Bacillus subtilis

spore-forming probiotic

Mechanism

Bacillus subtilis forms resistant spores and is thereby gastric-acid, temperature and storage stable, so that viable germs can reach the large intestine. A stabilization of the gut flora and support of fiber digestion is discussed, for example during ration changes. The effect is strongly strain-specific — results of one strain cannot be transferred to others. Individual B. subtilis strains are assessed and authorized on the EU side as zootechnical additives (gut flora stabilizers), predominantly however for other livestock species; robust equine efficacy data are limited.

Cautions

· Effect strongly strain-specific — only assess demonstrated strains
· Only use EU/EFSA-assessed and authorized feed strains (VO (EG) 1831/2003)

Sources

EFSA Journal 2018;16(1):5220EFSA FEEDAP — Bacillus subtilis DSM 28343, zootechnischer Zusatzstoff (Darmflorastabilisator)

EFSA QPSEFSA — Bacillus subtilis im Qualified-Presumption-of-Safety-Status

PMID:36552396Perricone et al. 2022 (Animals) — Review Probiotika/Darmgesundheit beim Pferd

Equiterna Score

59/100

solid

Science4.5/10

Practical experience6/10

Safety7.8/10

Overall score scale

high overall75–100solid55–74limited0–54

How the Equiterna Score is built

The Equiterna Score combines three dimensions into a value of 0-100: science (40%), practical experience (30%) and safety (30%). It is transparently derived from evidence level, attributed sources (PubMed/journals), legal classification and cautions. The FEI doping status is shown separately as a competition-law note and does not enter the score. Commissions and vendor relationships have no influence on the score. In addition, the editorial safety rating caps the result: it limits the safety dimension and the overall tier (orange: at most solid). For entries rated red, no score is calculated at all. The rating never raises anything — a green rating does not lift a calculated value.

An editorial assessment of the evidence and safety situation — not a healing claim and not an individual recommendation. It does not replace veterinary advice.

Dosageproduct-specific (CFU/day according to the authorization of the respective strain)

AMG statusComplementary feed

FEI statusNot listed

SafetyVery safe

Evidenceemerging

Usage note

This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.

“Nothing forced can ever be beautiful.”

Xenophon · On Horsemanship (c. 365 BC)

Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.