What is hay fever and how do you get rid of it?

Allergic rhinitis, commonly known as hay fever, is caused when the nose and/or eyes come in contact with environmental allergens: pollens, air borne moulds, dust mites and animal dander. When your immune system is sensitive to one or more allergens present in the environment, the body experiences a range of visible symptoms.

Despite the name, you don’t have to be exposed to hay nor do you develop fever when experiencing allergic rhinitis.

According to self-reported data from the 2017-2018 Australian Bureau of Statistics National Health Survey (NHS) [a], 19% of Australians had allergic rhinitis in 2017-2018. The survey also identified only 10% children suffering from allergic rhinitis as compared to adults.

Hay Fever

Hay fever is the common term for ‘allergic rhinitis’, and is caused when the nose and/or eyes come in contact with environmental allergens, creating a number of chemicals including histamine1 to be released in the body, resulting in unpleasant symptoms. Hay fever is one of the most common allergic conditions2, and affects 1 in 5 people in Australia3. When your immune system is sensitive to one or more allergens present in the environment, it can cause the eyes, nose, throat and sinuses to become swollen, irritated and inflamed. There are two types of hay fever.

Types of hay fever: seasonal and perennial

Seasonal allergic rhinitis: Symptoms commonly occur in spring, summer and early autumn when pollen count from grass, trees and weeds is high in the air and light breezes or gusts of wind often blow pollen around. Other allergens can include airborne mould spores.

Perennial allergic rhinitis: Symptoms can be experienced all year round. Triggers include animal dander (particularly pet hair), dust mites and moulds. Symptoms have been known to get particularly worse at the beginning of pollen season when there are increased allergens in the air.

Hay fever triggers

Hay fever is caused by an allergic response to indoor or outdoor allergens. Here are the most common hay fever triggers to watch out for:

  • Environmental allergens: pollens from grass, trees and weeds
  • Indoor allergens: animal dander, pet hair, dust mites and mould
  • Irritants: Diesel exhaust, industrial fuel burning, cigarette smoke, odour from chemicals in cleaning products, laundry detergents, and strong fragrances from perfumes and cosmetics

Did you know?

Despite the name, hay fever is not caused by hay and does not result in fever. The term takes its name from a popular idea in the 19th Century that the smell of hay in the summer irritated the body4.

Common hay fever symptoms

Hay fever can affect your day-to-day living and ability to perform routine activities such as going to work, attending school, playing a sport or going for social outings. For some people, symptoms are mild and non-interfering, while for others they may be more severe – and can sometimes even be mistaken for a common cold or flu. It is important to note that allergy symptoms tend to persist until treated correctly. Here are the common symptoms of hay fever:

  • Runny nose
  • Blocked nose
  • Itchy skin and eyes
  • Sneezing
  • Coughing to clear throat
  • Snoring
  • Earache
  • Constant sensation of a head cold
  • Sneezing
  • Coughing to clear throat
  • Snoring

Other symptoms of hay fever

  • Irritability
  • Sleep disorders
  • Constant fatigue
  • Decreased concentration and lack of focus
  • Impaired hand-eye coordination
  • Recurrent headaches
  • Reduced sense of smell
  • Sinus infections in adults
  • Ear infections in children
  • Decreased productivity at school or work
pharmacist-leigh

Hay fever treatment

Hay fever symptoms can be controlled with medications, but certain medications are only suited to adults, and you should discuss the risks and benefits with your pharmacist, if buying hay fever medications for children. It is recommended that you always discuss your symptoms in detail with your pharmacist and share information about any existing medical conditions, so they can find a solution tailored to you.

Dual therapy

Often, pharmacists may suggest more than one product (or ‘dual therapy’) to treat hay fever, as different products are formulated to target different symptoms and can prove most effective when working together.

Many hay fever treatments that come in the same dispensing format (e.g. nasal sprays or eye drops), do not contain the same active ingredients or class of medicine. It is essential to speak to your pharmacist to understand what may suit you. You may need to try a few different products before you find something most suited to relieve your symptoms. Speak to your pharmacist about what dual support may be right for you.

pharmacist-leigh

A variety of treatment options are available over-the-counter and your local TerryWhite Chemmart pharmacist can advise you on the most appropriate treatment option that may work for you.

Find out more

Antihistamine eye drops
provide similar relief to oral antihistamines, blocking histamines in the body and can be quick to reduce symptoms such as itchy or watery eyes.

Decongestants
can reduce nasal congestion and sinus pressure. Oral decongestants are less effective than intranasal decongestants, but won’t cause rebound nasal congestion. It’s important to follow pharmacist advice on dosage when using decongestant nasal sprays, as they may cause rebound nasal congestion if used longer than 3-5 days in a row#, causing the nasal passages to become inflamed, swollen and congested#.

Natural products
such as salt water (saline) nasal sprays or rinses can be a gentle solution to clearing nasal passage congestion and washing out allergens (e.g. dust, pollen). The saline can soothe and moisturise inflamed nasal membranes#, and can be recommended for dual use alongside medicated nasal sprays to enhance absorption and effectiveness of medicated sprays.

Corticosteroid nasal sprays

Corticosteroid nasal sprays reduce swelling in the lining of the nose and are known to be one of the most effective treatments for hay fever. They help provide relief from itching, sneezing, runny and blocked noses, and irritation in eyes. It is important to follow your pharmacist’s advice on taking medications over a period of time.

Antihistamine tablets, syrups or eye drops

Antihistamines treat the symptoms of hay fever by blocking the action of the histamine, which is released by the body in reaction to an allergen. Relief from irritated eyes, overall itchiness and sneezing can be sought with antihistamine tablets. Eyes may appear red and swollen due to itchiness and watering. Eye drops containing antihistamine are known to provide immediate relief.

Natural products

You may find some natural products such as saltwater nasal sprays provide better relief for dry nasal passages or thick nasal mucous. The saline solution clears congestion in the nasal passage and washes out allergens such as dust, pollen and irritants.

Immunotherapy

This is an allergen-specific treatment option that is usually administered over a few years by a trained medical specialist, such as a clinical immunologist. The therapy follows a desensitisation mode of treatment wherein the patient is injected with small doses of allergen extracts; to desensitise the body to allergens gradually over time.

Diagnosing hay fever

Some of the symptoms of the common cold and sinusitis are similar to those of hay fever. If you are experiencing any symptoms of hay fever or are unsure about your symptoms, speak to your doctor or trusted pharmacist at your local TerryWhite Chemmart. It is important to accurately diagnose symptoms for appropriate treatment action and relief.

According to Asthma Australia, more than 2.7 million Australians suffer from Asthma and nearly 80 percent also suffer from hay fever.

During the consultation, you will be asked to share your medical history and details about your lifestyle that may help to point towards the cause of the symptoms. Gaining a better understanding of your work and home environments, as well as the frequency and severity of your symptoms, will help your medical professional prescribe what the most suited treatment may be.

Skin tests

You may also be required to perform a skin test to assist in recommending treatment options. After conducting a physical examination, a skin and blood test may be recommended to see how your body reacts to different allergens.

Products that may help

Allergy Management Kit with Claratyne® 10 tablets and Nasonex® Allergy 140 sprays

Allergy Management Kit with Claratyne 10 tablets and Nasonex Allergy 140 sprays

Allergy Management Kit combines the benefits of Claratyne, an antihistamine tablet for fast symptom relief, and Nasonex Allergy nasal spray, for the ongoing treatment and prevention of hayfever and allergies.

Claratyne provides fast, non-drowsy hayfever and allergy relief from day one, while Nasonex Allergy provides direct anti-inflammatory action that works inside the nasal passages to treat and prevent hayfever symptoms.

• Dual action relief
• Claratyne provides fast acting relief
• Nasonex Allergy provides long lasting treatment & prevention
• 24 hour, non drowsy relief from hayfever & allergy symptoms

ALWAYS READ THE LABEL, THIS MEDICINE MAY NOT BE RIGHT FOR YOU. READ THE WARNINGS BEFORE PURCHASE. IF SYMPTOMS PERSIST, TALK TO YOUR HEALTH PROFESSIONAL

Product information & Ingredients

Provides effective treatment and prevention of:

  • Hayfever
  • Dust Allergies
  • Pet Allergies
  • Mould Allergies

Provides relief from Hayfever and Allergy Symptoms such as:

  • Nasal Congestion
  • Sneezing
  • Runny Nose
  • Itchy Nose

Brand
Nasonex Allergy and Claratyne

Ingredients
Nasonex Allergy: Mometasone furoate 50mcg/spray
Claratyne: Loratadine 10mg

Use & Dosage

Directions
Guidance for use – Refer to individual product labels for directions for use.

Step 1: Nasonex Allergy and Claratyne can be used together until your symptoms are under control.

Step 2: Once symptoms are controlled, Nasonex Allergy can be continued daily for ongoing relief and prevention of hayfever & allergy symptoms.

Step 3: Even when allergies are under control, new surroundings, weather, and seasonal changes in pollen and grasses can cause breakthrough symptoms to occur. If you experience these flare ups repeat steps one and two or talk to your doctor or pharmacist.

Claratyne: Adults and Children 12 years and older: 1 tablet once daily as necessary

Nasonex Allergy: Adults and Children 12 years and over . Shake well before each use. 2 sprays into each nostril daily. Use every day for best results. Do not exceed maximum daily dose. Once symptoms are controlled, reduce to one spray into each nostril once daily.

Warnings & Storage & Disposals

Product Warnings
Claratyne: Always read the label. Contains Lactose. Follow the directions for use. If symptoms persist, talk to your health professional.
Nasonex Allergy: Always read the label. Follow the directions for use. If symptoms persist, talk to your health professional.

Caution
Nasonex Allergy: Contains benzalkonium chloride 0.02mg/spray as a preservative. Do not use in children under 12 years of age. Do not use for more than 6 months without the advice of your doctor or pharmacist. Do not exceed the maximum stated dose.
Claratyne: Contains Lactose
Consult you doctor or pharmacist if symptoms persist after 5 days.
Do not use in children under 12 years of age.

Storage Instructions
Store below 25°C

Claratyne Hayfever & Allergy Relief for Adults and Children

Claratyne antihistamine tablets provide fast, 24 hour, non-drowsy relief from symptoms caused by over 200 indoor and outdoor allergens in just one daily dose.

Children’s Claratyne is available in syrup format suitable from 12 months old and chewable tablets suitable from 2 years of age. Both the tablets and syrups provide rapid, 24 hour, non-drowsy effective relief from hayfever and allergy symptoms in one daily dose.

Key Benefits
• Relief from sneezing, watery/itchy eyes, runny nose and itchy rash (hives)
• Non-drowsy
• Rapid 24 hour relief1
• All year round hayfever & allergy relief

Claratyne 10mg 60 tablets Rapid; Claratyne Children’s 1-12 years 120 ml Grape Flavour; Claratyne Children’s 10 tablets Bubble Gum Flavour

Always read the label. Follow the directions for use. If symptoms persist, talk to your health professional. *When monotherapy does not provide sufficient relief from allergic rhinitis. 1. With Claratyne® 2. With Nasonex® Allergy

Product information & Ingredients
Claratyne Children’s Hayfever & Allergy Relief Antihistamine Grape Flavoured Syrup 120ml

Claratyne Children’s Grape Flavoured Syrup provides rapid 24 hour relief from symptoms of hayfever, year round allergies and chronic urticaria (hives) without causing drowsiness.
– Great tasting grape flavour
– Non-drowsy relief
– Use it all year around
– Does not contain sugar, gluten, lactose or colours
– Suitable for children 1 year and over

Just one dose of Children’s Claratyne a day provides rapid 24 hour relief from:- Sneezing- Runny Nose- Watery, Itchy Eyes- Itchy Rash (hives)

Brand Claratyne

Ingredients
Each 5mL of syrup contains Loratadine 5mg

Claratyne Children’s Hayfever & Allergy Relief Antihistamine Bubblegum Flavoured Chewable Tablets 10 pack

Claratyne Children’s chewable antihistamine tablets provide rapid 24 hour, non-drowsy relief from Hayfever, year round allergies and chronic urticaria (hives)
– Great tasting Bubblegum flavour
– Child friendly chewable tablets
– Non-drowsy relief
– Use it all year around.
– Suitable for children 2+ years

Just one dose of Children’s Claratyne a day provides rapid 24 hour relief from:
– Sneezing
– Runny Nose
– Watery, Itchy Eyes
– Itchy Rash (hives)

Brand Claratyne

Ingredients: Loratadine 5mg

Claratyne Hayfever & Allergy Relief Antihistamine Tablets 60 pack

If you suffer from Hayfever and allergies, you know that it can have an impact on your day to day living. Choose Claratyne for a rapid, non-drowsy relief that lasts for 24 hours.

Just one dose a day provides a rapid 24 hour relief from:
– Sneezing
– Watery, Itchy Eyes
– Runny Nose
– Itchy Rash

Hayfever allergy occurs when a person’s immune system reacts to substances in the environment that are harmless for most people. These substances are known as allergens and can be found in dust mite, pets and pollen. Upon exposure to an allergen, histamine is released and people with Hayfever allergies can experience uncomfortable symptoms such as sneezing, runny nose or itchy and watery eyes.

Claratyne is an antihistamine and works by blocking the effects of histamines and helps relieve symptoms caused by hayfever allergies.

Claratyne is non-drowsy and provides rapid 24 hour relief. Claratyne is also suitable for year around allergies.

Brand Claratyne

Ingredients: Loratadine 10mg

Use & Dosage
Claratyne Children’s Hayfever & Allergy Relief Antihistamine Grape Flavoured Syrup 120ml

Directions
Children 1-2 years: 2.5mL once daily as necessary. Children 2-12 years: Up to 30kg – 5mL once daily as necessary. Over 30kg – 10mL once daily as necessary. For oral use only. Use suitable measuring device to measure the dose accurately

Claratyne Children’s Hayfever & Allergy Relief Antihistamine Bubblegum Flavoured Chewable Tablets 10 pack

Directions

Children 2-12 years: Up to 30kg – 1 tablet once daily as necessary. Over 30kg – 2 tablets once daily as necessary. Adults & Children over 12 years: 2 tablets once daily as necessary

Claratyne Hayfever & Allergy Relief Antihistamine Tablets 60 pack

Directions: Adults and children 12 years and over: 1 tablet, once daily as necessary.

Warnings & Storage & Disposals
Claratyne Children’s Hayfever & Allergy Relief Antihistamine Grape Flavoured Syrup 120ml

Product Warnings
Always read the label. Contains benzoates. Follow the directions for use. If symptoms persist, talk to your health professional.

Caution
Do not use this product:
• For children under 1 year of age
• If ring is separated from the cap.
Consult your doctor or pharmacist before use:
• For children under 2 years of age
• If you are pregnant or breastfeeding
• If you have liver disease
Caution
• Consult your doctor or pharmacist if symptoms persist. for oral use only. contains sorbitol and maltitol (5.9g/10mL), sodium benzoate (preservative). product containing sorbitol and maltitol may have a laxative effect or cause diarrhoea.

Storage Instructions
Store below 25°C.

Claratyne Children’s Hayfever & Allergy Relief Antihistamine Bubblegum Flavoured Chewable Tablets 10 pack

Product Warnings: Always read the label. Contains benzoates. Follow the directions for use. If symptoms persist, talk to your health professional.

Caution: Do not use this product if foil seal is broken, if the child can not chew the tablet. Consult your doctor before use if you are pregnant or breastfeeding, if you have liver disease. Caution: Consult your doctor or pharmacist if symptoms persist. Not suitable for children under 2 years of age. contains aspartame as a sweetener. phenylketonurics: contains phenylalanine.

Storage Instructions: Store below 25°C.

Claratyne Hayfever & Allergy Relief Antihistamine Tablets 60 pack

Product Warnings: Always read the label. Contains Lactose. Follow the directions for use. If symptoms persist, talk to your health professional.

Caution

Do not use this product
• For children under 12 years of age
• If foil seal is broken
Consult your doctor or pharmacist before use
• If you are pregnant or breastfeeding
• If you have liver disease. Contains lactose.

Storage Instructions: Store below 30°C.

Rhinocort® Nasal Spray  64mcg
Available in selected stores.

Rhinocort® Extra Strength Nasal Spray 

Nothing’s more effective for allergy relief without a script than NEW Rhinocort Extra Strength Nasal Spray1
*compared to over the counter medicines and equivalent to intranasal corticosteroid sprays

Rhinocort nasal spray prevents and provides powerful long lasting relief from frustrating hayfever and allergy symptoms which include sneezing, blocked nose, runny nose, itchy nose, itchy & watery eyes.

Rhinocort protects from allergies associated with:

  • Pollen
  • Grass
  • Dust
  • Pets
  • Mould

It provides powerful, long-lasting relief of symptoms for 24 hours, yet is gentle on the nose with convenient once daily dosing.

Rhinocort was made to be tolerable with a formula that is:

  • Non-drowsy
  • Scent-free
  • No bitter taste 2-4
  • Low post-nasal drip
  • Convenient, once daily dosing (24 hour relief)

ALWAYS READ THE LABEL, THIS MEDICINE MAY NOT BE RIGHT FOR YOU. READ THE WARNINGS BEFORE PURCHASE. IF SYMPTOMS PERSIST, TALK TO YOUR HEALTH PROFESSIONAL

Product information & Ingredients

Brand Rhinocort

Non-Drowsy Aqueous Nasal Spray

Ingredients
ACTIVE INGREDIENTS: Budesonide 64 micrograms.
CONTAINS: Potassium Sorbate 1.2mg/mL as a preservative.

Use & Dosage

1. Gently blow nose to clear nostrils. Shake the bottle well and remove protective cap. If first time use or after a period of non-use, prime the spray by spraying several pumps into the air.

2. Tilt head slightly forward and gently insert nozzle tip into nostril. Aim nozzle away from middle of nose (septum) and direct into nasal passage, towards the back of nose.

3. To spray, press down firmly on the nozzle whilst gently breathing in through the nose. Repeat to required dose. Avoid sniffing hard during or after spraying.

4. Repeat steps 3-4 in the other nostril. Remember to wipe the tip clean with a tissue before recapping and store upright.

 

Use & dosage
For best results, Rhinocort should be used regularly to keep hayfever and allergy symptoms under control. Using Rhinocort 1-2 days prior to exposure to pollen and allergens can help prevent symptoms from occurring. Use only if carton seal is unbroken.

Directions
Shake well before use. Age: 12 years and over use for: Seasonal allergic rhinitis (Hayfever). Age: 18 years and over use for: Perennial allergic rhinitis (Allergy) How often: Apply two sprays into each nostril once daily. Read enclosed leaflet for further details. Do not use more than 256μg (4 sprays) each day.

Warnings & Storage & Disposals

Product Warnings
Do not use
– for children under 12 years of age
– for children under 18 years of age for perennial allergic rhinitis.
– if you are hypersensitive to any of the ingredients
– continuously for more than 6 months without the advice of your doctor

Ask your doctor before use if:
– you are pregnant, plan to become pregnant or breastfeeding.

Caution
o If symptoms persist, worsen, or new symptoms appear see your doctor.
o For nasal use only.
o In the event of an overdose seek medical attention immediately.
o Read enclosed leaflet before using Rhinocort Hayfever and Allergy Extra Strength for a full description of warnings and precautions. Keep out of reach of children.

Storage Instructions
Store below 30°C. Do not freeze

1Research conducted and funded by Rhinocort. Efficacy of Budesonide compared to intranasal corticosteroids and antihistamines in allergic rhinitis, November 2019. Available at Rhinocort.com.au
2 Shah SR et al. Two multicenter, randomized, single-blind, single-dose, crossover studies of specific sensory attributes of budesonide aqueous nasal spray and fluticasone propionate nasal spray. Clin Ther. 2003 Aug; 25(8): 2198–214.
3 Khanna P, Shah A. Assessment of sensory perceptions and patient preference for intranasal corticosteroid sprays in allergic rhinitis. Am J Rhinol 2005; 19(3): 316–321.
4 Meltzer EO. Formulation considerations of intranasal corticosteroids for the treatment of allergic rhinitis. Ann Allergy Asthma Immunol. 2007 Jan; 98(1): 12–21.

Allergy Duo Kit (Telfast 180mg 30’s + Telnasal Allergy Spray 140 dose)

Allergy Duo Kit includes Telfast 180mg 30 tablets for fast* non-drowsy relief of the symptoms of hayfever allergies and Telnasal Allergy Spray 140 dose for prevention and treatment of hayfever allergies. *fast indicates product works in 1 hour.

Telfast contains an active ingredient called fexofenadine hydrochloride. It is in the group of medicines called antihistamines. Antihistamines help reduce allergic symptoms by blocking the effects of a substance called histamine, which your body produces when exposed to certain allergens. Telfast provides non-drowsy hayfever allergy relief.

Telfast 180mg 30 tablets + Telnasal Allergy Spray 140 dose

ALWAYS READ THE LABEL, THIS MEDICINE MAY NOT BE RIGHT FOR YOU. READ THE WARNINGS BEFORE PURCHASE. IF SYMPTOMS PERSIST, TALK TO YOUR HEALTH PROFESSIONAL

Product information & Ingredients

Use Telfast 180mg for the relief of the symptoms of hayfever allergies:
– Sneezing
– Runny & Itchy Nose
– Itchy & Watery Eyes
– Itchy Throat

Telnasal Allergy Spray contains an active ingredient called mometasone furoate in a nasal spray format. It is used to treat the symptoms of hayfever allergies and can also be used for the prevention of hayfever symptoms for up to 6 months.

Telnasal Allergy Spray can be used for treating nasal allergy symptoms including:
– Blocked nose
– Runny nose
– Sneezing
– Itchy nose

Brand Telfast + Telnasal

Size: Telfast 180mg 30 Tablets + Telnasal Allergy Spray 140 Dose

Ingredients
Telfast 180mg: fexofenadine hydrochloride 180mg. Telnasal Allergy Spray: mometasone furoate (as monohydrate) 50 micrograms per spray.

Use & Dosage

Directions
Telfast 180mg: Adults and Children from 12 years: 1 tablet daily as required. Telnasal Allergy Spray: Adults & Children 12 years of age and over: The usual recommended dose is two sprays in each nostril once daily. It may take 1-2 days for full effect. Once symptoms are controlled, reducing the dose to one spray in each nostril may be effective for maintenance.

Warnings & Storage & Disposal

Product Warnings
Always read the label. Follow the directions for use. If symptoms persist, talk to your health professional.
AUST L NUMBER
L 336627

Storage Instructions
Telfast 180mg: Store below 30°C. Telnasal Allergy Spray: Store below 25°C.

Managing hay fever and asthma

Asthma is an inflammatory condition of the lungs characterised by people experiencing shortness of breath, tightness in the chest, excessive wheezing and coughing. If you suffer from asthma, it is advisable to consult your doctor at the start of hay fever season to discuss any change in medication management that may be required if you are taking an inhaler on a regular basis.

Sometimes an asthma attack can be triggered when a person is exposed to an allergen. Better control of hay fever can help better control asthma. Untreated hay fever may also expose a person to the risks of developing asthma and eczema.

Type of skin tests

Prick test – During this test your doctor will prick your arm with a tiny drop of a common allergen. If the skin gets red, itchy or swollen around the test site, it is highly possible your immune system is sensitive to the allergen. It is one of the most common types of skin tests and the results are known within 20 minutes.

Intradermal test – In this test, a small amount of a common allergen is injected in the skin using a needle. It takes about 20 minutes for any reaction indicating sensitivity to allergens to appear at the injected site on the skin.

Spring has sprung! Tips to prevent and treat hay fever

Spring is a wonderful time of the year. Warm weather, beautiful blossoming nature and heaps of outdoor activities to keep you in good spirits.

How we can help

At TerryWhite Chemmart, we are here to support you through allergy season. Speak to one of our friendly pharmacists today about any hay fever or allergy symptoms you are experiencing, and find out what dual support therapy may be suitable to treat your symptoms.

References

[a] ABS (Australian Bureau of Statistics) 2018. National Health Survey: First Results, 2017–18. ABS cat. no. 4364.0.55.001. Canberra: ABS.
1Research conducted and funded by Rhinocort. Efficacy of Budesonide compared to intranasal corticosteroids and antihistamines in allergic rhinitis, November 2019. Available at Rhinocort.com.au
2 Shah SR et al. Two multicenter, randomized, single-blind, single-dose, crossover studies of specific sensory attributes of budesonide aqueous nasal spray and fluticasone propionate nasal spray. Clin Ther. 2003 Aug; 25(8): 2198–214.
3 Khanna P, Shah A. Assessment of sensory perceptions and patient preference for intranasal corticosteroid sprays in allergic rhinitis. Am J Rhinol 2005; 19(3): 316–321.
4 Meltzer EO. Formulation considerations of intranasal corticosteroids for the treatment of allergic rhinitis. Ann Allergy Asthma Immunol. 2007 Jan; 98(1): 12–21.
#: https://www.australianallergycentre.com.au/nasal-sprays-and-management-of-allergic-and-non-allergic-rhinitis/