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- Thealoz Duo Eye Drops - 10ml
Thealoz Duo Eye Drops 10ml are preservative-free lubricating eye drops formulated to relieve symptoms of moderate to severe dry eyes.
Developed by Théa, Thealoz Duo combines trehalose 3% and sodium hyaluronate 0.15% to help protect, hydrate and lubricate the surface of the eye.
The dual-action formulation helps maintain moisture and supports the eye's natural tear film, providing comfort for people experiencing persistent dryness, irritation or a gritty sensation.
Thealoz Duo is suitable for use with contact lenses and comes in a convenient multidose bottle containing approximately 300 drops.
What Is Thealoz Duo Used For?
Thealoz Duo can help relieve symptoms associated with:
- Dry eyes: Helps restore moisture to the eye's surface.
- Gritty eyes: Reduces discomfort associated with insufficient lubrication.
- Burning or irritated eyes: Helps soothe dryness-related irritation.
- Tired eyes: Supports eye comfort during prolonged screen use.
- Environmental dryness: Helps relieve symptoms associated with air conditioning, central heating, wind and dry air.
- Contact lens discomfort: Helps improve lubrication and comfort for contact lens wearers.
- Persistent dry-eye symptoms: Provides hydration and surface protection for moderate to severe dry eyes.
Key Benefits
Dual-Action Dry-Eye Relief
The combination of trehalose and sodium hyaluronate provides both surface protection and lubrication.
Preservative-Free Formula
Thealoz Duo contains no preservatives, making it suitable for people who require frequent eye lubrication or are sensitive to certain preservatives.
Long-Lasting Hydration
Sodium hyaluronate helps retain moisture on the eye's surface and supports tear-film stability.
Protects the Eye's Surface
Trehalose helps protect cells on the ocular surface against stress associated with dryness.
Suitable for Contact Lens Wearers
Thealoz Duo can be used while wearing contact lenses, according to the manufacturer's instructions.
Convenient Multidose Bottle
The 10ml bottle is designed to deliver approximately 300 drops while maintaining a preservative-free formulation.
How Does Thealoz Duo Work?
Thealoz Duo contains two complementary ingredients.
Trehalose 3% is a naturally occurring sugar with protective properties. It helps support cells on the eye's surface when exposed to dehydration and environmental stress.
Sodium hyaluronate 0.15% is a lubricating substance that binds water and helps maintain a stable moisture layer across the eye.
Together, these ingredients help relieve dryness and improve ocular comfort.
Main Ingredients
Trehalose – 3% (3g per 100ml)
Helps protect the ocular surface against dehydration-related stress.
Sodium Hyaluronate – 0.15% (0.15g per 100ml)
Helps lubricate the eye and retain moisture.
Other Ingredients
The formulation also contains:
- Sodium chloride
- Trometamol
- Hydrochloric acid
- Water for injections
Thealoz Duo is preservative-free and phosphate-free.
Always check the instructions supplied with your product for the current ingredient list.
Recommended Dosage
The usual recommended application is one drop into each affected eye, 4–6 times daily, or as advised by an eye-care professional.
Application Instructions
- Wash and dry your hands before using the drops.
- Remove the protective cap from the bottle.
- Tilt your head backwards slightly.
- Gently pull down your lower eyelid to create a small pocket.
- Hold the bottle above your eye without touching the eye or eyelashes.
- Instil one drop into the affected eye.
- Blink gently to distribute the solution.
- Repeat in the other eye if required.
- Replace the cap securely after use.
Using Thealoz Duo With Contact Lenses
Thealoz Duo is suitable for contact lens wearers and may be applied while lenses are in place.
Follow the manufacturer's instructions and seek advice if you experience persistent contact lens discomfort.
Using Other Eye Treatments
If you use additional eye drops or eye medicines, leave an appropriate interval between products.
The manufacturer's instructions generally recommend waiting at least 10 minutes between different eye preparations.
Ask your pharmacist or optometrist if you are unsure about the correct order of application.
Thealoz Duo is generally well tolerated.
Occasionally, users may experience:
- Temporary blurred vision after application.
- Mild stinging or irritation.
- Brief eye discomfort.
- Sensitivity to an ingredient.
If symptoms persist or worsen, stop using the product and seek professional advice.
Seek urgent medical attention if you experience sudden vision changes, severe eye pain or significant light sensitivity.
Frequently asked questions
What is Thealoz Duo?
Thealoz Duo is a preservative-free lubricating eye drop containing trehalose 3% and sodium hyaluronate 0.15%.
What is Thealoz Duo used for?
It is used to relieve symptoms of dry eyes, including irritation, grittiness and discomfort.
How does Thealoz Duo work?
It combines surface protection from trehalose with moisture retention and lubrication from sodium hyaluronate.
What is trehalose?
Trehalose is a naturally occurring sugar that helps protect cells against dehydration-related stress.
What is sodium hyaluronate?
Sodium hyaluronate is a water-binding lubricant that helps maintain moisture on the eye's surface.
Can Thealoz Duo be used with other eye drops?
Yes, in many cases. Leave the recommended interval between preparations and seek professional advice if using prescription eye medicines.


