A. If you drink herbal tea when you’re pregnant, you need to use caution. In general, you can have teas made from foods you can safely eat, such as oranges, apples and ginger. Even then, you shouldn’t have multiple cups, since the ingredients are very concentrated. Stay away from some of the more esoteric herbs, since their safety in pregnancy is unknown. Herbs can be drugs, so just because they are natural does not mean they are safe in pregnancy. Some ingredients, such as rasp-berry leaves, are known to be uterine stimulants and should be avoided.