The acronym FODMAP stands for “fermentable oligosaccharides, disaccharides, monosaccharides, and polyols.”

These are all types of sugars that are poorly absorbed by the small intestine.

Fructans are non-digestible and thus are available to be acted upon by gut bacteria.

Glass of milk with caution tape in front of it

Colleen Butler / Getty Images

3.GOS:GOS stands for galactooligosaccharides, which are sometimes called galactans.

GOS can be found in legumes, including beans, chickpeas, and lentils.

Like fructans, GOS are non-digestible and thus have similar effects on the body and in IBS patients.

4.Lactose:Lactose is the main sugar found in milk and other dairy products.

5.Polyols:Polyols are sugar alcohols with scientific names that typically end in “- ol.”

(Note: Not all things ending in “-ol” are polyols.)

People who have IBS are typically not sensitive to every FODMAP key in.

TheMonash University Low-FODMAP Diet Appis an excellent resource for identifying the specific FODMAP content of common foods.

Are there over-the-counter medications for IBS?

Yes,nonprescription medicationssuch as anti-diarrheal medication, laxatives, and probiotics, can be used for symptom relief.

Your healthcare provider may also want you to try a low-FODMAP diet.

2020;12(1):148.

Published 2020 Jan 4. doi:10.3390/nu12010148

The Ohio State University.Should you avoid eating fructans?

Monash University.Enzyme therapy can help reduce symptoms in IBS patients sensitive to galacto-oligosaccharides (GOS).

2017;36(1):38.

Published 2017 Nov 21. doi:10.1186/s41043-017-0113-1

Monash University.What are the polyols?

Tuck C, Barrett J.Re-challenging FODMAPs: the low FODMAP diet phase two.J Gastroenterol Hepatol.