Choose the correct question
Regular exposure applies only to foods already tolerated
Never use a successful first taste as a permanent allergy clearance, and never treat regular allergen inclusion as permission to reintroduce a suspected or diagnosed trigger.
Introducing a new allergen
Choose a suitable form after developmental readiness and check whether severe eczema, egg allergy or a previous reaction needs clinical advice.
Unsure about a reaction?
Stop the suspected food, record what happened and contact a clinician. Breathing difficulty, wheeze or persistent cough, lip, tongue or throat swelling, or a pale, floppy baby requires emergency help.
Food already tolerated
Keep it in the usual diet in a suitable form unless there are concerning symptoms or a different clinician-prescribed allergy plan.
If breathing, circulation or responsiveness is affected, give prescribed adrenaline (epinephrine) first if available, then contact emergency services on your local emergency number. For exact steps in an emergency, use the emergency-response guide, not this decision chart.
Why continued inclusion matters
Research on early peanut introduction supports not only introducing suitable peanut-containing foods early in eligible infants, but continuing to include tolerated foods afterward. The NHS recommends keeping tolerated potential allergens in the usual diet; AAP research reviews also emphasize consistent inclusion. That is general prevention guidance, not a prescription for a child with a confirmed allergy.
How often is 'regular'? A 2026 Australasian ASCIA guideline recommends at least weekly for tolerated common allergens, including egg and peanut. Its frequency advice is explicitly based on expert consensus because the ideal frequency and dose are not established for every food or baby. North American recommendations may use different wording. There is no evidence-based rule that every infant must eat all nine US major allergens two or three times each week.
If your baby has an existing diagnosed food allergy, a possible reaction, severe eczema or a clinician-prescribed allergen plan, your care team's advice takes priority. This page does not give food challenges, immunotherapy, peanut dosing or instructions to continue a suspected trigger.
When continuing exposure is not the right next step
- If a previously tolerated food is followed by a few hives, mild swelling around the eyes or face or a single vomit, with your baby alert and breathing normally, stop that suspected food and get same-day advice from a pediatric clinician or allergist before trying it again.
- If there is difficult or noisy breathing, wheeze or a persistent cough, a hoarse cry, sudden swelling of the lips, mouth, tongue or throat, or a pale, floppy or unresponsive baby, give prescribed epinephrine (adrenaline) first if available, then contact emergency services on your local emergency number, and keep your baby lying flat. Do not substitute antihistamines for emergency treatment.
- If your baby has a diagnosed allergy, severe eczema, known egg allergy, previous peanut reaction or a medically restricted diet, do not use a generic 'keep offering' schedule in place of a specialist plan.
- If your family has removed major food groups, growth or feeding is affected, or you are unsure whether a rash was irritation versus allergy, discuss the history with a clinician before reintroducing the suspected trigger.
What to do next depends on what happened
These are separate decisions. The advice to keep eating a tolerated food does not apply to a suspected trigger or a food your child's allergy clinician has told you to avoid.
| Situation | Safer next step | Important boundary |
|---|---|---|
| Food eaten repeatedly without symptoms | Continue it as a familiar part of the diet using a suitable food form. | The exact optimal amount and frequency for every allergen remain uncertain; follow an individual plan if given. |
| Missed several ordinary meals or a week | Review the normal menu and continue familiar foods when the child is well and ready to eat. | A gap alone does not prove loss of tolerance; do not invent a deadline or mandatory restart dose. |
| A few hives, mild redness or swelling around the eyes or face (not lips, mouth or tongue), or a single vomit, with your baby alert and breathing normally | Stop the suspected food, stay with your baby and watch closely, and get same-day medical advice before offering it again. | Do not treat the food as 'cleared' because it was tolerated before or use a home challenge. |
| Difficult or noisy breathing, wheeze or a persistent cough, a hoarse voice or cry, trouble swallowing, sudden swelling of the lips, mouth, tongue or throat, blue, grey or pale skin, a baby who is limp, floppy, unusually drowsy or not responding normally, or hives over much of the body with repeated vomiting | If a prescribed adrenaline (epinephrine) auto-injector is available, give it first, then call your local emergency number. Keep your baby lying flat, not upright (on their side if vomiting). Go to hospital even if symptoms settle. | Do not delay for a food record, home monitoring, antihistamine alone or an app. |
Why familiar foods drop out of a baby's meals
- A parent marks peanut or egg as 'tried' but forgets to use it again as meals change.
- Foods such as fish, sesame or soy are less common in some family menus; they require realistic planning rather than pressure to complete a grid.
- The child starts eating different textures, so a food previously offered as a mash needs a new age-appropriate preparation.
- Family meals, daycare restrictions, travel or illness change what is available. A disruption does not establish an allergy or dictate an emergency reintroduction timetable.
- A possible rash or vomiting episode creates uncertainty. Rather than guessing that a previously tolerated food is safe, record the event and discuss it with a clinician.
A flexible approach to foods already tolerated
Separate tolerated foods from suspected triggers
Keep a simple list of foods your baby has eaten without concerning symptoms. Do not place a food with a possible allergic reaction on the routine 'keep offering' list until your child's clinician has advised about the next exposure. A tracker records history, not medical clearance.
Build around meals you already serve
You might use fully cooked egg in a soft meal, plain pasteurized yogurt as a complementary food, or smooth peanut butter thoroughly thinned and incorporated into an otherwise familiar soft food. These are ingredient ideas, not individual doses or safety-verified serving shapes. Avoid whole nuts, thick sticky nut butter, raw shellfish and other choking or food-safety hazards.
Use a realistic regular rhythm, not a nine-food quota
The NHS recommends regularly including tolerated allergens in the ordinary diet. ASCIA's at-least-weekly suggestion is expert consensus, not an exact allergy-prevention dosage, and research does not establish one universal interval for every food. Adapt to family meals and any clinician plan instead of racing to complete a strict calendar.
Check every recipe and ingredient
A wheat pancake may contain egg and milk; a sesame spread may contain other allergens; a packaged food can change ingredients. If adding a new allergen, follow your applicable introduction guidance rather than assuming a mixed recipe makes all ingredients newly tolerated.
Respond to pauses and new symptoms individually
A missed week does not prove that tolerance has been lost or retained. If your child is unwell and barely eating, prioritize medical and feeding needs; do not force allergen consumption. After a suspected reaction, long avoidance or a specialist plan, ask your child's clinician how to proceed before attempting reintroduction.
