McDonald's Japan offers English-language menus and allergen information on its official app, though some details remain available only in Japanese. The company provides English-language ordering through its mobile application, making it easier for international visitors to navigate the menu.

However, certain critical information is currently only accessible in Japanese on the McDonald's Japan website. This includes detailed allergen information covering 8 mandatory ingredients and 20 additional items recommended by Japanese Food Labeling Standards, as well as complete nutrition facts and product availability details.

While several restaurants maintain English menus upon request, the language barrier for comprehensive product information may pose challenges for non-Japanese speakers. The company continues to expand its English-language offerings, but customers seeking complete allergen and nutrition data must navigate Japanese-language resources or rely on staff assistance at individual locations.