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What is Opcon-A
NaphazolineThe Generic name of this drug
Treatment SummaryNaphazoline is a medication that works quickly to reduce congestion in the eyes and nose. It is found in many over the counter eye drops and nasal sprays. The drug was developed in 1942 and is used to alleviate congestion associated with colds and allergies.
AK-Conis the brand name
Opcon-A Overview & Background
Brand Name
Generic Name
First FDA Approval
How many FDA approvals?
AK-Con
Naphazoline
1974
43
Effectiveness
How Opcon-A Affects PatientsNaphazoline is a drug that can help reduce nasal or eye congestion by narrowing the blood vessels at the site of administration.
How Opcon-A works in the bodyNaphazoline is a drug that decreases congestion by narrowing the blood vessels in the area it is applied. It does this by releasing a chemical called norepinephrine that binds to receptors in the blood vessels and causes them to constrict. It can also cause rebound widening after the initial narrowing, and can lead to rhinitis medicamentosa if used for too long.
When to interrupt dosage
The suggested amount of Opcon-A is contingent upon the determined affliction, such as Eye Pain, Sinusitis and tetracycline. The measure fluctuates in agreement with the delivery system (e.g. Solution / drops or Liquid - Ophthalmic) specified in the table beneath.Condition
Dosage
Administration
Foreign body sensation in eyes
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Iritis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Photophobia
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Nasal Allergies
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Dacryocystitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Pink Eye
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Bacterial Conjunctivitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Ocular Inflammation
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Allergic Rhinitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Eye
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Eye Pain
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Nasal Congestion
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
ocular bacterial infections
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Dacryostenosis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Allergy to Tree Pollen
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
tetracycline
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Noninfective conjunctivitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Sinusitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Blepharoconjunctivitis
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
ocular vasoconstriction therapy
, 0.25 mg/mL, 0.2675 mg/mL, 0.00012 mg/mL, 0.12 mg/mL, 0.3 mg/mL, 0.1 mg/mL, 1.0 mg/mL, 0.5 mg/mL, 0.2 mg/mL, 0.00027 mL/mL, 0.01 mL/mL, 0.0125 mL/mL, 0.00015 mg/mL, 0.21 mL/mL, 0.0625 mL/mL, 0.0025 mg/mL, 0.012 %, 0.1 %, 1.0 mg, 0.051 %, 0.02675 %, 0.05 %, 0.025 %, 5.0 mg/mL, 0.03 %, 1.12 mg/mL, 0.00012 mg/mg, 0.00025 mg/mg, 0.27 mg/mL, 0.0625 mg/mL, 0.012 mg/mL, 0.01 %, 0.00376 mg/mg
, Ophthalmic, Solution / drops, Solution / drops - Ophthalmic, Solution, Solution - Ophthalmic, Liquid, Liquid - Ophthalmic, Nasal, Liquid - Nasal, Spray, Spray - Nasal, Suspension / drops, Suspension / drops - Nasal, Gel - Ophthalmic, Topical, Solution / drops - Topical, Solution / drops - Nasal
Warnings
Opcon-A ContraindicationsCondition
Risk Level
Notes
Severe Hypersensitivity Reactions
Do Not Combine
Naphazoline may interact with Pulse Frequency
Common Opcon-A Drug Interactions
Drug Name
Risk Level
Description
Iobenguane
Major
Naphazoline can cause a decrease in the absorption of Iobenguane resulting in a reduced serum concentration and potentially a decrease in efficacy.
2,5-Dimethoxy-4-ethylthioamphetamine
Minor
The risk or severity of hypertension can be increased when Naphazoline is combined with 2,5-Dimethoxy-4-ethylthioamphetamine.
5-methoxy-N,N-dimethyltryptamine
Minor
The risk or severity of hypertension can be increased when Naphazoline is combined with 5-methoxy-N,N-dimethyltryptamine.
Abediterol
Minor
The risk or severity of hypertension can be increased when Naphazoline is combined with Abediterol.
Aceclofenac
Minor
The risk or severity of hypertension can be increased when Naphazoline is combined with Aceclofenac.
Opcon-A Toxicity & Overdose RiskTaking too much naphazoline can lead to serious consequences, such as a coma, a drop in body temperature, a slow heartbeat and even death, especially in children under 6 years old. Prolonged use of naphazoline can also cause a condition called rhinitis medicamentosa when the drug is stopped. It is not known if naphazoline is safe for children under 12, elderly patients, pregnant and breastfeeding women, or if it can affect fertility.
Opcon-A Novel Uses: Which Conditions Have a Clinical Trial Featuring Opcon-A?
57 active trials are evaluating the potential of Opcon-A in alleviating Sinusitis, Dermatitis and Allergic Rhinitis.Condition
Clinical Trials
Trial Phases
Dacryostenosis
0 Actively Recruiting
Allergy to Tree Pollen
0 Actively Recruiting
Lacrimation
0 Actively Recruiting
tetracycline
0 Actively Recruiting
Dermatitis
0 Actively Recruiting
Dacryocystitis
0 Actively Recruiting
ocular vasoconstriction therapy
0 Actively Recruiting
Allergic Rhinitis
0 Actively Recruiting
ocular bacterial infections
0 Actively Recruiting
Photophobia
5 Actively Recruiting
Not Applicable, Phase 4, Phase 2
Blepharoconjunctivitis
0 Actively Recruiting
Eye Pain
2 Actively Recruiting
Not Applicable, Phase 4
Otitis Media (OM)
0 Actively Recruiting
Ocular Inflammation
3 Actively Recruiting
Phase 2, Phase 4, Phase 3
Bacterial Conjunctivitis
0 Actively Recruiting
Iritis
0 Actively Recruiting
Sinusitis
19 Actively Recruiting
Not Applicable, Early Phase 1, Phase 2, Phase 3, Phase 4
Foreign body sensation in eyes
0 Actively Recruiting
Nasal Congestion
1 Actively Recruiting
Not Applicable
Nasal Allergies
0 Actively Recruiting
Opcon-A Reviews: What are patients saying about Opcon-A?
5Patient Review
12/29/2012 I have been using Opcon A eye drops daily for over 15 years without incident until recently. Recently, I experienced a torn retina and had to have emergency laser surgery to repair it.
5Patient Review
10/16/2014 Although it may cause blurry vision for a few minutes, this is still an excellent product. It's very important not to rub your eyes, and these drops help with that immensely. I would highly recommend them to anyone dealing with allergies.
5Patient Review
7/21/2012 These are my go-to allergy drops. They work like a charm to stop the redness and itchiness I experience at night due to allergies. My doctor suggested storing them in the fridge, which really does help intensify the soothing effect of the cold drops.
5Patient Review
3/15/2018 Opcon-A was a great relief for my itchy, watery eyes. I would suggest cutting back on the number of drops used if you experience harsh side effects.
4.7Patient Review
10/10/2012 I've been using this product for about a year, and today I experienced something scary. My left pupil was very large, while my right pupil remained normal size. This gave me a headache, and made it difficult to see out of the dilated pupil. I went to the ER, but fortunately it fixed itself before long. However, I think the label should include a warning about this possible side-effect; it's not safe to drive after using these eye drops.
4.7Patient Review
5/21/2012 Itching in my eye subsided after using this treatment and I plan on using it again in the future.
4.3Patient Review
1/28/2020 I've been using this product for about two decades now and it's always worked great--until recently. In the past year or so, my eyes have started becoming redder AFTER using the drops, and my pupils have started dilating. This has made wearing contacts difficult and uncomfortable. Did the recipe for the Drops change at all?
4Patient Review
5/16/2016 I woke up with severe itching in one eye and wasn't sure if it was an allergy or conjunctivitis. I used these drops and will see if the symptoms improve or worsen in the next day or so to determine if it is pink eye. So far, there has been no dilation problem.
3Patient Review
9/29/2014 The active ingredient in this product quickly stopped the itchiness and redness in my eyes. However, I experienced very intense side effects that made my vision blurry for about twelve hours. Thankfully, this occurred on a day where I didn't have to work.
3Patient Review
1/16/2021 I experienced severe vertigo from this product. After I stopped using it for a while, the vertigo cleared up. I never would have thought that the two were related if I hadn't had such an instant reaction when I used the drops again after a month.
2.7Patient Review
1/26/2020 Pupil dilation was very intense and long lasting after just one drop, to the point of causing blurred vision. Additionally, this didn't do anything to help my itchy eyes. Overall, not a great experience.
2.3Patient Review
2/11/2014 Itchy, red left eye dilated pupil, therefore blurring vision within minutes of use. The other eye had no reaction. Shaky and nervousness after 20 minutes.
2.3Patient Review
12/3/2014 These eye drops may stop the itch, but they cause an extreme dilation of the pupil in one eye. You essentially can't see anything out of that eye for a significant period of time, so I would recommend against using this medication unless you're planning on sitting in a dark room all day.
1.7Patient Review
2/7/2022 After just one drop, my eyes became very white. There was also a burning sensation and it helped with the itching. However, by the third drop my eyes became red, weepy, and sore. I needed to use steroid drops to clear it up; apparently the ophthalmologist said this was caused by the chemical in opcon a that causes redness.
1.7Patient Review
6/4/2021 These eye drops caused my 13 year old son's eyes to turn yellow. We're hoping this clears up overnight, but if not we'll have to see the doctor. I wish the side effects had been more clear before we purchased this product.
1.7Patient Review
1/7/2022 The drops burn upon application, which is to be expected. However, they don't do much beyond that. If anything, they make the itch worse and dry out my eyes to the point of pain.
1.3Patient Review
7/17/2014 Opcon A did nothing to help my allergies and actually made my vision worse. Will never purchase again.
Patient Q&A Section about opcon-a
These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.Does Opcon-a cause pupil dilation?
"The most common side effects of Opcon-A are dilated pupils, blurred vision, and light sensitivity."
Answered by AI
What is the active ingredient in Opcon-A?
"The active ingredients in this product are naphazoline HCl and pheniramine maleate, which help to relieve redness and itchiness respectively. The inactive ingredients include benzalkonium chloride, boric acid, edetate disodium, hypromellose, purified water, sodium borate, sodium chloride, and hydrochloric acid, which all serve to either preserve the product or adjust its pH."
Answered by AI
What is Opcon-A used for?
"This medication is used to relieve eye redness, puffiness, itching, and watering that commonly occur with allergies. It does this by temporarily narrowing the blood vessels in the eye."
Answered by AI