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Apraclonidine

Phase 3

Ocular Redness | Small molecule | Ophthalmology |Alcon Inc.|Last Updated: Oct 23, 2025

Target and mechanism

ModalitySmall molecule

Also known as Apraclonidine, 0.125% Unit Dose Preservative Free

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment159

FDA Designations

No designations recorded

Clinical trial landscape

Apraclonidine · 1 trial · 1 indication

Phase 3 1
NCT06444529A Double-Masked Comparison of FID 123320 Ophthalmic Solution to Vehicle for the Reduction of Ocular RednessOcular Redness
COMPLETED159 Analytics
PHASE3COMPLETED
A Double-Masked Comparison of FID 123320 Ophthalmic Solution to Vehicle for the Reduction of Ocular Redness
Ocular RednessUnlock trial analytics

Study Endpoints

Primary Endpoints

Mean change from baseline in investigator-assessed ocular redness at 15 minutes post-instillation on Day 1
Day 1: Pretreatment; 15 minutes post-treatment

Ocular redness will be assessed by the investigator using a scale from 0 to 4 in half-unit increments (0=none; 4=extremely severe). This endpoint is co-primary with the 10 hours post-instillation endpoint.

Mean change from baseline in investigator-assessed ocular redness at 10 hours (600 minutes) post-instillation on Day 1
Day 1: Pretreatment; 10 hours (600 minutes) post-treatment

Ocular redness will be assessed by the investigator using a scale from 0 to 4 in half-unit increments (0=none; 4=extremely severe). This endpoint is co-primary with the 15 minutes post-instillation endpoint.

Secondary Endpoints

Mean change from baseline in investigator-assessed ocular redness at 1 minute post-instillation on Day 1
Day 1: Pretreatment; 1 minute post-treatment
Mean change from baseline in investigator-assessed ocular redness at 8 hours (480 minutes) post-instillation on Day 1
Day 1: Pretreatment; 8 hours (480 minutes) post-treatment
Mean change from baseline in investigator-assessed ocular redness at 12 hours (720 minutes) post-instillation on Day 1
Day 1: Pretreatment; 12 hours (720 minutes) post-treatment
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Apraclonidine Hydrochloride Ophthalmic SolutionEXPERIMENTALOne drop in each eye on Day 1, followed by 2 drops in each eye on Day 2 onward for approximately 8 weeks
VehiclePLACEBO_COMPARATOROne drop in each eye on Day 1, followed by 2 drops in each eye on Day 2 onward for approximately 8 weeks

Interventions

NameTypeDescription
Apraclonidine Hydrochloride Ophthalmic SolutionDRUGInvestigational ophthalmic solution applied topically to the eye with a dropper bottle
VehicleDRUGVehicle (inactive ingredients) applied topically to the eye with a dropper bottle
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites5

Key Inclusion Criteria: * Capable of giving signed informed consent; * Willing and able to follow all instructions and attend all study visits; * Able to self-administer eye drops- in the opinion of the investigator; * History of redness relief drop use within the last 6 months, or a desire to use ...

Countries:United States
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Frequently asked questions about Apraclonidine

What is Apraclonidine used for?

Apraclonidine is used for the reduction of ocular redness. It is an ophthalmic solution being developed as a treatment for ocular redness, a condition characterized by red or bloodshot eyes. The drug is administered as eye drops and is intended to address the cosmetic and symptomatic aspects of eye redness.

What does Apraclonidine target?

Apraclonidine is a small molecule that acts as an alpha-2 adrenergic receptor agonist. By stimulating these receptors, it causes vasoconstriction of the conjunctival blood vessels, which reduces the appearance of redness in the eyes. This mechanism is specific to the ophthalmic application for ocular redness.

Who makes Apraclonidine?

Apraclonidine is being developed by Alcon Inc., a pharmaceutical company specializing in eye care. Alcon is publicly traded under the ticker symbol ALC. The company is conducting clinical trials to evaluate the safety and efficacy of Apraclonidine for the treatment of ocular redness.

What phase is Apraclonidine in?

Apraclonidine is in Phase 3 clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. The Phase 3 trial has been completed, and the results will be used to support a potential regulatory submission for approval.

What clinical trials is Apraclonidine in?

Apraclonidine has been studied in one clinical trial registered as NCT06444529. This was a Phase 3, double-masked, placebo-controlled study titled 'A Double-Masked Comparison of FID 123320 Ophthalmic Solution to Vehicle for the Reduction of Ocular Redness.' The trial enrolled 159 participants in the United States and has been completed.

Is Apraclonidine the same as Apraclonidine Ophthalmic Solution?

Yes, Apraclonidine is also known as Apraclonidine Ophthalmic Solution, 0.125% Unit Dose Preservative Free. This formulation is specifically designed for the reduction of ocular redness. The drug is sometimes referred to by its alternative names, but they all refer to the same active ingredient and product.