I have IBS and am on a FODMAP diet. Are probiotics helpful?

Question

Hello doctor,

I have been having alternating constipation and diarrhea for months, and my recent colonoscopy came back normal. My CRP is 4 mg/L, and stool tests are clear, so the doctor said it is IBS.

I am on a low-FODMAP diet, but bloating and abdominal cramps persist. I am worried about a few things, like-

Should I consider medications like Rifaximin or antispasmodics?
Can stress and anxiety worsen IBS symptoms significantly?
Are probiotics genuinely effective in restoring gut balance, or is it just a temporary relief?
Also, should I avoid gluten completely even if celiac tests are negative?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

It sounds like you have been through a lot dealing with these ongoing digestive issues, and it is understandable to feel frustrated when tests come back normal yet the symptoms continue to affect daily life.

Since your colonoscopy and stool tests are clear and CRP (C-reactive protein) is normal, it does support the diagnosis of irritable bowel syndrome, which can cause alternating constipation and diarrhea, bloating, and abdominal cramps without structural disease.

Rifaximin is sometimes prescribed for IBS (irritable bowel syndrome) with predominant bloating or diarrhea, as it helps modify gut bacteria and may provide relief for some patients. Antispasmodic medications such as Hyoscine or Mebeverine can also help ease abdominal cramping.

Stress and anxiety can definitely worsen IBS symptoms because the brain and gut are closely linked, so practices like mindfulness, yoga, deep breathing, or cognitive behavioral therapy can be beneficial.

Probiotics may offer some benefits for bloating and stool consistency, but their effect varies among individuals and may take several weeks to become noticeable. If they help, they can be continued safely, but if not, it is fine to stop.

Regarding gluten, if your celiac tests are negative, you do not need to completely avoid it unless you notice that gluten-containing foods clearly trigger your symptoms, in which case reducing rather than fully eliminating them may be reasonable.

You are managing this condition very thoughtfully, and with the right combination of diet adjustments, stress management, and possibly medication, most people eventually find a balance that greatly improves their comfort and quality of life.

I hope this helps.

Thank you.