One of the strongest probiotic products in the UK, Lamberts Acidophilus Extra 10 are useful for restoring balance to your gut in the instance of harmful bacteria overwhelming the good bacteria. This can be caused by taking oral antibiotics, stress, illness, Irritable Bowel Syndrome (IBS) Candida Overgrowth (thrush) and travelling overseas. This product is best contained in cool, dry conditions in order to preserve and prolong the lifespan of the Acidophilus bacteria. One pack of 30 is equivalent to a 30 day supply as the recommended daily intake is one capsule for optimal effectiveness. Also available in a 60 pack.