Table 1. Commercial products analyzed in this study.

Product code	Commercial name	Presentation	Company
D1	“Levadura de cerveza y germen de trigo”(a)	Pills	ALTANA PHARMA, S.A.
D2	Levivel	Pills	NOVA DIET, S.A.
D3	“Levadura de cerveza”(b) (Arkocaps)	Pills	ARKOPHARMA
D4	“Levadura”(c) A+E	Pills	ALTANA PHARMA, S.A.
D5	“Ultra-Levura” (S. cerevisiae var. boulardii)	Pills	UPSAMEDICA, S.L.
D6	“Levadura de cerveza”(b)	Liquid	INSTITUTO FERRÁN
D7	Levadiet	Pills	DIETISA
D8	“Levadura de cerveza”(b)	Flakes	TERRA VERDA
D9	“Levadura de cerveza”(b)	Pills	TERRA VERDA
D10	Bioland beer	Liquid	BRAUEREI SCHLESWIG
D11	Panaktiv	Liquid	Dr. H. Metz
D12	“Levadura y germen”(d)	Pills	SOTYA, S.A.
D13	Strath	Pills	DIETISA
D14	Phytodepur	Pills	Dietéticos INTERSA, S.A.
D15	“Levadura copos”(e) Bioreal	Flakes	RAPUNZEL
D16	“Levadura viva + selenio”(f)	Pills	NATURLIFE, S.L.
D17	Depurator	Liquid	INTERSA, S.A.
D18	Levatrig	Pills	BIOSERUM Laboratorios S.L.
D19	“Levadura de cerveza”(b)	Pills	Distribuciones FELIU
D20	Phytonorm	Pills	INTERSA, S.A.
D21	“Levadura de cerveza”(b)	Flakes	Int-Salim (SALUD E IMAGINACIÓN, S.L.)
D22	Levadiet-C	Flakes	DIETISA
D23	“Cerveza biológica”(g) PILS	Liquid	RAPUNZEL

^(a)Brewer’s yeast and wheat germ;

^(b)Brewer’s yeast;

^(c)Yeast;

^(d)Yeast and germ;

^(e)Yeast flakes;

^(f)Yeast alive;

^(g)Biological beer.