Safe daily quantities of cinnamon are governed largely by coumarin intake, and the tolerable daily intake established by EFSA is the reference point most formulators work from.
Because Ceylon cinnamon contains only trace coumarin, the practical ceiling on daily consumption is far higher than for Cassia. This guide shows the arithmetic behind that difference.
For Manufacturers
Inclusion rates in finished products should be calculated against the coumarin figure on the batch certificate of analysis rather than a generic species average, particularly for products intended for daily consumption.
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