Allergen powders, puffs and mix-ins: do babies need them?

What these products are

Since the guidelines changed to recommend early peanut and egg, a lot of products have appeared to help: powders you stir into purée, puffs and crackers, and “starter packs” with several allergens in one. They promise to make introducing allergens easier.

None of them is required. This guide explains what the guidelines actually say, so you can decide whether a product helps your family or not. For the basics of introducing each allergen, start with how to introduce allergens.

What the guidelines say

Everyday foods work. The US guidelines describe introducing allergens with ordinary foods in baby-safe forms:

• The AAP suggests stirring a little smooth peanut butter into infant cereal, puréed fruit or yogurt, or dissolving it in breast milk or formula, and offering about ⅓ of a well-cooked egg as a regular portion once it’s tolerated.
• The 2021 US and Canadian allergy consensus says all infants should be given allergenic foods, including peanut butter, cooked egg, dairy and wheat products, in the first year.
• ASCIA, the Australian allergy society, says to introduce the common allergens by 12 months, starting with foods your family already eats.
• The NHS says these foods can be introduced from around 6 months as part of your baby’s diet, just like any other foods.

Single-food powders and puffs are fine as one option. In the home-feeding instructions doctors give to babies who were allergy tested and cleared, the NIAID peanut guidelines list four ways to give a full serving of about 2 g of peanut protein: thinned smooth peanut butter, peanut butter stirred into a fruit or vegetable purée, peanut flour or peanut butter powder stirred into purée, or peanut puffs. They name the puff snack used in the LEAP study and say other puffs with a similar amount of peanut protein can be used. For babies under 7 months, soften the puffs with water first.

Products aren’t better than food. The 2019 AAP clinical report found no evidence that delaying allergenic foods such as peanut, egg and fish beyond 4 to 6 months prevents allergy, and evidence that early peanut may prevent peanut allergy. None of the guidelines we checked (NIAID, the AAP, the 2021 consensus and ASCIA) says a commercial product works better than the food itself.

The catch with many products

Dose. A lab study of 32 early-introduction products found that the amount of allergen varied more than a thousandfold between them. Peanut puffs and some single-food powders contained a lot. Mixed-food blends, puffs, crackers and fruit pouches often had very little, and some had none that the test could detect (Filep and Chapman). ASCIA says the protein in starter packs is variable and can be lower than in the actual food, and that most packs contain less allergen than the amounts used in the prevention studies.

A baby can tolerate the powder and still react to the food. Because the amount can be low, ASCIA warns that some babies tolerate a starter pack powder but then react when they eat the actual food.

Mixed-allergen products for first tastes. ASCIA says products that mix several allergens should not be used to introduce those foods. If your baby reacts, you won’t know which allergen caused it, and they’ll have to avoid all of them while waiting to see a doctor. That delays several foods at once, and breaks in eating allergens may make allergy more likely. Introduce one new allergen at a time (ASCIA, NHS).

Raw egg powder. ASCIA notes that most powdered egg in starter packs is undercooked (such as raw pasteurized egg), and that some babies react to it who may not react to well-cooked egg. In one study in the 2021 consensus, about a third of high-risk babies reacted to their first raw egg powder. Use well-cooked egg, such as hard-boiled and mashed, for the first taste: see egg.

Cost and variety. ASCIA says starter packs can be unnecessary and costly if allergens are already part of family meals, and that relying on them can turn feeding into something medical. Babies benefit from learning real tastes and textures.

If you’d like to use a product

Some families find a product convenient, especially for foods they don’t usually cook. If you do:

• Start with the real food when you can. ASCIA says starter packs, if used, should come after the common allergens have been introduced.
• Choose a single-allergen product for any first taste, never a mix.
• Check the protein per serving on the label. As a guide for a full serving, NIAID says about 2 teaspoons of smooth peanut butter gives about 2 g of peanut protein, and the AAP gives about ⅓ of a well-cooked egg as a regular portion. Start with a small taste first: see peanut introduction.
• Watch the texture. Powders should be stirred well into a smooth purée. Puffs must be the kind that dissolve, softened with water for babies under 7 months (NIAID). Never give whole nuts or spoonfuls of thick nut butter.
• Don’t let it replace the food. Keep moving toward allergens as normal family food, like egg in pancakes, yogurt, and fish.

How much and how often

Whichever form you use, regular servings matter more than the first taste.

• Most babies: at least once a week, in a normal portion for their age (ASCIA, 2021 consensus). The consensus says regular eating over several years matters more than an exact amount, and suggests about 1 to 2 teaspoons of peanut butter or egg at least once a week.
• Babies at high risk of peanut allergy whose doctor has cleared peanut: NIAID recommends about 6 to 7 g of peanut protein a week, spread over three or more feedings.

See keeping allergens in the diet for a sample week, and peanut introduction for peanut in detail.

Talk to your doctor first if…

• your baby has severe eczema: eczema that keeps coming back or needs prescription creams often, even with good moisturizing (NIAID)
• your baby has an egg allergy, or has had an allergic reaction to any food

NIAID recommends that these babies are assessed, often with an allergy test, before peanut is introduced, as early as 4 to 6 months. The AAP says to talk with your pediatrician first about how and when to introduce allergenic foods. Don’t use any product, or the food itself, for a first taste at home until your doctor has told you how. See eczema and starting solids.

Signs of a reaction

Reactions usually start within minutes, but can take up to 2 hours (NHS). Mild signs include hives or a red, itchy rash, puffiness around the eyes, vomiting once or a runny nose. If you see only one of these, stop the food, stay with your baby, and call your pediatrician before trying it again.

Signs of anaphylaxis are trouble breathing, wheezing or a cough that won’t stop, swelling of the tongue or throat, lips or mouth that suddenly swell, a hoarse cry, turning pale or floppy, becoming very sleepy or unresponsive, or signs in more than one part of the body at once. If your baby has an epinephrine (adrenaline) auto-injector, use it right away, then call for an ambulance. Call 911.Call 999.Call your local emergency number (such as 112 in Europe or 000 in Australia). If you don’t have an auto-injector, call straight away. Keep your baby lying down, never standing or walking (on their side if they’re vomiting, head and shoulders a little raised if breathing is hard), and go to hospital even if they seem better. See signs of anaphylaxis.

Where US and UK advice differs

• Who checks with a doctor first. NIAID and the AAP single out babies with severe eczema, egg allergy or a previous food reaction. The NHS asks you to talk to your GP or health visitor first if your baby has any eczema or a diagnosed food allergy, or if there’s a family history of food allergy, eczema, asthma or hay fever.
• Products. NIAID lists peanut puffs and peanut powder alongside peanut butter. The NHS pages we checked don’t mention allergen products: they describe allergens as ordinary foods, such as finely ground nuts or nut butters. ASCIA has the most detailed advice: single-allergen products only after the real food, and no mixed products for first tastes.

See the safe first form of each allergen.