Complete Hay Fever Treatment Guide for Australia (2026)
At a Glance
Most Australians get the best results by combining a non-drowsy antihistamine tablet with a corticosteroid nasal spray. Start treatment 1-2 weeks before pollen season for optimal control.
Corticosteroid nasal spray (Nasonex, Flixonase) — most effective single treatment for moderate-to-severe hay fever
Generic cetirizine 10mg — from ~$0.10/dose for mild symptoms
What Causes Hay Fever in Australia?
Hay fever (allergic rhinitis) affects around 4.6 million Australians — roughly 1 in 5 people. Despite the name, it has nothing to do with hay or fever. It occurs when your immune system overreacts to airborne allergens, triggering inflammation in the lining of your nose, throat, and eyes.
Australia's main hay fever triggers include:
- •Grass pollens — the number one trigger, particularly ryegrass (Lolium perenne). Ryegrass pollen is the most allergenic grass pollen in Australia and drives the spring hay fever peak.
- •Tree pollens — birch, plane trees, cypress, and olive trees release pollen earlier in the season (August to October in most regions). Wattle (Acacia) gets blamed often but is not a major allergenic pollen for most people.
- •Weed pollens — Plantain, Paterson's curse, and Pellitory (found near walls and buildings in Sydney) contribute to symptoms year-round in some areas.
- •Dust mites — a year-round (perennial) trigger in Australian homes, particularly in humid coastal areas. Dust mite allergy causes the same symptoms as pollen hay fever but does not follow a seasonal pattern.
- •Mould spores — particularly problematic in humid environments and after water damage. Peak counts often follow rain or storms.
Australian Hay Fever Season by Region
Australia does not have a single hay fever season. The timing and severity vary significantly between cities, largely driven by local grass species and climate. Here is a general guide — individual experience may vary depending on your specific allergen sensitivities.
| City / Region | Peak Grass Pollen | Key Triggers | Notes |
|---|---|---|---|
| Sydney / NSW | October - December | Ryegrass, Bahia grass, Pellitory weed | Pellitory is a year-round issue in inner-city areas |
| Melbourne / VIC | October - December | Ryegrass, couch grass | Thunderstorm asthma risk in November (see below) |
| Brisbane / QLD | September - January | Mixed subtropical grasses, Bahia grass | Longer season due to subtropical climate; mould also prominent |
| Perth / WA | September - November | Ryegrass, wattle, olive trees | Tends to peak earlier and finish sooner than eastern states |
| Adelaide / SA | October - December | Ryegrass, olive trees, cypress | Olive tree pollen a significant trigger unique to SA |
| Canberra / ACT | October - December | Ryegrass, birch trees | Birch pollen peaks September-October before grass season |
| Hobart / TAS | November - January | Ryegrass, Plantain | Generally lower pollen counts than mainland capitals |
Check Daily Pollen Forecasts
Melbourne University's School of BioSciences runs AusPollen (Melbourne Pollen Count) — a daily pollen forecast during grass pollen season. Several weather apps (BOM Weather, Weatherzone) also include pollen data. Checking the forecast helps you plan outdoor activities and medication timing.
Step-by-Step Treatment Ladder
Not all hay fever is the same. A structured treatment approach — starting simple and stepping up as needed — helps you find the right level of medication without overdoing it. This ladder is based on the Australasian Society of Clinical Immunology and Allergy (ASCIA) guidelines.
Step 1: Mild Symptoms — Non-Drowsy Antihistamine Tablet
If you have occasional sneezing, runny nose, or itchy eyes that do not significantly disrupt your day, a once-daily non-drowsy antihistamine is usually enough. These are available without a prescription from pharmacies and supermarkets.
Step 2: Moderate Symptoms — Add a Corticosteroid Nasal Spray
If antihistamine tablets alone are not controlling your symptoms — particularly nasal congestion, post-nasal drip, or reduced sense of smell — adding a corticosteroid nasal spray is the next step. Nasal sprays are actually more effective than tablets for nasal symptoms. They work by reducing inflammation directly in the nose, but take 3-7 days of regular use to reach full effect.
Step 3: Moderate-to-Severe Symptoms — Combination Therapy
For persistent or severe hay fever, using both an antihistamine tablet and a corticosteroid nasal spray together gives better results than either alone. You can also add antihistamine eye drops if itchy, watery eyes are a major problem. This combination is what most pharmacists would recommend for people who struggle through the season.
Step 4: Uncontrolled Symptoms — See Your GP
If OTC medications are not enough after 2-4 weeks of consistent use, see your GP. They can prescribe stronger options including prescription-strength nasal sprays, short courses of oral corticosteroids for severe flare-ups, or referral to an allergist for immunotherapy (desensitisation). Immunotherapy is the only treatment that can change the underlying allergy rather than just managing symptoms.
Avoid Decongestant Nasal Sprays for Hay Fever
Over-the-counter decongestant nasal sprays (like Otrivin or Drixine) should NOT be used for more than 3 days. They can cause rebound congestion (rhinitis medicamentosa), making your blocked nose worse than before. They are designed for short-term cold relief, not hay fever management.
Comparing Antihistamine Tablets
Three non-drowsy (second-generation) antihistamines dominate the Australian market. They all work by blocking histamine receptors, but they differ in potency, drowsiness risk, and price. For a detailed deep-dive, see our full guide: Best Antihistamine in Australia.
| Feature | Cetirizine (Zyrtec) | Fexofenadine (Telfast) | Loratadine (Claratyne) |
|---|---|---|---|
| Adult dose | 10mg once daily | 180mg once daily | 10mg once daily |
| Onset of action | 30-60 minutes | 1-2 hours | 1-3 hours |
| Duration | 24 hours | 24 hours | 24 hours |
| Drowsiness risk | Moderate (~10-15%) | Very low (~2%) | Low (~3-4%) |
| Potency | Strongest | Moderate | Mildest |
| Best for | Stubborn symptoms, hives | Drivers, workers needing zero drowsiness | Mild, predictable symptoms |
| Generic available? | Yes — from ~$3-5 / 30 tablets | Yes — from ~$12-15 / 30 tablets | Yes — from ~$5-8 / 30 tablets |
Zyrtec Rapid Acting Antihistamine
Fast-acting antihistamine for relief from hayfever, hives, and other allergic conditions.
Telfast 180mg Antihistamine
Non-drowsy, fast-acting antihistamine for relief of hayfever and allergic rhinitis.
Claratyne Hayfever & Allergy Relief
Non-drowsy antihistamine for 24-hour relief from hayfever and allergy symptoms.
Save Money with Generics
All three antihistamines are available as generic (pharmacy-own-brand) versions at Chemist Warehouse, Priceline Pharmacy, and other pharmacies. The TGA requires generics to demonstrate bioequivalence — meaning they contain the same active ingredient at the same dose and work the same way in your body. Always check the active ingredient name rather than the brand.
Comparing Corticosteroid Nasal Sprays
Corticosteroid nasal sprays are the single most effective OTC treatment for hay fever nasal symptoms. They reduce inflammation, swelling, and mucus production in the nasal passages. All four sprays below are available without a prescription in Australia and are TGA-listed for hay fever.
| Feature | Nasonex (Mometasone) | Flixonase (Fluticasone) | Rhinocort (Budesonide) | Beconase (Beclomethasone) |
|---|---|---|---|---|
| Dosing | Once daily | Once daily | Once or twice daily | Twice daily |
| Onset to full effect | 12-48 hours | 12 hours - 3 days | 3-7 days | 3-7 days |
| Scent/taste | Minimal | Slight floral | Minimal | Mild |
| Systemic absorption | Very low | Very low | Low | Moderate (highest of the four) |
| Approved age (OTC) | 18+ (prescription for children) | 18+ | 18+ | 18+ |
| Approximate price | ~$18-25 / 140 sprays | ~$20-28 / 120 sprays | ~$15-22 / 200 sprays | ~$12-18 / 200 sprays |
| Best for | All-rounder, fastest onset | Strong symptom relief | Good value per spray | Budget option |
Nasonex Allergy Nasal Spray
Once-daily nasal spray for prevention and treatment of nasal allergy symptoms.
Flixonase Allergy & Hayfever 24 Hour Nasal Spray
Once-daily corticosteroid nasal spray with fluticasone for 24-hour relief from hayfever and allergy nasal symptoms.
Rhinocort Hayfever & Allergy Nasal Spray
Non-drowsy corticosteroid nasal spray with budesonide for prevention and treatment of hayfever and allergic rhinitis symptoms.
Beconase Hayfever Nasal Spray
Corticosteroid nasal spray for effective prevention and treatment of hayfever symptoms.
Important: Nasal spray technique matters. Tilt your head slightly forward, aim the nozzle towards your ear (not the septum), and breathe gently through your nose as you spray. Poor technique can cause nosebleeds and reduce effectiveness. Your pharmacist can demonstrate the correct method.
Eye Drops for Hay Fever
Itchy, red, watery eyes (allergic conjunctivitis) affect the majority of hay fever sufferers but are often undertreated. While antihistamine tablets help, targeted eye drops work faster and provide better relief for eye symptoms specifically.
| Product | Active Ingredient | How It Works | Dosing | Best For |
|---|---|---|---|---|
| Zaditen | Ketotifen | Antihistamine + mast cell stabiliser | Twice daily | All-round eye allergy relief; prevention and treatment |
| Naphcon-A | Pheniramine + naphazoline | Antihistamine + decongestant | Up to 4 times daily | Fast relief of red, itchy eyes (short-term use only — max 5 days) |
| Cromo-Fresh | Sodium cromoglycate | Mast cell stabiliser | 4 times daily | Prevention — best started before symptoms; preservative-free option available |
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.
Naphcon-A Allergy Eye Drops
Combination antihistamine and decongestant eye drops for fast relief of red, itchy, watery eyes caused by allergies.
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.
Contact Lens Wearers
Most allergy eye drops should not be applied while wearing contact lenses. Remove your lenses before applying drops and wait at least 15 minutes before reinserting. Preservative-free single-dose vials (like Cromo-Fresh preservative-free) are generally preferred for lens wearers. Check the product label or ask your pharmacist.
Natural Remedies: What the Evidence Says
Many Australians want to try natural approaches for hay fever, especially when symptoms are mild. The evidence is mixed, so it helps to separate the options that are genuinely useful from those that are mostly wishful thinking.
Saline Nasal Rinses — Moderate Evidence
Rinsing the nasal passages with isotonic saline solution (using a squeeze bottle, neti pot, or product like Fess Sinus Wash) physically flushes out pollen and mucus. A Cochrane review found moderate-quality evidence that saline irrigation improves symptoms and quality of life in allergic rhinitis. It is safe, inexpensive, and can be used alongside medicated treatments. This is the one natural approach most pharmacists would endorse.
Fess Saline Nasal Spray
Non-medicated saline nasal spray to help relieve nasal and sinus congestion. Drug-free and suitable for daily use.
Local Honey — Limited Evidence
The idea is that eating local honey exposes you to small amounts of local pollen, gradually desensitising your immune system. While the concept is appealing, clinical trials have not supported this. A 2013 Malaysian randomised trial and a 2002 US study both found no significant benefit of honey over placebo for hay fever symptoms. The pollen in honey is primarily from flowers (carried by bees), not the wind-borne grass and tree pollen that causes hay fever. Honey is not harmful, but do not rely on it as your treatment.
Butterbur Extract — Limited Evidence
A few European studies suggest butterbur (Petasites hybridus) extract may reduce hay fever symptoms comparably to cetirizine. However, raw butterbur contains pyrrolizidine alkaloids, which are toxic to the liver. Only specially processed, PA-free extracts should be used, and these are not widely available or TGA-regulated in Australia. We would not recommend self-treating with butterbur without professional guidance.
Remedies to Skip
- •Vitamin C megadoses — despite widespread claims, clinical evidence for vitamin C in hay fever is weak and inconsistent.
- •Essential oils (eucalyptus, peppermint) — may provide temporary sensation of clearer breathing but do not reduce allergic inflammation. Some can irritate airways.
- •Homeopathy — multiple systematic reviews (including a 2015 Cochrane review) have found no convincing evidence that homeopathic preparations are effective for allergic rhinitis beyond placebo.
Thunderstorm Asthma: A Uniquely Australian Risk
On 21 November 2016, Melbourne experienced the world's most severe thunderstorm asthma event. A massive thunderstorm during peak ryegrass pollen season caused pollen grains to rupture into tiny fragments small enough to penetrate deep into the lungs. Over 9,500 people were hospitalised and 10 people died — many of whom had never been diagnosed with asthma.
Thunderstorm asthma can affect anyone with hay fever, even those who have never had asthma before. The risk is highest during grass pollen season (October-December) when a thunderstorm passes through an area with high pollen counts.
How to Protect Yourself
If you have hay fever and a thunderstorm is forecast during pollen season: stay indoors with windows and doors closed before and during the storm, take your antihistamine as usual, and use your preventer inhaler if you have one prescribed. The Victorian Department of Health issues epidemic thunderstorm asthma forecasts during the grass pollen season — sign up for alerts at health.vic.gov.au. If you develop sudden wheezing, chest tightness, or difficulty breathing, call 000 immediately.
Since the 2016 event, Victoria has implemented the Thunderstorm Asthma Early Warning System. If you have hay fever and live in Victoria (or any area with high ryegrass pollen), talk to your GP about whether you should carry a reliever inhaler during pollen season — even if you have never had asthma.
Prevention Tips That Actually Work
- •Start medication early — begin your antihistamine and/or nasal spray 1-2 weeks before your symptoms typically start for the best preventative effect.
- •Check the pollen forecast daily during spring and adjust your plans accordingly.
- •Shower and wash your hair before bed to remove pollen deposited during the day.
- •Dry laundry indoors during high pollen days — clothes on the line act like pollen traps.
- •Keep car and house windows closed during peak pollen times (typically early morning and late afternoon).
- •Wear wraparound sunglasses outdoors to reduce pollen contact with your eyes.
- •Use a HEPA air purifier in your bedroom if dust mites or mould are triggers.
- •Wash bedding weekly in hot water (above 55 degrees Celsius) to kill dust mites.
Special Populations
Children
Hay fever is common in Australian children and often underdiagnosed. Some antihistamine liquids and nasal sprays have age restrictions — always check the label. Corticosteroid nasal sprays for children typically require a prescription. Consult your pharmacist or GP before giving hay fever medication to children under 12.
Pregnancy and Breastfeeding
Managing hay fever during pregnancy requires extra caution. Saline nasal rinses are considered safe and are a good first option. Some antihistamines and nasal sprays may be suitable, but this must be discussed with your GP or pharmacist. Do not start or change hay fever medications during pregnancy without professional advice.
Frequently Asked Questions
Is it better to take antihistamine tablets or use a nasal spray?
It depends on your main symptoms. For predominantly nasal symptoms (congestion, sneezing, runny nose), corticosteroid nasal sprays are more effective than tablets. For itchy eyes and general allergy symptoms, antihistamine tablets work well. For moderate-to-severe hay fever, combining both gives the best results.
Why does my hay fever seem worse in Melbourne than other cities?
Melbourne has some of the highest ryegrass pollen counts in Australia, driven by the extensive grasslands north and west of the city. The combination of high pollen levels and changeable spring weather (including thunderstorm risk) makes Melbourne particularly challenging for hay fever sufferers.
Can hay fever develop later in life?
Yes. While hay fever often starts in childhood, adult-onset allergic rhinitis is common. Moving to a new area with different pollens, changes in the immune system, and increased exposure to new allergens can all trigger hay fever for the first time at any age.
How do I know if it is hay fever or a cold?
Hay fever symptoms are itchy (eyes, nose, throat), last weeks or months during pollen season, and produce clear, watery nasal discharge. Colds typically cause thicker discharge that turns yellow-green, last 7-10 days, and may include fever and body aches. If you are unsure, see our guide: Allergies vs Cold — How to Tell the Difference.
Should I take my antihistamine in the morning or at night?
If you take cetirizine (Zyrtec) and find it makes you drowsy, take it at bedtime. Fexofenadine (Telfast) and loratadine (Claratyne) can be taken at any time as they rarely cause drowsiness. The key is consistency — take it at the same time every day for the best ongoing protection.
Is immunotherapy worth considering?
Allergen immunotherapy (available as injections or sublingual tablets/drops) is the only treatment that changes the underlying allergic response. It is typically recommended for people with moderate-to-severe hay fever that is not well controlled with medications. A course takes 3-5 years but can provide long-lasting relief — sometimes permanently. Speak to your GP about a referral to an allergist if you are interested.
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.
