Nutrition Labeling

Overview

Nutrition labeling is a system for displaying the energy value and nutrient amounts contained in food. It allows consumers to check the nutritional characteristics of a food product when making purchasing decisions.

Under Japan’s food labeling rules, nutrition labeling is generally required for prepackaged processed foods and additives sold to general consumers. Imported foods sold in Japan must also be checked against Japanese nutrition labeling requirements before sale.

For overseas suppliers and importers, nutrition labeling is not simply a translation of the overseas “Nutrition Facts” panel. The display items, units, order, rounding rules and salt equivalent calculation must be reviewed under Japanese rules.

Foods Subject to Nutrition Labeling

Nutrition labeling is generally mandatory for prepackaged processed foods and additives sold to general consumers in Japan.

For fresh foods and business-use foods, nutrition labeling may be voluntary in some cases. However, if energy or nutrient information is voluntarily displayed, it must still follow the applicable food labeling rules.

There are also cases where nutrition labeling may be omitted, such as certain foods sold by small-scale businesses or products that meet specific exemption conditions. In practice, businesses need to check whether the product is for general consumers or business use, whether it is processed food or fresh food, and whether any exemption may apply.

Main Required Items

The basic nutrition labeling items in Japan are:

• Energy
• Protein
• Fat
• Carbohydrate
• Salt equivalent

Depending on the product and the claims made, other nutrients such as sugars, dietary fiber, vitamins or minerals may also be displayed.

The displayed values may be based on analysis, calculation, reference data or other appropriate grounds. For imported foods, the importer should obtain and review nutrition data, product specifications or analysis certificates from the overseas manufacturer.

Important Points for Imported Foods

Even if an overseas label already has nutrition information, it cannot always be used directly as the Japanese nutrition label.

The serving size, nutrient names, units, rounding rules and required display items may differ from Japanese requirements. Overseas labels are often based on serving-size formats, while Japanese labeling may require a different unit basis.

A particularly important point is sodium. If the overseas label shows “Sodium,” the Japanese label generally needs to display the value as salt equivalent. The importer must confirm the correct conversion and ensure that the displayed value is appropriate.

Even where the overseas manufacturer provides a nutrition table, the Japanese label should be checked for food unit, display order, nutrient names, units and rounding rules.

Nutrition Claims

Nutrition claims require additional care. Expressions such as “low calorie,” “reduced sugar,” “low salt,” “high protein,” “contains calcium,” or “rich in dietary fiber” may be subject to specific criteria under the Food Labeling Standards.

Nutrition claims are not only a matter of wording. The product must meet the relevant threshold or condition for the type of claim used.

Nutrition claims may include claims that a nutrient is high, low, not contained, reduced, increased or added. The applicable criteria differ depending on the nutrient and the expression.

Businesses should therefore check the relevant standards before using nutrition-related claims on labels, product pages, advertisements or sales materials.

Relationship With Advertising and Sales Materials

Nutrition labeling is closely connected with advertising and sales communication.

Even if the package label contains only ordinary nutrition information, an online product page, advertisement, social media post or in-store display may create additional legal risk if it suggests health improvement, disease prevention or exaggerated nutritional benefit.

For example, expressions such as “ideal for maintaining health,” “improves your condition just by drinking every day,” or “supports disease prevention” may raise issues under advertising rules, the Health Promotion Act or the PMD Act, depending on the wording and overall impression.

For imported foods, overseas marketing materials should not be translated directly without local review for Japan. Labeling and advertising should be checked separately, but consistency between them is also important.

Imported Food Documentation

For imported foods, nutrition labeling should be checked before sale preparation, not after customs clearance.

Importers should obtain the necessary information from the overseas manufacturer at an early stage. Useful documents may include:

• Nutrition data sheet
• Product specification
• Analysis certificate
• Ingredient composition information
• Manufacturing standard or formula information
• Overseas label copy
• Information on serving size and calculation basis

These documents are needed to prepare a Japanese label and to explain the basis for the displayed values if questioned by a regulator, customer or trading partner.

Salt Equivalent and Sodium Conversion

Salt equivalent is one of the most important practical issues for imported foods.

Many overseas labels display sodium instead of salt equivalent. In Japan, the required nutrition labeling item is salt equivalent, so the sodium value must be converted appropriately.

This is a frequent source of error in imported food labeling. Importers should not simply copy the overseas sodium value into the Japanese salt equivalent field.

Where the overseas data is unclear, the importer should confirm the basis with the manufacturer or obtain additional documentation before finalizing the Japanese label.

Practical Points for Imported Food Businesses

When checking nutrition labeling, businesses should confirm whether the product is subject to mandatory labeling, whether the required items are complete, whether the display unit is correct, and whether supporting data exists for the displayed values.

For imported foods, the importer should organize the required information before creating the Japanese label. Nutrition labeling is a sales-preparation issue, not merely a customs-clearance issue.

The label, e-commerce page, advertisement, social media post and in-store display should also be checked together to ensure that nutrition and health-related expressions are consistent and not exaggerated.

Checklist Before Sale in Japan

Before selling an imported food product in Japan, check the following points:

• Is the product a general consumer processed food, additive, fresh food or business-use food?
• Is nutrition labeling mandatory, voluntary or possibly exempt?
• Are energy, protein, fat, carbohydrate and salt equivalent properly displayed?
• Are the display unit, order, nutrient names, units and rounding rules suitable for Japan?
• If the overseas label shows sodium, has it been properly converted into salt equivalent?
• If a nutrition claim is used, does the product meet the relevant standard?
• Are there supporting documents such as a nutrition data sheet, specification or analysis certificate?
• Are the label, EC page, advertisement, social media post and in-store POP consistent?
• Do health or nutrition-related claims avoid excessive or drug-like expressions?

Practical Points for Overseas Suppliers

Overseas suppliers exporting food products to Japan should understand that Japanese importers may request nutrition data in a different format from the overseas label.

The importer may need sodium values, salt equivalent calculation, product specifications, analysis results and ingredient details to prepare the Japanese label.

A label that is acceptable in the exporting country may still require adjustment for Japan. Suppliers should cooperate before the product label, online sales page, advertisement or social media material is finalized.

Common Mistakes

Common mistakes include copying the overseas Nutrition Facts panel without adjustment, using serving-size values that do not match the Japanese display unit, failing to convert sodium into salt equivalent, and using nutrition claims without checking the required criteria.

Another common mistake is checking only the product label while ignoring online sales pages, advertisements, social media content, campaign pages and in-store displays.

For imported foods, nutrition labeling should be treated as part of the overall Japan-market compliance review.

Key Takeaway

Nutrition labeling is a basic but important requirement for food products sold in Japan.

For imported foods, overseas nutrition information cannot always be used as-is. Display items, units, rounding rules, sodium-to-salt equivalent conversion and nutrition claims must be checked under Japanese rules.

Importers and overseas suppliers should prepare supporting documents early and confirm that labels, product pages, advertisements and social media posts are consistent before selling the product in Japan.