Best Allergy Eye Drops Australia (2026): Naphcon-A, Zaditen & Cromo-Fresh

The best over-the-counter allergy eye drops in Australia depend on your symptom pattern. For fast relief of itchy, red eyes during hay fever season, antihistamine drops such as Naphcon-A may ease symptoms within minutes. For longer-term management of allergic conjunctivitis, mast cell stabiliser drops such as Cromo-Fresh work best when started a few days before allergen exposure. Combination drops containing ketotifen (such as Zaditen) offer both antihistamine and mast cell stabilising action. If symptoms last beyond six weeks or include eye pain or vision changes, see an optometrist or GP.

Why Allergy Eye Drops Matter

If you have hay fever, there is a good chance your eyes cop the worst of it. Eye drops for hay fever and other allergies deliver the active ingredient straight to where you need it. Allergic conjunctivitis — the medical term for itchy, red, watery eyes caused by allergens like pollen, dust mites, or pet dander — affects an estimated 1 in 5 Australians. While antihistamine tablets help with sneezing and a runny nose, they often do not fully control eye symptoms. That is where allergy eye drops come in: they target the eye directly rather than treating your whole body.

But the eye drop aisle can be confusing. Some drops relieve symptoms after they start; others work best when used before exposure. Some are fine for long-term use; others should only be used for a few days. This guide breaks down the main types of allergy eye drops available over the counter in Australia, compares the most popular products, and helps you choose the right one.

How We Assessed

• radio_button_uncheckedActive ingredient and mechanism: How each drop works to control allergy symptoms.
• radio_button_uncheckedSpeed of onset: How quickly it relieves itching, redness, and watering.
• radio_button_uncheckedDuration of action: How long one dose lasts before you need to re-apply.
• radio_button_uncheckedSafety for long-term use: Whether the drops are suitable for daily use throughout allergy season.
• radio_button_uncheckedContact lens compatibility: Whether you can use the drops while wearing soft contact lenses.
• radio_button_uncheckedValue for money: Approximate price per dose at major Australian pharmacies.
• radio_button_uncheckedTGA listing: All products recommended are listed on the Australian Register of Therapeutic Goods (ARTG).

Types of Allergy Eye Drops

Not all allergy eye drops work the same way. Understanding the four main types will help you pick the right product for your situation.

Antihistamine Eye Drops

These block histamine receptors in the eye, providing fast relief from itching and watering. Ketotifen (found in Zaditen) is the standout because it also stabilises mast cells — giving it both immediate and preventative action. Onset is usually within minutes.

Mast Cell Stabilisers

Sodium cromoglycate (found in Cromo-Fresh and Opticrom) prevents mast cells from releasing histamine in the first place. They work best when started before allergen exposure and used regularly. They take several days of consistent use to reach full effect, so they are better suited to prevention than acute relief.

Combination Drops (Antihistamine + Vasoconstrictor)

Products like Naphcon-A and Albalon-A combine an antihistamine (pheniramine) with a vasoconstrictor (naphazoline). The vasoconstrictor rapidly shrinks swollen blood vessels in the eye, reducing redness. They provide the fastest visible relief but should only be used for a few days at a time — prolonged use of vasoconstrictors can cause rebound redness, where your eyes become redder than before you started.

Lubricating / Artificial Tear Drops

Products like Systane are not true allergy drops — they do not contain antihistamines or mast cell stabilisers. However, they can help by washing allergens off the eye surface and soothing dryness and irritation that often accompany allergic eyes. They are safe for unlimited use and are a good add-on to medicated drops.

Our Top Picks

1. Best Overall: Zaditen Eye Drops (Ketotifen)

Ketotifen is unique among OTC allergy eye drops because it is a dual-action agent: it blocks histamine receptors for fast symptom relief and stabilises mast cells to prevent future reactions. One dose lasts up to 12 hours, meaning twice-daily dosing is enough for most people. It is suitable for both adults and children aged 3 years and over. Zaditen is available as a multidose bottle or preservative-free single-dose units.

2. Best Fast Relief: Naphcon-A Eye Drops

Naphcon-A is the pick for short bursts of fast cosmetic and symptom relief when your eyes are red, puffy, and irritated. The pheniramine helps with itch, while naphazoline shrinks the surface blood vessels so the redness settles quickly. That same vasoconstrictor effect is why it should stay a short-term option only: use it for too many days in a row and rebound redness becomes more likely.

3. Best Preventative: Cromo-Fresh / Opticrom (Sodium Cromoglycate)

If your allergy season is predictable and you want to get ahead of symptoms, sodium cromoglycate drops are an effective and affordable option. They work by preventing mast cells in the eye from releasing histamine and other inflammatory chemicals. The trade-off is that they need to be used 4 times daily and take a few days of regular use to reach full effect. Available as Cromo-Fresh (often the cheapest option) or Opticrom (brand name).

4. Best for Contact Lens Wearers: Zaditen Preservative-Free + Systane Lubricating Drops

Contact lens wearers face a double challenge: allergens stick to lenses, worsening symptoms, and most medicated eye drops should not be applied while lenses are in. The best approach is to use Zaditen preservative-free single-dose units (remove lenses, apply, wait 15 minutes, reinsert) combined with preservative-free lubricating drops like Systane throughout the day to flush allergens and keep eyes comfortable. Preservative-free formulations are important because preservatives like benzalkonium chloride can accumulate in soft contact lenses and irritate the cornea.

5. Best Budget: Albalon-A Eye Drops

Albalon-A contains the same combination of antihistamine (pheniramine) and vasoconstrictor (naphazoline) as Naphcon-A, typically at a lower price point. It provides the same fast relief from red, itchy eyes. Like Naphcon-A, it is for short-term use only (3-5 days). If you just need occasional rescue drops for a flare-up and want to keep costs down, Albalon-A is a practical choice.

Allergy Eye Drops Comparison Table

How to Apply Eye Drops Correctly

Getting the technique right makes a real difference to how well your drops work. Follow these steps for the best results:

• radio_button_uncheckedWash your hands thoroughly with soap and water before handling the bottle or your eyes.
• radio_button_uncheckedTilt your head back slightly and look up at the ceiling.
• radio_button_uncheckedUse one finger to gently pull down your lower eyelid to create a small pocket.
• radio_button_uncheckedHold the dropper above the pocket — do not let the tip touch your eye, eyelashes, or fingers.
• radio_button_uncheckedSqueeze one drop into the pocket formed by the lower lid.
• radio_button_uncheckedClose your eye gently (do not squeeze it shut) and press lightly on the inner corner of the eye near the nose for 1-2 minutes. This blocks the tear duct and keeps the drop in the eye instead of draining into your throat.
• radio_button_uncheckedWait at least 5 minutes between different eye drops if you are using more than one type.
• radio_button_uncheckedReplace the cap immediately. Do not wipe or rinse the dropper tip.

When to Use Eye Drops vs Antihistamine Tablets (or Both)

Antihistamine tablets like cetirizine (Zyrtec), fexofenadine (Telfast), and loratadine (Claratyne) treat the whole body — sneezing, runny nose, itchy throat, and eyes. But they sometimes fall short on eye symptoms alone. Here is when to consider each approach:

• radio_button_uncheckedEyes only affected: Use allergy eye drops alone. There is no need to take a tablet if your only symptoms are itchy, red, or watery eyes.
• radio_button_uncheckedEyes plus nose, sneezing, or throat: Start with an antihistamine tablet. If your eye symptoms are not adequately controlled, add allergy eye drops on top.
• radio_button_uncheckedSevere eye symptoms: Use both a tablet and eye drops from the start. The eye drops deliver a much higher concentration of active ingredient to the eye than any tablet can.
• radio_button_uncheckedPreventative approach: If you know allergy season is coming, start cromoglycate eye drops (Cromo-Fresh or Opticrom) a week or two before symptoms typically begin, alongside your usual antihistamine tablet.

When to See an Optometrist or GP

Most allergic eye symptoms are harmless and respond well to OTC drops. However, some eye symptoms need professional assessment. See your optometrist or GP promptly if you experience any of the following:

• radio_button_uncheckedEye pain (not just itching or irritation) — especially if sharp or deep
• radio_button_uncheckedChanges in your vision, such as blurring that does not clear with blinking
• radio_button_uncheckedSensitivity to light (photophobia)
• radio_button_uncheckedThick yellow or green discharge — this suggests bacterial infection, not allergy
• radio_button_uncheckedSymptoms in only one eye (allergic conjunctivitis almost always affects both eyes)
• radio_button_uncheckedSymptoms that do not improve after 2 weeks of appropriate OTC treatment
• radio_button_uncheckedA recent eye injury or foreign body sensation
• radio_button_uncheckedSwelling that extends beyond the eyelid to the cheek or forehead

Special Populations

Children

Zaditen is approved for children aged 3 years and over. Sodium cromoglycate drops (Opticrom) are generally approved from age 2. The combination antihistamine-vasoconstrictor drops (Naphcon-A and Albalon-A) are not recommended for young children — the minimum age varies, so always check the product label before use. If your child has persistent eye symptoms, see your GP or paediatric optometrist for personalised advice.

Pregnancy and Breastfeeding

The safety data for allergy eye drops during pregnancy is limited. Sodium cromoglycate is generally considered one of the safer options due to its minimal systemic absorption, but you should always consult your GP or pharmacist before using any eye drops during pregnancy or breastfeeding.

Frequently Asked Questions

Which eye drop is best for eye allergy in Australia?

There is no single best drop for everyone — it depends on your symptom pattern. For all-round daily relief and prevention, dual-action ketotifen drops (Zaditen) suit most people. For fast relief of red, irritated eyes over a few days, a combination drop like Naphcon-A may help quickly. For planned, longer-term prevention, a mast cell stabiliser like Cromo-Fresh or Opticrom is a good fit. Your pharmacist can help match a drop to your symptoms.

What is the difference between antihistamine and mast cell stabiliser eye drops?

Antihistamine drops block histamine that has already been released, so they may relieve itch and watering within minutes — useful once symptoms have started. Mast cell stabilisers work earlier in the process, helping stop mast cells releasing histamine in the first place. They take several days of regular use to build up, so they work best when started before allergen exposure rather than as a rescue drop. Ketotifen (Zaditen) does both.

If Zaditen is unavailable, what are the ketotifen alternatives?

Zaditen is a brand of ketotifen eye drops, and stock can vary between pharmacies. If Zaditen is unavailable, ask your pharmacist whether a generic ketotifen eye drop is in stock, as this gives the same dual-action effect. If no ketotifen drop is available, your pharmacist may suggest a combination antihistamine drop like Naphcon-A for fast short-term relief, or a mast cell stabiliser like Cromo-Fresh or Opticrom for ongoing prevention. Check current availability with your pharmacist.

Are allergy eye drops safe for children?

Some are, depending on age and product. Zaditen is approved from age 3, and sodium cromoglycate drops (Opticrom) are generally approved from age 2. Combination antihistamine-vasoconstrictor drops (Naphcon-A, Albalon-A) are not recommended for young children — the minimum age varies, so always check the label. For a child with ongoing or worsening eye symptoms, see your GP or optometrist rather than self-treating.

How long can I use allergy eye drops before seeing a doctor?

Combination drops with a vasoconstrictor (Naphcon-A, Albalon-A) should only be used for 3-5 days at a time. Daily-use drops like Zaditen, Cromo-Fresh and Opticrom can be used through allergy season, but if your symptoms have not improved after about 2 weeks of appropriate treatment — or last beyond six weeks — see your optometrist or GP. Get checked sooner if you have eye pain, vision changes, light sensitivity or discharge.

Allergy drops vs lubricating drops — what is the difference?

Allergy drops contain a medicated active ingredient (an antihistamine, mast cell stabiliser, or both) that targets the allergic reaction. Lubricating or artificial tear drops like Systane contain no allergy medicine — they simply moisten the eye and can wash allergens off the surface. Lubricating drops can soothe irritation and be used as often as needed, but they will not control an allergic reaction on their own. The two work well together.

Can I use allergy eye drops every day?

It depends on the type. Mast cell stabilisers (Cromo-Fresh, Opticrom) and dual-action antihistamines (Zaditen) are designed for daily use throughout allergy season. Combination drops containing vasoconstrictors (Naphcon-A, Albalon-A) should only be used for 3-5 days at a time to avoid rebound redness. Lubricating drops like Systane can be used as often as needed.

Can I use allergy eye drops with contact lenses?

Most medicated eye drops should not be applied while soft contact lenses are in. Remove your lenses before applying drops and wait at least 15 minutes (or as directed on the label) before reinserting. Preservative-free lubricating drops are the exception — many are safe to use over contact lenses. Check the specific product label or ask your pharmacist.

How quickly do allergy eye drops work?

Antihistamine drops (Zaditen) and combination drops (Naphcon-A, Albalon-A) typically start working within a few minutes. You should feel noticeable itch relief within 3-5 minutes. Mast cell stabiliser drops (Cromo-Fresh, Opticrom) are preventative and take several days of regular use to reach full effect — they are not designed as rescue drops.

Are there prescription-only allergy eye drops that are stronger?

Yes. If OTC drops are not controlling your symptoms, your GP or ophthalmologist can prescribe stronger options such as olopatadine (Patanol), azelastine, or short courses of corticosteroid eye drops. Prescription drops are typically reserved for moderate-to-severe allergic conjunctivitis that does not respond to OTC treatment.

Can I use eye drops and antihistamine tablets at the same time?

Yes. This is a common and safe combination. Oral antihistamines treat systemic symptoms (sneezing, runny nose, itch) while eye drops target local eye symptoms. They work through different routes and complement each other well. Check with your pharmacist if you are unsure about your specific combination.

What is the difference between Cromo-Fresh and Opticrom?

Both contain the same active ingredient — sodium cromoglycate 2%. The main difference is branding and price. Cromo-Fresh is typically the more affordable option. Opticrom may be more widely stocked. They work identically, so choose whichever is cheaper or more readily available at your pharmacy.