Alfalfa is considered safe when
taken by healthy people. Alfalfa seems to increase certain immune system functions.
In some cases, alfalfa sprouts have
been contaminated with Salmonella and E. coli. This has caused outbreaks of diarrhea and
hemolytic uremic syndrome (HUS). This is a disease associated with E. coli. There have
been improvements in how alfalfa is processed, which has lowered these risks. To reduce
your risk, you should eat alfalfa sprouts right after you buy them. Don’t store them for
a long time.
Women who are pregnant or
breastfeeding should talk to their healthcare provider before taking any herbal
Alfalfa may reduce how well birth control pills work. If you take
alfalfa and use birth control pills that contain estrogen, use an additional form of
Alfalfa contains high amounts of
vitamin K. This can reduce the blood thinning (anticoagulant) action of the medicine
warfarin. If you’re taking this medicine, ask your healthcare provider how much alfalfa
you can eat.