Antibiotic treatment can change the composition of gut microorganisms. However, there is no single ideal gut flora that a fixed course of treatment can restore in everyone. Symptoms and individual risks should guide the next steps.
Adjust your diet gradually
Unless specific medical advice applies, well-tolerated vegetable dishes, wholegrain foods and pulses can form part of a varied diet. Introduce fibre-rich foods gradually in keeping with your usual diet. Large amounts of new fibre powders at once are unnecessary and may worsen symptoms. Make sure you drink enough.
Fermented does not automatically mean probiotic
Fermented foods can add variety to your diet. However, they do not always contain live microorganisms, for example after heating. Even live cultures do not automatically have a proven benefit against antibiotic-associated diarrhoea. The strain studied, the preparation and the particular situation must be appropriate.
Assess probiotics for the specific situation
There is evidence that certain probiotics may reduce antibiotic-associated diarrhoea. This is different from proving that any mixture fully restores the previous microbiome. In people with severe illness or a weakened immune system, live microorganisms can pose additional risks. Discuss the product and medication regimen with the treating healthcare team beforehand in these cases.
Seek advice for diarrhoea before starting a course of supplements
Have diarrhoea during or after antibiotics assessed promptly by a doctor, especially with fever, blood in the stool, more severe abdominal pain or marked deterioration. Clostridioides difficile infection is also possible. Seek help quickly for significant weakness or clear signs of dehydration. Do not stop or change antibiotics on your own.
Frequently asked questions
How long does recovery take?
It varies from person to person; no fixed time frame can be promised for everyone.
Does everyone need to take probiotics?
No. An appropriate indication and the specific preparation matter.
Is every fermented food equally effective?
No. Their composition, live cultures and studied effects differ.
Further reading
Supporting the gut after antibiotics
