Food allergies can shape every meal, every birthday party, and every trip away from home. For young children with an immediate food allergy — the kind that causes hives, lip swelling, or difficulty breathing — oral immunotherapy (OIT) has emerged as a treatment option worth understanding. It is not right for every child, but for some it can meaningfully change their relationship with food.
Here’s what OIT involves, what it can realistically achieve, and what to consider before taking it on.
What is food oral immunotherapy?
OIT involves a child eating or drinking gradually increasing amounts of the food they are allergic to, under close medical supervision. The goal is to desensitise their immune system — to raise the threshold at which it reacts — so that accidental exposure to small amounts of the allergen is less likely to trigger a reaction.
It is an active, ongoing medical treatment, not a one-off procedure. After the supervised build-up phase, the allergen needs to be consumed every day to maintain the benefit.
OIT is only appropriate for children with a confirmed immediate food allergy, diagnosed by an Immunologist or GP Allergist. Skin prick tests or blood tests alone are not sufficient to confirm suitability — a medically supervised oral food challenge is often needed first.
Is OIT available in Canberra and Adelaide?
Yes. Austral Allergy offers OIT assessment and management for children aged five and under at our clinics in Canberra and Adelaide, under the supervision an Immunologist or GP Allergist
We are looking to extend this age range over the next year as OIT becomes more accepted in Australia
What can OIT actually achieve?
This is an important question — and worth answering honestly.
OIT can desensitise your child to their allergen. Being desensitised means that while they continue taking their daily dose, they are less likely to react to accidental small exposures. It provides a meaningful safety buffer for many young children, particularly at an age when accidental contact is hard to prevent.
OIT is not a cure. It does not induce lasting tolerance — meaning the ability to eat normal serves of the food after a prolonged break from OIT, with no reaction. Some children achieve what is called sustained unresponsiveness (sometimes called remission), where they can eventually eat a full serve after stopping OIT doses. But this is not a guaranteed outcome and cannot be predicted in advance.
It is also worth knowing that some children naturally outgrow their food allergy over time. OIT has not been proven to speed up or cause this process — it is simply something that may happen regardless.
If your child stops taking their daily dose, the protection reduces. The desensitisation effect depends on ongoing consumption.
What are the risks?
OIT is a medical intervention and carries real risks that need to be weighed carefully with your specialist.
Children on OIT tend to experience more allergic reactions overall than those managing their allergy through strict avoidance — because the treatment itself involves regular exposure to the allergen. Severe allergic reactions, including anaphylaxis, can occur. Any child undertaking OIT must have an adrenaline (epinephrine) device available at all times and a written emergency action plan.
Other risks include:
- Eosinophilic oesophagitis (EoE) — an allergic condition of the oesophagus that can be worsened or triggered by OIT in some patients
- Co-factor reactions — exercise, infections, poorly controlled asthma or hay fever, and lack of sleep can all increase reaction risk around dose times in young children
- Ongoing lifestyle impact — doses must be taken consistently, and your child needs to rest and be observed for at least one to two hours afterward; this affects childcare, travel, and family routines
What does the treatment actually involve day-to-day?
OIT requires genuine commitment from the whole family. The build-up phase involves supervised clinic visits where doses are gradually increased. Once a maintenance dose is reached, it needs to be taken every day at home — usually from a food product rather than a commercial medicine.
Doses should be given at a consistent time, followed by a quiet rest period at home. Children should not take their dose just before, on the way to, or at childcare. Physical activity and known co-factors should be avoided around dose times as directed by your specialist.
The treatment can continue for several years, so it is worth thinking practically about how it fits into your family’s routine from the outset.
Is OIT right for your child?
OIT is a highly individual decision. It involves balancing meaningful potential benefits against real risks and the practical demands on your family — bearing in mind that for most children with food allergy, careful avoidance remains the standard of care and serves them well.
A shared decision-making process with your Immunologist or GP Allergist is essential before starting. This includes a full discussion of expected outcomes, potential side effects, lifestyle changes, and the long-term commitment involved.
Questions worth asking your specialist include:
- Is my child a suitable candidate based on confirmed allergy testing?
- What outcome is realistic for my child’s situation?
- What are the specific risks we need to plan for?
- What is the full cost of the program, including appointments and products?
- Who manages side effects, and how do I reach them?
- What happens at the end of the formal OIT period?
A note on information sources
Personal testimonials — however compelling — are not a reliable basis for medical decision-making.
If you are considering OIT for your child, the most important step is a thorough conversation with an Immunologist or GP Allergist who can assess your child’s individual circumstances.
The team at Austral Allergy sees young patients across our Canberra and Adelaide clinics. If you would like to discuss whether OIT is appropriate for your child, we welcome you to arrange an appointment https://canberraallergy.com.au/
Clinics will soon be coming to Melbourne and the Northern Rivers.
https://www.allergy.org.au/images/pc/ASCIA_PC_OIT_Food_Allergy_FAQ_2026.pdf