OptiBac for those on Antibiotics (10 Caps)


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For people taking antibiotics (e.g. penicillin, tetracycline, doxycycline), or who have recently finished an antibiotic course, the strains of natural bacteria in this supplement are specially selected for their suitability and safety. These two high-quality strains of natural bacteria, Lactobacillus acidophilus Rosell-52 and Lactobacillus rhamnosus Rosell-11 are scientifically proven to reach the gut alive, even during a course of antibiotics.

Antibiotics do not distinguish between friendly and harmful bacteria and are therefore thought to kill off much of the natural bacteria in the gut, this may often lead to side effects.


Filler: potato starch; vegetarian capsule: hydroxypropyl methylcellulose; Live cultures:(Lactobacillus rhamnosus Rosell-11, and Lactobacillus acidophilus Rosell-52); anticaking agent: magnesium stearate; antioxidant: ascorbic acid. Each capsule provides 4 billion live cultures.


Adults and children (1 and over): Take one capsule daily with food, preferably with breakfast*, every day during antibiotic course, and for a few days afterwards or until the pack has been completed. *This product has been specifically researched alongside antibiotics, and can be taken at the same time as antibiotics.


OptiBac Probiotics.


10 capsules.

Storage & Safety

Store in a cool dry place. No refrigeration necessary. Keep out of reach and sight of children. Check bottom of pack for Best Before date. Not suitable for infants under 12 months. Do not exceed recommended daily dosage. Food supplements should not be used as a substitute for a healthy diet and lifestyle. Those with serious medical conditions should consult a doctor before use.

Those on long term antibiotics may wish to consider OptiBac Probiotics For Every Day Extra Strength instead.


UK standard delivery

- Free on orders over £30
- £3.95 standard delivery (Royal Mail and Yodel*) 
- We dispatch standard orders within 48 hours, Monday to Friday.

* Royal Mail and Yodel couriers are auto-allocated. At this time, ability to choose courier is unavailable, but please not we are working on resolving this.

For more information on delivery, including international delivery charges, please read our delivery page.