Tetrahydrozoline Hydrochloride
Tetrahydrozoline Hydrochloride is a topical vasoconstrictor medication that works by narrowing blood vessels in the eyes or nasal passages. It is commonly found in over-the-counter eye drops for redness relief and nasal sprays for congestion, providing temporary relief from minor eye irritation or nasal stuffiness.
A topical vasoconstrictor used to relieve eye redness and nasal congestion by narrowing blood vessels in the applied area.
Key facts at a glance
- RxNorm
- 57983
- Generic
- Tetrahydrozoline Hydrochloride
- Class
- pin-variant
- Brands
- Optigene, Visine, Altazine
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Temporary relief of eye redness, minor eye irritation, and nasal congestion due to colds, allergies, or environmental irritants. Often found in over-the-counter redness-relief eye drops and nasal decongestant sprays.
As an alpha-adrenergic agonist, tetrahydrozoline stimulates receptors on blood vessel walls causing vasoconstriction (narrowing). This reduces blood flow to the area, decreasing swelling, redness, and congestion in the eyes or nasal passages.
For topical ophthalmic or nasal use only. Should not be used for extended periods (typically no more than 3-4 days) as prolonged use may cause rebound congestion or worsening symptoms. Contraindicated in patients with narrow-angle glaucoma and should be avoided in those taking MAO inhibitors. Keep out of reach of children.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy