To the Editor,
Sulforaphane [1-isothiocyanato-4-(methylsulfinyl)butane] is a
clinically relevant nutraceutical compound present in cruciferous
vegetables (Brassicaceae). It is used for the prevention and treatment
of chronic diseases and may be involved in ageing.1Along with other natural nutrients, sulforaphane has been suggested to
have a therapeutic value for the treatment of the coronavirus disease
2019 (COVID-19).2 Sulforaphane is an isothiocyanate
stored in its inactive form glucoraphanin.3 The enzyme
myrosinase, found in plant tissue and in the gut microbiome, is involved
in the conversion of glucoraphanin to its active form
sulforaphane.4