Allergen Management for Peanut-Containing Food Products: A Manufacturer's Compliance Guide

Peanut is one of the nine major food allergens that must be clearly declared on packaged foods in the US. For manufacturers, that means clear labeling, well-documented cross-contact controls, and real consequences if something goes wrong.

Whether you are adding peanut butter to a protein bar or running a shared facility that also handles peanut-free products, having a solid peanut allergen management plan is not optional. Here is a practical, step-by-step guide to what’s required and how to apply those expectations on the production floor.

Labeling Requirements for Peanut-Containing Products

The Food Allergen Labeling and Consumer Protection Act (FALCPA) requires that all nine major allergens be clearly declared on packaged food labels.

Two Ways to Declare Peanut on a Label

The FDA allergen requirement gives manufacturers two options:

Option 1: In the ingredient list: List peanuts by their common name. If the ingredient is derived from peanut (like peanut flour or peanut oil that is not highly refined), the word "peanut" must appear.

Option 2: In a separate "Contains" statement: Add a "Contains: Peanut" statement immediately after the ingredient list.

Best Practice: If you use a "Contains" statement, it must list all major allergens in the product, not just peanuts. You cannot list some allergens in the "Contains" line and others only in the ingredient list.

What About "May Contain" Statements

Advisory statements like "may contain peanuts" or "produced in a facility that also processes peanuts" are not required by law. The FDA allows them when:

• The manufacturer has followed good manufacturing practices (GMPs)

• Every reasonable step has been taken to prevent cross-contact

• The risk of unavoidable cross-contact still exists

Advisory statements are not a substitute for proper allergen controls. 

Preventing Peanut Cross-Contamination

Cross-contact happens when peanut proteins unintentionally end up in a product that should not contain them. Unlike pathogens, peanut allergens cannot be eliminated by cooking. Prevention is the only option.

Key Controls for Shared Facilities

If your facility produces both peanut-containing and peanut-free food products, these controls are essential:

• Production scheduling: Run peanut-free products first, peanut-containing products after. Clean between runs.

• Equipment cleaning: Validated cleaning procedures that remove peanut protein residue. Visual inspection alone is not sufficient.

• Physical separation: Dedicate specific lines, tools, and utensils to peanut-containing production where possible.

• Airborne dust control: Peanut dust and flour particles can become airborne. Positive air pressure in peanut-free zones helps prevent contamination.

• Storage segregation: Store peanut-containing ingredients separately from non-allergen ingredients. Label storage areas clearly.

• Personnel practices: Staff handling peanut ingredients should change outer garments or use dedicated PPE before entering peanut-free production areas.

Required Documentation

Manufacturers are expected to maintain documented allergen controls as part of their food safety plan.

Hazard analysis:

• Identify where peanut allergens enter your process

• Assess cross-contact risks at each production step

Preventive controls:

• Written cleaning procedures for shared equipment

• Validated methods confirming peanut protein removal

• Production scheduling protocols

Monitoring and verification:

• Cleaning verification records (visual, swab testing, or ELISA)

• Production run logs showing allergen sequencing

• Label review records confirming correct allergen declarations

Corrective actions:

• Documented procedures for when cross-contact is detected

• Product hold and disposition records

• Root cause analysis and corrective steps

Keep Records Accessible

FDA inspectors will ask to see your allergen management documentation during facility inspections. Records should be organized, current, and readily available. 

Supplier Verification

Your allergen controls start before ingredients reach your facility. Verifying that suppliers properly declare allergens in their bulk ingredients prevents problems from entering your supply chain.

What to Ask Suppliers

• Does the ingredient contain peanut or peanut-derived components?

• Is the ingredient produced in a facility that also handles peanuts?

• Can the supplier provide a Certificate of Analysis (COA) confirming allergen status?

• Does the supplier have documented allergen controls in their facility?

For protein powders, oats, and other ingredients commonly produced on shared lines, supplier allergen documentation is especially important.

Training and Employee Awareness

Allergen controls only work if every person on the production floor understands them.

What Training Should Cover

• How to identify peanut-containing ingredients and products

• Proper cleaning procedures between allergen and non-allergen runs

• What to do if a potential cross-contact incident occurs

• How to read and verify allergen labels on incoming ingredients

Training should be documented and refreshed regularly.

Conclusion

Peanut allergen compliance comes down to three things: label it correctly, prevent cross-contact with documented controls, and keep your records in order. The FDA requires all three under FALCPA and FSMA, and inspectors actively check for compliance. Getting it right protects consumers and protects your business from recalls and enforcement actions.

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Frequently Asked Questions

What FDA labeling requirements apply to products containing peanut butter?

FALCPA requires peanuts to be declared either in the ingredient list or in a "Contains" statement. If a "Contains" statement is used, it must list all major allergens present, not just peanut.

How should manufacturers prevent peanut cross-contamination in shared facilities?

Use validated cleaning between production runs, schedule peanut-free products before peanut-containing ones, segregate storage, control airborne dust, and document every step.

What allergen documentation do manufacturers need to maintain?

A written food safety plan with hazard analysis, preventive controls, monitoring records, cleaning verification logs, production sequencing records, and corrective action documentation.

Can manufacturers produce peanut and peanut-free products in the same facility?

Yes, with documented controls. Dedicated lines with validated cleaning procedures, proper scheduling, and verified segregation can satisfy FDA requirements under 21 CFR Part 117.

Are "may contain peanut" advisory statements required by the FDA?

No. Advisory statements are voluntary. The FDA allows them only when manufacturers have already implemented GMPs and taken every reasonable step to prevent cross-contact.

Does cooking or heat treatment eliminate peanut allergens?

No. Peanut proteins are heat-stable and survive cooking, baking, and other thermal processes. Prevention of cross-contact is the only reliable control method.