Named ingredient
Is Saccharomyces boulardii halal?
A probiotic yeast, not a bacterium. Still check the capsule and any lactose or magnesium stearate in the blend. Not a ruling on baker’s yeast or nutritional yeast.
A probiotic yeast, not a bacterium. Still check the capsule and any lactose or magnesium stearate in the blend. Not a ruling on baker’s yeast or nutritional yeast.
What the sources say
A probiotic yeast, not a bacterium. Still check the capsule and any lactose or magnesium stearate in the blend. Not a ruling on baker’s yeast or nutritional yeast.
What to ask the manufacturer
A recognised halal mark or a vegan declaration can settle this instead. If you email the brand, send one specific question:
For Saccharomyces boulardii in this product: is the source plant, synthetic, or animal? If animal, which species and slaughter method?
Quick facts
| Name | Saccharomyces boulardii |
|---|---|
| Also on labels as | S. boulardii, boulardii yeast probiotic |
| Additive class | Named ingredient |
| Classification | Source-dependent |
| Last verified | 2026-09-16 |
Common questions
Is Saccharomyces boulardii halal?
Saccharomyces boulardii is classified as Source-dependent. A probiotic yeast, not a bacterium. Still check the capsule and any lactose or magnesium stearate in the blend. Not a ruling on baker’s yeast or nutritional yeast.
Is Saccharomyces boulardii halal or haram?
On the evidence cited on this page, Saccharomyces boulardii is source-dependent. Doubtful until the source is known (mashbooh) Every position is attributed to a named certifier or scholarly body with a link, so you can verify it directly.
What else is Saccharomyces boulardii called on ingredient labels?
It can appear as: S. boulardii, boulardii yeast probiotic.
Why isn't there a single yes/no answer for Saccharomyces boulardii?
Because the ruling depends on information the label does not carry — the source material, the production route, or which scholarly position you follow. This page shows each named position with a link so you can check it yourself.
Where does this page's information come from?
Every position on this page is attributed to a named certifier or scholarly body with a direct link, listed under 'What the sources say'. Muttoo aggregates and cites; it does not issue rulings.
Record ingredient-saccharomyces-boulardii · last verified 2026-09-16 · report an error