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

Person with curly hair pouring liquid from a small packet into their mouth against a light blue background.

A free week of Oral Care

When you spend £40
Something new to smile about
From the UK’s most trusted & recommended brand

Shop the rangeShop the rangeTalk to a qualified expertTalk to a qualified expert

Our bestselling friendly bacteria

Containing the most researched strains of friendly bacteria, tailored for every life stage

Shop all friendly bacteria

A woman in a striped dress smiles while leaning on a table with a glass of water and a jar of Optibac supplements for women in the foreground.

10% off science you can feel good about

Sign up and check your inbox for 10% off your first order, plus gut health insights and personalised offers.