What is Tetrahydrozoline hydrochloride used for?

Tetrahydrozoline hydrochloride is used to relieve redness in the eyes caused by minor irritation.

How many drops of Tetrahydrozoline hydrochloride should I use?

You should instill 1 to 2 drops into the affected eye(s) at a time.

How often can I use Tetrahydrozoline hydrochloride eye drops?

You can use the drops up to 4 times every day.

Is Tetrahydrozoline hydrochloride an oral medication?

No, this medication is for topical use in the eyes only.

Does Tetrahydrozoline hydrochloride help with eye inflammation?

The drug is associated with treating inflammation and redness in the eye.

What brand name is Tetrahydrozoline hydrochloride sold under?

One brand name for this medicine is Medics Choice Eye Drops Original Redness Reliever.

Tetrahydrozoline Hydrochloride | CAS 522-48-5 | BJORNXNYWNIWEY

Loading compound...

Vasoconstrictor (eye redness reliever)

Tetrahydrozoline hydrochloride is a topical medicine used to relieve eye redness caused by minor irritation. It works as a vasoconstrictor, meaning it helps narrow the blood vessels in the eye to reduce redness.

How it worksThis drug acts as an alpha-adrenergic receptor agonist, which helps shrink swollen blood vessels in the eye.

Brand names:Medics Choice Eye Drops Original Redness Reliever

Used for

Relieving eye redness from minor irritation

Conditions

PterygiumInflammation

Class

Adrenergic (vasoconstrictor)Vasoconstrictor (eye redness reliever)Ocular

How to take

FormsEye drops

RoutesOphthalmic (into the eye)

Put 1 to 2 drops in the affected eye(s) up to 4 times a day.

Talk to your doctor

Questions to ask

·Is this eye drop safe for my specific eye condition?
·How long can I use these drops before seeing a doctor?

Educational summary derived from FDA labeling, AI-assisted. Not medical advice — consult a healthcare professional. Updated 2026-04-25.

How to take

Talk to your doctor

Frequently asked questions (6)