I started using fenugreek to increase my milk supply. It works well, my milk supply increased after the 3rd day. However, I recently did a search only and found this commend online:
"Fenugreek - although this has been recommended in the past to increase milk supply, it contains coumarin (which is a BIG no-no when nursing) and nicotine. Both can adversely affect the heart rate and blood pressure in mom and babe!"