Best Allergy Eye Drops in Australia: Zaditen vs Naphcon-A vs Cromo-Fresh (2026 Guide)
At a Glance
For most people with allergic eye symptoms, Zaditen offers the best balance of fast relief and long-lasting prevention. If you mainly need to prevent symptoms before allergy season hits, Cromo-Fresh or Opticrom are cheaper options. Naphcon-A works fastest for red, swollen eyes but should only be used short-term.
Zaditen (ketotifen) — dual-action antihistamine and mast cell stabiliser, up to 12 hours relief per dose
Cromo-Fresh (sodium cromoglycate) — affordable preventative drops, widely available from ~$10-14
Why Allergy Eye Drops Matter
If you have hay fever, there is a good chance your eyes cop the worst of 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 deliver the active ingredient directly to where you need it most.
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
- •Active ingredient and mechanism: How each drop works to control allergy symptoms.
- •Speed of onset: How quickly it relieves itching, redness, and watering.
- •Duration of action: How long one dose lasts before you need to re-apply.
- •Safety for long-term use: Whether the drops are suitable for daily use throughout allergy season.
- •Contact lens compatibility: Whether you can use the drops while wearing soft contact lenses.
- •Value for money: Approximate price per dose at major Australian pharmacies.
- •TGA 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.
Zaditen Eye Drops (Ketotifen)
Antihistamine eye drops for relief and prevention of itchy eyes due to hay fever and allergies. Provides up to 12 hours of relief.
Pros
- Dual-action: both relieves and prevents symptoms
- Up to 12 hours per dose — only twice-daily application needed
- Safe for long-term seasonal use
- Preservative-free single-dose units available (better for sensitive eyes)
- Suitable for adults and children 3+
Cons
- More expensive than cromoglycate-based drops
- May cause brief mild stinging on application
- Not to be used while wearing soft contact lenses (wait 15 minutes after applying before reinserting)
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.
Naphcon-A Allergy Eye Drops
Combination antihistamine and decongestant eye drops for fast relief of red, itchy, watery eyes caused by allergies.
Pros
- Fastest visible relief — noticeably reduces redness within minutes
- Combination formula tackles redness, itch, and watering simultaneously
- Widely available at pharmacies and some supermarkets
Cons
- Short-term use only (3-5 days maximum) due to rebound redness risk
- Not suitable for children under 6 years
- Contains preservatives — not ideal for very sensitive eyes
- Not suitable with soft contact lenses
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).
Cromo-Fresh Eye Drops (Sodium Cromoglycate)
Mast cell stabiliser eye drops for prevention and treatment of allergic conjunctivitis. Best when used regularly before and during allergy season.
Opticrom Eye Drops (Sodium Cromoglycate)
Mast cell stabiliser eye drops for prevention and treatment of allergic conjunctivitis. Use regularly before and during allergy season for best results.
Pros
- Excellent safety profile — very few side effects
- Safe for long-term use throughout allergy season
- Affordable — often the cheapest medicated allergy eye drops
- Safe for children aged 2 years and over (Opticrom) or 6+ (Cromo-Fresh — check label)
- Available preservative-free
Cons
- Must be used 4 times daily for full effect — less convenient than Zaditen
- Takes several days to reach peak effectiveness
- Less effective for acute symptom relief compared to antihistamine drops
- Not great as a rescue drop — better as a preventative
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.
Systane Lubricant Eye Drops
Lubricating eye drops for relief of dry, irritated eyes. Helps flush allergens and provides soothing moisture. Available in preservative-free single-dose units.
Pros
- Preservative-free options avoid lens-damaging chemicals
- Lubricating drops can be used as often as needed during the day
- Systane helps flush allergens off the lens and eye surface
- Zaditen PF gives long-lasting relief (up to 12 hours) from just twice-daily application
Cons
- Must remove contact lenses before applying Zaditen (wait 15 minutes to reinsert)
- Single-dose units are more expensive than multidose bottles
- Requires planning around lens wear schedule
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.
Albalon-A Allergy Eye Drops
Combination antihistamine and decongestant eye drops for fast relief of red, itchy, watery eyes due to allergies. For short-term use only.
Pros
- Often cheaper than Naphcon-A for the same active ingredients
- Fast relief from redness and itching
- Widely available at pharmacies
Cons
- Short-term use only (3-5 days) — same rebound risk as Naphcon-A
- Contains preservatives
- Not suitable for children under 6
- Not suitable with contact lenses
Allergy Eye Drops Comparison Table
| Product | Active Ingredient | Type | Onset | Dosing | Contact Lens Safe? | Approx. Price |
|---|---|---|---|---|---|---|
| Zaditen | Ketotifen 0.025% | Antihistamine + mast cell stabiliser | Minutes | Twice daily | Remove lenses first; wait 15 min | $15-20 |
| Naphcon-A | Pheniramine + naphazoline | Antihistamine + vasoconstrictor | Minutes | Up to 4x daily (max 3-5 days) | No | $12-16 |
| Albalon-A | Pheniramine + naphazoline | Antihistamine + vasoconstrictor | Minutes | Up to 4x daily (max 3-5 days) | No | $10-14 |
| Cromo-Fresh | Sodium cromoglycate 2% | Mast cell stabiliser | Days (preventative) | 4x daily | Remove lenses first | $10-14 |
| Opticrom | Sodium cromoglycate 2% | Mast cell stabiliser | Days (preventative) | 4x daily | Remove lenses first | $12-16 |
| Systane (lubricant) | Polyethylene glycol / propylene glycol | Lubricant / artificial tears | Immediate comfort | As needed | Yes (PF versions) | $10-18 |
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:
- •Wash your hands thoroughly with soap and water before handling the bottle or your eyes.
- •Tilt your head back slightly and look up at the ceiling.
- •Use one finger to gently pull down your lower eyelid to create a small pocket.
- •Hold the dropper above the pocket — do not let the tip touch your eye, eyelashes, or fingers.
- •Squeeze one drop into the pocket formed by the lower lid.
- •Close 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.
- •Wait at least 5 minutes between different eye drops if you are using more than one type.
- •Replace the cap immediately. Do not wipe or rinse the dropper tip.
Hygiene Matters
Never share eye drops between people. Discard multidose bottles 4 weeks after opening (or as stated on the label). Single-dose units should be used immediately after opening and any leftover solution discarded.
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:
- •Eyes 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.
- •Eyes plus nose, sneezing, or throat: Start with an antihistamine tablet. If your eye symptoms are not adequately controlled, add allergy eye drops on top.
- •Severe 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.
- •Preventative 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.
Safe to Combine
It is safe to use allergy eye drops and oral antihistamine tablets together. The eye drops act locally and very little is absorbed into the bloodstream. Your pharmacist can confirm there are no specific interactions with your other medicines.
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:
- •Eye pain (not just itching or irritation) — especially if sharp or deep
- •Changes in your vision, such as blurring that does not clear with blinking
- •Sensitivity to light (photophobia)
- •Thick yellow or green discharge — this suggests bacterial infection, not allergy
- •Symptoms in only one eye (allergic conjunctivitis almost always affects both eyes)
- •Symptoms that do not improve after 2 weeks of appropriate OTC treatment
- •A recent eye injury or foreign body sensation
- •Swelling that extends beyond the eyelid to the cheek or forehead
Important
Never use allergy eye drops to treat eye redness or pain from an unknown cause. If your symptoms are not clearly related to a known allergy trigger, get your eyes checked before self-treating.
Special Populations
Children
Zaditen is approved for children aged 3 years and over. Sodium cromoglycate drops (Opticrom) are generally approved from age 2. Naphcon-A and Albalon-A are not recommended for children under 6. Always check the product label for age-specific guidance. 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
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.
Disclaimer
This article is for informational purposes only and does not constitute medical advice. Always read the label and follow the directions for use. If symptoms persist, talk to your health professional. See your pharmacist or GP for advice tailored to your situation.
