The best probiotic supplement for IBS is ideally one that contains evidence-backed strains like Lactobacillus plantarum, Bifidobacterium infantis, or Lactobacillus acidophilus.

Probiotics have been shown to improve overall stool frequency, gut transit time, and stool consistency [38]. Bacillus coagulans strain LBSC (DSM17654) has been shown to be efficacious in alleviating IBS symptoms such as bloating, abdominal pain, constipation, diarrhea, nausea, vomiting, and stomach rumbling.

Align Digestive Support contains Bifidobacterium 35624™, a unique, pure-strain probiotic. With continued daily use, it provides ongoing relief of IBS symptoms such as abdominal discomfort, gas, and bloating and helps support your gastrointestinal health.

When first using probiotics, some people experience gas, bloating, or diarrhea. Changes in the gut microbiota can result in bacteria producing more gas than usual, which can lead to bloating. However, these side effects usually clear up within a few days or weeks of taking the probiotics.