Antazoline / Tetrahydrozoline
Antazoline/Tetrahydrozoline is an ophthalmic combination medication that provides relief from eye redness, itching, and irritation caused by allergies or minor irritations. It combines an antihistamine with a decongestant to address multiple symptoms simultaneously. This medication is available as eye drops and is typically used short-term.
An eye drop medication combining antihistamine and decongestant properties for temporary relief of allergic eye symptoms.
Key facts at a glance
- RxNorm
- 1008618
- Generic
- Antazoline / Tetrahydrozoline
- Class
- multi-ingredient
- Brands
- —
- 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, itching, and irritation due to allergic reactions, hay fever, or minor eye irritations. Commonly used for seasonal and perennial allergic conjunctivitis.
Antazoline is an H1 antihistamine that blocks histamine receptors to reduce allergic responses. Tetrahydrozoline is an alpha-adrenergic agonist that constricts conjunctival blood vessels, reducing redness and swelling.
For ophthalmic use only. Do not use for more than 3-4 days without medical supervision to avoid rebound redness. Remove contact lenses before application and wait at least 15 minutes before reinserting. Avoid contaminating the dropper tip. Not recommended for patients with narrow-angle glaucoma or certain cardiovascular conditions.
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 27, 2026. · Read our editorial policy