Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
How long to take it
Short courses alongside and just after antibiotics.
Who it's actually for
People on antibiotics, and traveller's diarrhoea prevention.
Safe upper limit
UnverifiedNo formal limit; 250–500 mg twice daily
Should not be used by people who are immunocompromised or have a central venous line — fungaemia has occurred.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Immunosuppressants — Ciclosporin, tacrolimus, azathioprine, biologics, steroids
- Antibiotics — Especially tetracyclines and quinolones
Other supplements:
Run your full list through the interaction check.
Practical notes
- Being a yeast, it survives antibiotics — unlike bacterial probiotics.
- Avoid with a central line or significant immunosuppression.