to 7 doses.

Removal of sutures:

Instill 1 or 2 drops 2 or 3 minutes before removal of stitches.

Removal of foreign bodies:

Instill 1 or 2 drops prior to operating.

Tonometry:

Instill 1 or 2 drops immediately before measurement

Proparacaine hydrochloride ophthalmic solution USP, 0.5% is supplied in a 3-piece white low density polyethylene S design container with natural low density polyethylene S design open nozzle and white color high density polyethylene S design cap with TSTR- tear off ring.

15 mL fill in 15 mL Container                       NDC 42571-497-57

Storage:

Refrigerate at 2° to 8° C. Keep bottle tightly closed. Store bottles in carton until empty to protect from light. If solution shows more than a faint yellow color, it should not be used.

Manufactured by:

Micro Labs Limited

Bangalore-560099, INDIA

Manufactured for:

Micro Labs USA, Inc.

Somerset, NJ 08873

Rev. 01/2025

NDC 42571-497-57

Rx only
Proparacaine Hydrochloride Ophthalmic Solution, USP
0.5%

For eye use only
15 mL
Sterile
Micro Labs Limited