It can feel confusing when bowel habits improve, worsen, or simply change while you are taking an antibiotic—or after the course ends. A change is information, not proof that an infection, IBS, an IBD flare, or a “microbiome reset” explains what is happening.
Build a short timeline
For the duration of the course and the week after, note the antibiotic name exactly as prescribed, first and last dose, bowel frequency and consistency, abdominal pain, fever, nausea or vomiting, hydration, and any new medicines or illness. Keep food notes brief and factual. Do not use the record to self-treat, repeat an antibiotic, or add supplements.
Use it to make a better call
Hara can help you check the current context, log a change, retrieve a short timeline, and compare it with your usual baseline. Share the record with the clinician who prescribed the antibiotic. They can decide whether a symptom needs evaluation and whether the original treatment plan should change.
When not to wait
Seek timely medical advice for severe or persistent diarrhea, blood in stool, fever, worsening abdominal pain, dehydration, or symptoms that make it difficult to drink fluids. Contact your prescriber rather than stopping a prescribed antibiotic on your own unless urgent medical guidance tells you otherwise.