Baby Allergen Introduction Schedule: The 9 Common Allergens

Updated October 13, 2026

Starting solids usually happens around 6 months, when your baby is developmentally ready. Discuss timing with your clinician, especially for severe eczema or an existing allergy. This guide helps you organize common allergenic foods without treating a calendar as a medical feeding plan. Read the American Academy of Pediatrics’ guidance.

Common allergenic foods

AllergenEasy first forms for babies
EggWell-cooked scrambled egg; egg folded into oatmeal or a small pancake
Cow's milk (dairy)Plain whole-milk yogurt or cheese (cow's milk as a drink still waits until 12 months)
PeanutThinned smooth peanut butter; peanut powder in puree — see our peanut guide
Tree nutsThinned almond/cashew butter or finely ground nuts in puree, one nut type at a time
SoyMashed tofu; plain soy yogurt
WheatIron-fortified wheat cereal; small pieces of soft bread or pasta
FishFlaked, well-cooked mild fish (salmon, cod) with bones removed
ShellfishFinely chopped, well-cooked shrimp or other shellfish mixed into food
SesameTahini thinned into puree or spread very thinly; ground sesame on soft foods

Never serve whole nuts, whole peanuts, or thick spoonfuls of nut butter — all are choking hazards for babies and toddlers.

How to sequence introductions

  • One new allergen at a time. Offer it earlier in the day and watch for about two hours before any other new food, so you can tell what caused a reaction if one happens. Know the signs before you start.
  • Keep timing flexible. The Canadian Paediatric Society notes that a fixed wait of several days between new foods is not supported by evidence. Follow any individual plan from your clinician.
  • Choose an order with your clinician. There is no single required sequence for every baby. Avoid delaying peanut or egg solely to complete a checklist of other foods.
  • Plan repeat servings. Keep tolerated allergens in the diet regularly. See our frequency guide for the recommendations and their limits.

A flexible introduction log

Choose a food, note the preparation, and record what was actually eaten. Keep upcoming plans separate from completed feeds. After introduction, add familiar foods back into meals alongside new ones.

A log entry might read: “Tuesday breakfast — well-cooked egg — amount offered and any observations.” A checkmark records a meal; it cannot establish tolerance or predict future reactions.

Print a free baby food log to record completed meals and keep upcoming plans in a separate table.

Use our tracking guide to organize notes, then browse recipes for already-tolerated allergens.

Source: Canadian Paediatric Society: dietary exposures and allergy prevention.

Track all nine with First Baby Bites

A roster of every allergen, days since the last bite, and reminders when one is due to come back into rotation.

Download on the App Store
Medical disclaimer: This article and the First Baby Bites app are for tracking and informational purposes only and do not constitute medical advice. Always consult your pediatrician or healthcare provider before starting solids or introducing allergens — especially if your baby has severe eczema, an existing food allergy, or a family history of food allergies.