A small number of studies have suggested that fenugreek may help lower blood sugar levels in people with diabetes or prediabetes, but most of these studies were not of high quality.

It’s uncertain whether it can increase milk supply in breastfeeding women; studies have had mixed results.

The evidence for other health conditions is too limited for any conclusions to be reached.

Research partly funded by NCCIH is examining the effects of fenugreek on the function of adipose (fat) tissue and the composition of the gut microbiota (the microorganisms that live in the digestive tract) in mice.

Side Effects Of Fenugreek

Fenugreek is believed to be safe in the amounts commonly found in foods. Its safety in larger doses is uncertain. It should not be used by children as a supplement. Potential side effects include diarrhea, nausea, and other digestive tract symptoms and rarely, dizziness and headaches. Large doses may cause a harmful drop in blood sugar. Fenugreek can cause allergic reactions in some people. Cases of liver toxicity have been reported in people taking it alone or in combination with other herbs.

Fenugreek is not safe for use during pregnancy in amounts greater than those found in food; its use has been linked to increased risks of birth defects in both animals and people. Little is known about whether it’s safe to use in amounts greater than those found in food while breastfeeding. 


Take charge of your health—talk with your health care providers about any complementary health approaches you use. Together, you can make shared, well-informed decisions.


All information has been provided courtesy of MedLinePlus from the National Library of Medicine and from the FDA.