Curine Eye Drops 15ml (Naphazoline Hydrochloride)

Drug Class: Ocular Vasoconstrictor — Alpha-Adrenergic Agonist | Form: Eye Drops (Ophthalmic Solution) | Prescription Status: Over-the-Counter (OTC) — DRAP Registered

What is Curine Eye Drops 15ml?

Curine Eye Drops 15ml contains Naphazoline Hydrochloride, a medicine used to quickly relieve redness, itching, and irritation in the eyes caused by minor everyday irritants. It belongs to a group of medicines called vasoconstrictors — medicines that narrow the small blood vessels on the surface of the eye to reduce visible redness and puffiness rapidly. When eyes become red and irritated from dust, smoke, swimming, prolonged screen use, or environmental pollutants, the tiny blood vessels on the white surface of the eye (sclera) widen and become more visible — causing the characteristic red or bloodshot appearance. Curine Eye Drops work within minutes by narrowing these blood vessels and restoring the normal white appearance of the eye. They provide fast, temporary symptomatic relief and are available without a prescription for short-term use. However they must never be used for more than 72 hours continuously — and must not be used to treat eye redness caused by infection, injury, glaucoma, or any serious underlying eye condition. If redness persists beyond 72 hours, always consult a doctor.

What is Curine Eye Drops Used For?

Curine Eye Drops 15ml is indicated for the temporary relief of the following conditions:

• Eye Redness from Environmental Irritants — redness and irritation caused by dust, smoke, pollen, wind, or air pollution (دھول، دھواں، یا آلودگی سے آنکھوں کی لالی)
• Screen-Related Eye Redness — redness and tired-looking eyes caused by prolonged use of computers, smartphones, tablets, or television (اسکرین کے لمبے استعمال سے آنکھوں کی لالی)
• Swimming-Induced Eye Redness — redness and irritation caused by chlorine or salt water in swimming pools or the sea
• Minor Eye Irritation and Itching — temporary itching, stinging, or discomfort caused by minor, non-infectious environmental factors
• Eye Congestion from Allergic Irritation — temporary redness and congestion associated with mild eye allergy symptoms caused by identifiable environmental triggers
• Cosmetic Redness Relief — short-term whitening of red or bloodshot eyes caused by fatigue, minor irritation, or environmental exposure

How Does Curine Eye Drops Work?

Naphazoline Hydrochloride works through a specific and well-understood pharmacological mechanism:

Alpha-Adrenergic Vasoconstriction: Naphazoline is an alpha-adrenergic agonist — meaning it mimics the action of adrenaline on alpha-adrenergic receptors located in the walls of small blood vessels. The conjunctiva — the thin membrane covering the white of the eye — contains a dense network of tiny blood vessels called conjunctival capillaries and venules. When the eye is irritated by dust, smoke, chemicals, or other triggers, these vessels dilate (widen) in response to the irritation — allowing more blood to flow to the area as part of the body's natural inflammatory response. This dilation is what makes the eye appear red or bloodshot. When Naphazoline is applied as eye drops, it binds directly to the alpha-adrenergic receptors in the walls of these conjunctival blood vessels. This binding causes the smooth muscle in the vessel walls to contract — narrowing the vessel diameter (vasoconstriction). As the blood vessels narrow, less blood is visible through the conjunctiva and the redness fades rapidly — typically within 2 to 10 minutes of application. The effect usually lasts for 3 to 4 hours. Importantly, Naphazoline provides symptomatic relief only — it does not treat the underlying cause of the redness. Once the effect wears off, redness may return if the underlying irritant or cause has not been addressed.

Rebound Redness — An Important Warning: With repeated or prolonged use beyond 72 hours, Naphazoline can cause a phenomenon called rebound congestion — also known as rebound hyperaemia. When the vasoconstricting effect wears off after prolonged use, the blood vessels respond by dilating even more widely than before — causing the eyes to appear redder than they were originally. This can create a cycle where the patient uses more and more drops to control the worsening redness, leading to dependence on the drops and increasingly severe rebound redness. This is the primary reason Curine Eye Drops must never be used for more than 72 hours continuously.

Dosage and Administration

⚠️ For use in the eye only — never swallow eye drops. Do not use for more than 72 hours (3 days) without consulting a doctor. Do not use more frequently than prescribed — overuse causes rebound redness which makes the eyes worse over time.

How to Apply Curine Eye Drops Correctly:

1. Wash your hands thoroughly with soap and water before handling the bottle
2. Remove the cap carefully
3. Tilt your head backward and look upward toward the ceiling
4. Gently pull the lower eyelid downward with a clean finger to create a small pocket between the eyelid and the eye
5. Hold the bottle upside down just above the eye — do not let the dropper tip touch the eye, eyelashes, or any surface — this keeps the bottle sterile
6. Squeeze the bottle gently to release 1 to 2 drops into the lower eyelid pocket
7. Close the eye gently and press the inner corner of the eye near the nose with a clean finger for 1 to 2 minutes — this reduces drainage of drops into the throat and minimises any systemic absorption
8. Gently wipe away any excess drops from around the eye with a clean tissue
9. Repeat for the other eye if both eyes are affected
10. Replace the cap tightly after every use

• Do not use for more than 72 hours continuously — if redness persists beyond this, stop the drops and consult a doctor
• Do not use more than 4 times in any 24-hour period
• Do not use while wearing soft contact lenses — remove lenses before application and wait at least 15 minutes before reinserting
• If using other eye drops at the same time, wait at least 5 minutes between different preparations

Active Ingredient

Please check the product label or ask your pharmacist for the exact concentration per ml of the specific pack dispensed to you.

Who Should NOT Use Curine Eye Drops?

Do not use these drops if you:

• Are allergic to Naphazoline Hydrochloride or any other ingredient in this preparation
• Have narrow-angle glaucoma or are at risk of narrow-angle glaucoma (تنگ زاویے کا گلوکوما) — vasoconstrictors can trigger a dangerous acute glaucoma attack in susceptible individuals
• Have open-angle glaucoma — unless specifically approved by your eye specialist
• Have serious eye disease — including corneal ulcers, uveitis, or any diagnosed eye condition causing the redness — Naphazoline only relieves redness symptoms and does not treat underlying eye disease
• Have eye infection or injury — redness from bacterial, viral, or fungal eye infection or from eye trauma requires proper medical diagnosis and treatment — not vasoconstrictor drops
• Are taking Monoamine Oxidase Inhibitors (MAOIs) — a type of antidepressant — or have taken them within the last 14 days
• Are under 12 years of age — Naphazoline can cause serious CNS depression and even coma in young children from even small amounts of systemic absorption — use in children requires specific medical supervision
• Are pregnant or breastfeeding — consult your doctor before use

Tell your doctor or pharmacist before use if you have:

• High blood pressure (بلند فشارِ خون) — Naphazoline has a sympathomimetic action and although absorption from eye drops is low, caution is advised in patients with poorly controlled hypertension
• Heart disease or irregular heartbeat — sympathomimetic medicines can affect heart rate and rhythm
• Diabetes — Naphazoline can affect blood sugar regulation — use with caution
• Overactive thyroid (hyperthyroidism) — increased sensitivity to sympathomimetic medicines
• Enlarged prostate — alpha-adrenergic medicines can affect urinary flow
• A history of rebound eye redness with previous use of similar drops

Side Effects

Like all medicines, Curine Eye Drops can cause side effects. Because these drops are applied locally to the eye surface, most side effects are mild and limited to the eye area. Not everyone will experience them.

Common Side Effects (relatively frequent):

• Mild temporary stinging or burning sensation immediately after applying the drops — usually settles within 1 to 2 minutes
• Mild temporary blurring of vision immediately after application — clears quickly with blinking
• Pupil dilation — temporary widening of the pupil (پتلی کا وقتی طور پر پھیلنا) — may cause increased sensitivity to bright light
• Feeling of dryness or mild discomfort in the eye — particularly with frequent use
• Rebound redness (rebound hyperaemia) — the most common problem with Naphazoline. Eyes become redder than before once the drops wear off after prolonged or frequent use — the most important reason to strictly limit use to 72 hours

Serious Side Effects (less common — seek medical help immediately):

• Acute angle-closure glaucoma — sudden severe eye pain, dramatic vision loss, seeing halos around lights, headache, nausea — this is a medical emergency requiring immediate treatment (آنکھ کا شدید درد اور اچانک نظر کا کمزور ہونا — فوری طبی مدد ضروری ہے)
• Severe allergic reaction — sudden widespread rash, swelling of the face, lips, or throat, difficulty breathing — seek emergency help immediately
• Systemic sympathomimetic effects — particularly in children or if accidentally swallowed — rapid heartbeat, high blood pressure, trembling, severe headache, paleness — seek emergency help immediately. This is especially dangerous in young children
• CNS effects in children — accidental ingestion or excessive absorption in children can cause extreme drowsiness, slowed breathing, reduced body temperature, and loss of consciousness — keep out of reach of children at all times and seek emergency help immediately if a child accidentally ingests these drops
• Persistent or worsening redness — if eye redness continues or worsens beyond 72 hours of use — stop the drops immediately and consult a doctor — this may indicate an underlying condition requiring medical treatment

If you notice any serious side effects, stop using the drops immediately and go to the nearest hospital or doctor.

Drug Interactions

Curine Eye Drops are applied directly to the eye and systemic absorption is generally low with correct use. However the following interactions are important:

Always inform your doctor or pharmacist about all medicines, eye preparations, vitamins, or supplements you are currently using.

Storage Instructions

• Store below 25°C in a cool, dry place
• Keep away from direct sunlight and excessive heat
• Do not refrigerate or freeze the eye drops
• Keep out of reach of children (بچوں کی پہنچ سے دور رکھیں) — accidental ingestion in children is a medical emergency
• Do not use after the expiry date printed on the bottle or outer box
• Keep the bottle tightly closed after each use to prevent contamination
• Discard the bottle 4 weeks after first opening — do not use beyond this period even if liquid remains
• Do not use if the solution appears cloudy, discoloured, or contains any visible particles

Frequently Asked Questions

What is Curine Eye Drops used for?

Curine Eye Drops are used for the temporary, short-term relief of eye redness, irritation, and itching caused by minor everyday irritants — such as dust, smoke, swimming, prolonged screen use, and environmental pollutants. Naphazoline rapidly narrows the small blood vessels on the white of the eye to reduce visible redness within minutes. They provide symptomatic relief only — they do not treat the underlying cause of the redness.

Why must I not use Curine Eye Drops for more than 72 hours?

Using Naphazoline Eye Drops for longer than 72 hours causes a problem called rebound congestion or rebound hyperaemia. When the vasoconstricting effect wears off after repeated use, the blood vessels in the eye react by dilating more widely than they were originally — making the eyes appear even redder than before. This creates a cycle where more and more drops are needed to keep the redness at bay, and the eyes become increasingly red between doses. Over time, this can lead to a form of dependence on the drops. Strictly limiting use to 72 hours prevents this cycle from developing.

My eyes are still red after 3 days of using Curine — what should I do?

Stop using Curine Eye Drops immediately and consult a doctor. Persistent redness beyond 72 hours that is not relieved by short-term vasoconstrictor drops suggests the redness may be caused by something more than a minor irritant — such as a bacterial, viral, or allergic eye condition, dry eye disease, uveitis, or another underlying eye problem. Continuing to use Curine beyond this point will only cause rebound redness and may delay diagnosis and proper treatment of the real cause.

Can children use Curine Eye Drops?

Curine Eye Drops are not recommended for children under 12 years of age without specific medical supervision. Naphazoline is a sympathomimetic medicine that can cause serious systemic effects in young children — including extreme drowsiness, slowed breathing, very low body temperature, and in severe cases loss of consciousness — even from small amounts absorbed through the eye or accidentally swallowed. Always keep this product completely out of reach of children. If a child accidentally ingests or applies these drops, seek emergency medical help immediately.

Can I use Curine Eye Drops with my contact lenses in?

No. You must remove soft contact lenses before applying Curine Eye Drops. Components of the drops can be absorbed into soft lens material and accumulate to levels that cause eye irritation or damage the lenses. After applying the drops, wait at least 15 minutes before reinserting your contact lenses. Hard or rigid gas-permeable lenses should also be removed before application.

I have been using red-eye drops regularly for weeks — is this a problem?

Yes — this is a significant concern. Regular long-term use of Naphazoline or similar vasoconstrictor eye drops almost certainly means you have developed rebound redness and possibly dependence on the drops. The underlying redness is very likely being made worse by the drops themselves at this point. You should stop the drops and see an eye doctor as soon as possible. Your doctor can diagnose the true cause of your persistent redness — which may be dry eye syndrome, chronic allergy, blepharitis, or another treatable condition — and prescribe the appropriate treatment. Stopping vasoconstrictor drops after prolonged use may temporarily make the eyes look redder before they improve — but this is a normal part of recovery.

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⚕️ Medical Disclaimer: This product description is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor or pharmacist if your eye symptoms are severe, persistent beyond 72 hours, or worsening. Do not use this product as a substitute for a proper medical eye examination.

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DRAP Registered | Over-the-Counter (OTC) | For external use in the eye only | Do not use for more than 72 hours | Keep out of reach of children