Dill is likely safe when consumed as a food. Dill is possibly safe for most people when taken by mouth as a medicine.
When applied to the skin, dill can sometimes cause skin irritation. Fresh dill juice can also cause the skin to become extra sensitive to the sun. This might put you at greater risk for sunburns and skin cancer. Avoid sunlight. Wear sunblock and protective clothing outside, especially if you are light-skinned.
Special Precautions & Warnings:
Pregnancy and breast-feeding: It’s possibly unsafe to use dill as a medicine if you are pregnant. Dill seed can start menstruation and that might lead to a miscarriage.
There is not enough reliable information about the safety of taking dill as a medicine if you are breast-feeding. It is best to stick to food amounts.
Allergy to plants in the carrot family: Dill may cause allergic reactions in people who are allergic to plants in the carrot family. Some of these include asafoetida, caraway, celery, coriander and fennel.
Diabetes: Dill extract might lower blood sugar in people with diabetes. Watch for signs of low blood sugar (hypoglycemia) and monitor your blood sugar carefully, if you have diabetes and use dill extract in amounts larger than the amounts normally found in food.
Surgery: Dill extract might lower blood sugar. There is concern that using dill extract might interfere with blood sugar control during and after surgery. Stop taking dill extract at least 2 weeks prior to a scheduled surgery.