Questions & answers

A live microorganism which, taken in an adequate amount, is intended to confer a health benefit. The evidence attaches to a specific strain rather than to the category as a whole.

A probiotic is a live organism. A prebiotic is a food component — typically a fibre — that the organisms already in your gut can use.

Because effects shown for one strain cannot be assumed for a related one. The strain designation on the pack is what connects a product to its research.

A yeast probiotic is commonly taken during a course, since antibacterial agents do not act on yeasts. Check the timing with your pharmacist.

Follow the pack and the leaflet, which differ by format and by market. If you are unsure, ask your pharmacist rather than estimating.

No. Use water or a cool drink — heat is not appropriate for a live culture.

Take the next one as scheduled. Do not double up.

Store below 30 °C in a cool, dry place, following the instructions on the pack. Keep out of the reach and sight of children.

Yes. Anyone immunocompromised, critically ill, or with a central venous catheter should not take a probiotic without medical supervision. Check the leaflet and ask your doctor.

Ask your doctor or midwife first — guidance varies by market and by individual circumstances.

Through pharmacies and selected online partners. See the Where to buy page for the list in your country.

Registration and availability differ by market. Your pharmacist can advise on the closest locally approved equivalent.