← Ingredient & E-number explorer

Typical source

Microbial fermentation or synthetic

Plain-language explanation

E101, or Riboflavin, is a vitamin essential for energy production and overall health, found naturally in foods like milk, eggs, and leafy greens. It can also be produced synthetically or from plant or microbial sources, which are generally considered halal by major certification bodies. However, if derived from non-halal animal sources or using non-halal fermentation processes, its halal status may be questionable, so checking the source or certification is recommended.