Capers are likely safe for most people when eaten as a food. There is not enough information available to know if capers are safe in medicinal doses. Capers can cause skin rash and irritation.
Special Precautions & Warnings:
Pregnancy and breast-feeding: Capers are likely safe when eaten as food, but there is not enough information to know if they are safe in the larger amounts that are used as medicine. If you are pregnant or breast-feeding, stick with food amounts until more is known.
Diabetes: There is some concern that capers might alter blood sugar control in people with diabetes. Monitor you blood sugar closely if you have diabetes and use capers.
Surgery: Capers might affect blood sugar levels. There is some concern that capers might interfere with blood sugar control during and after surgery. Stop using capers at least 2 weeks prior toa scheduled surgery.