Topicals & local formats · Contract manufacturing in India

Epinastine Hcl 0.05% · Eye drops

Discuss third-party manufacturing of Epinastine Hcl 0.05% Eye drops with Walter Healthcare, India. Share your target market, required container count and fill volume, packaging and launch timeline for a product-specific quotation.

Catalogue reference: WH-5753
Composition and strength: Epinastine Hcl 0.05%
Dosage form: Eye drops
Indicative administration route: Ophthalmic
Therapeutic navigation area: Ophthalmology & ENT
Pharmacological class: H1 antihistamine
Manufacturing stream: Non-beta-lactam

Catalogue details support an initial B2B discussion. Walter confirms the applicable unit, current licence scope, formula, target market and commercial feasibility before making a commitment.

Clinical reference

Mechanism and pharmacokinetics.

Explore the published evidence for the ingredients in Epinastine Hcl 0.05% Eye drops. Each reference identifies its source formulation and study context. Ingredient studies describe the named reference product; they do not establish the pharmacokinetics, clinical suitability or bioequivalence of this finished formulation.

How to read our product information and sources ↗

Prescribing-label excerpts

Epinastine Hydrochloride

Reference for: Epinastine Hcl. Source presentation: solution/ drops. Source route: ophthalmic.

Mechanism of action

Epinastine is a topically active, direct H1-receptor antagonist and an inhibitor of the release of histamine from the mast cell. Epinastine is selective for the histamine H1-receptor and has affinity for the histamine H2-receptor. Epinastine also possesses affinity for the ɑ1, ɑ2-, and 5-HT2-receptors.

Pharmacokinetics

Fourteen subjects, with allergic conjunctivitis, received one drop of epinastine HCl ophthalmic solution in each eye twice daily for seven days. On day seven, average maximum epinastine plasma concentrations of 0.04±0.014 ng/mL were reached after about two hours indicating low systemic exposure. While these concentrations represented an increase over those seen following a single dose, the day 1 and day 7 Area Under the Curve (AUC) values were unchanged indicating that there is no increase in systemic absorption with multiple dosing. Epinastine is 64% bound to plasma proteins. The total systemic clearance is approximately 56 L/hr and the terminal plasma elimination half-life is about 12 hours. Epinastine is mainly excreted unchanged. About 55% of an intravenous dose is recovered unchanged in the urine with about 30% in feces. Less than 10% is metabolized. The renal elimination is mainly via active tubular secretion.

Selected passages from the cited U.S. prescribing label. The studies concern the source product and populations named in each passage; they do not establish Walter-product bioequivalence, an approved indication, or the kinetics of another fixed combination. Tables and the full prescribing information remain available in the source.

Source: DailyMed: Epinastine Hydrochloride — solution/ drops

Reference accessed 2026-10-06. Label revision: 2025-03-22.

Manufacturing & packaging brief

Plan the eye-drop presentation.

Use this preparation guide for Epinastine Hcl 0.05% Eye drops. These are the decisions to resolve with the technical team before a site, process and commercial scope are confirmed.

Presentation & formulation

Identify this as an ophthalmic presentation, with concentration, fill volume and single-dose or multidose requirements. Confirm product and facility scope for the exact formulation.

Quality & technical transfer

Request review of sterile-product requirements, applicable analytical and particulate tests, delivery accuracy and container-closure integrity. Preservative and in-use requirements depend on the formulation and pack.

Review the technical documents

Packaging configuration

Describe the ophthalmic container, tip, closure and tamper evidence. Ask for the complete delivery system and supported in-use period to be assessed together.

Explore packaging options

Details to confirm for this record

Salt and strength wording: Confirm whether the stated amount refers to the named salt, hydrate or equivalent active moiety. Use the agreed expression consistently in the specification, quotation and artwork.
Concentration and pack size: The record includes a concentration or percentage expression. Confirm its complete basis, then specify the finished fill volume or weight separately. Do not treat pack size as the strength.

Quantities, MOQ & lead time

For Epinastine Hcl 0.05% Eye drops, state the container count and fill volume, target market and reorder forecast. MOQ and lead time depend on the assessed formula, process, components, testing and project readiness; request those terms in writing.

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Common questions

Before you request a quotation.

Epinastine Hcl 0.05% Eye drops

What is listed in the catalogue?

The catalogue lists Epinastine Hcl 0.05% as eye drops in its ophthalmology & ent navigation area and non-beta-lactam manufacturing stream.

How do you confirm manufacturing availability?

Send Walter your requirement for Epinastine Hcl 0.05% Eye drops. The team reviews the applicable product permission and unit, formulation and equipment fit, testing, packaging and production schedule before confirming the manufacturing scope in writing. Request the relevant product and facility documents with your enquiry.

What do I need for a quotation?

Share the exact composition and strength, eye drops presentation, target market, initial quantity, preferred pack and timing. Identify whether this is a new product, development brief or transfer.

The quotation must confirm MOQ, inclusions, prerequisites and lead time for the proposed product and site.

What is needed for Indian and export markets?

For India, share the intended brand or institutional supply requirement, pack sizes, initial order quantity and artwork needs for Epinastine Hcl 0.05% Eye drops. Confirm the applicable product permission, manufacturing unit and labelling requirements with the team.

For export, identify each destination country, proposed pack, language and registration or dossier requirements. Ask which product-specific quality and stability documents are available. Container compatibility and destination-market requirements need review; a catalogue record does not establish export registration or a shelf-life commitment.

How do I submit my enquiry?

Use the product-specific enquiry button to carry this composition and dosage form into the form. After a successful submission, a receipt reference confirms that your brief has been saved for review. Use the RFQ checklist to prepare the remaining details.

Technical document review

Which documents can I ask Walter to review?

Ask about manufacturing and packing records, specifications, analytical methods, Certificates of Analysis (COA), stability evidence, the Process Validation Protocol (PVP) and Process Validation Report (PVR). The wider checklist below covers supplier qualification, technical transfer and ongoing supply.

View the full document checklist 14 review areas

Site, licence and audit scope: Manufacturing licence, applicable product permissions, GMP certificates, Site Master File, supplier-qualification questionnaire and relevant audit responses.
Manufacturing, packing and batch release: Master Formula Record (MFR), master packing instructions, Batch Manufacturing Record (BMR), Batch Packing Record (BPR), reconciliation and authorised release records.
Process validation and continued verification: Process Validation Protocol (PVP), Process Validation Report (PVR), process performance qualification documents and continued process verification trends.
Equipment, facilities and utilities: Validation Master Plan (VMP), user requirements, DQ/IQ/OQ/PQ records, calibration and maintenance evidence for relevant equipment and utilities.
Cleaning, carryover and hold times: Cleaning Validation Protocol (CVP), Cleaning Validation Report (CVR), residue limits, recovery studies and applicable clean, dirty and process hold-time studies.
Specifications and analytical evidence: Specifications, Method of Analysis (MOA), Standard Testing Procedure (STP), Certificates of Analysis (COA), analytical validation, verification and method-transfer records.
Stability, packaging and transport: Stability protocols/reports, ongoing stability commitments, pack specifications, approved artwork, compatibility and applicable packaging or transport studies.
Development and technology transfer: Development report, technology-transfer protocol/report, gap assessment, control strategy, critical quality attributes and critical process parameters.
Quality reviews, investigations and changes: Product Quality Review (PQR) / Annual Product Review (APR), deviations, CAPA, change control, OOS/OOT trends, complaints, recalls and relevant SOP/training records.
Material suppliers and impurity risks: API/excipient supplier qualification, traceability, material COAs, relevant origin declarations and impurity risk assessments with supporting tests.
Sterile-product evidence, where applicable: Contamination Control Strategy (CCS), media-fill/aseptic simulation reports, sterilisation and filtration validation, environmental monitoring, sterility/endotoxin and container-closure integrity evidence.
Computerised systems and data integrity: Computerised-system validation, access controls, audit-trail review, backup/restore checks and relevant data-integrity procedures.
Market-specific regulatory support: Applicable dossier sections, API master-file/CEP support, bioequivalence or biowaiver evidence and Certificate of a Pharmaceutical Product (CPP/CoPP), where required and available.
Quality agreement and access arrangements: Quality/technical agreement covering responsibilities, release, changes, subcontracting, investigations, complaints, recalls, audits and document access.

Agree the list for the exact product, site, process, pack, market and project stage. QA confirms what exists, applies and may be shared; some records may require an NDA, redaction or controlled review. See document definitions and review guidance.

Important qualification

This B2B catalogue record is not proof of current approval or confirmation that Epinastine Hcl 0.05% Eye drops is available for sale. It is not prescribing information or patient advice. Any Drugs Rules status, current approval, exemption, applicable unit, licence scope, formulation, claims, brand use, destination-market registration and commercial feasibility require documentary verification and Walter's written confirmation. Read the full regulatory disclaimer.

Composition and classification are taken from Walter's product catalogue. The manufacturing guide helps buyers prepare a technical brief. Clinical references, where shown, describe the cited product and study. Manufacturing guide updated 8 October 2026.