Gut Health Supplements: A Practical Guide

Probiotics and prebiotics

Probiotics are live microorganisms; prebiotics are fibres such as inulin that feed the bacteria already in your gut. Many products combine both.

In the EU the word 'probiotic' is itself treated as a health claim, and no probiotic health claim has been authorised. Honest brands describe their cultures rather than promising digestive results.

Reading strain information

A good label names the genus, species and ideally the strain (for example Lactobacillus acidophilus followed by a strain code) and states the count at the end of shelf life, not only at manufacture.

Storage matters: follow the label on refrigeration and keep products away from heat and moisture.

Food first

Fibre from vegetables, legumes, oats and whole grains, plus fermented foods such as yoghurt and kefir, are the foundations of a varied diet. A supplement can complement these, not replace them.

When to speak to a professional

Persistent digestive symptoms, unexplained weight loss or changes in bowel habit need a GP, not a supplement. People who are immunocompromised should get medical advice before taking live cultures.