The UK's No. 1 bestselling brand of friendly bacteria supplements^

Optibac S. Boulardii supplement box with capsules, a glass of tea, bread on a woven mat, and a banana on a white surface.
Person holding a box of Optibac S. Boulardii digestive supplement with 40 capsules, featuring a yellow design and health claims.
"I would not be without them"
Helen Smith
"Really recommend this product"
Julie. Davis
"I’m so glad I found this product. 100% recommend"
Becky Cleary
"Optibac S. Boulardii suits me very well"
Mrs Judy Morris
Optibac S. Boulardii probiotic box and jar on a table with two capsules and a glass of water, set against a blurred natural background.

Join the Optibac family

Sign up to receive special offers, wellbeing tips, gut health insights and personalised updates.