Nicotine levels in the blood of the mother (hence in mother's milk as well) are ten times lower than that reached in women's who smoke normal cigarettes. However, because of concomitant appearance of chemical products in the electronic cigarettes that are considered to be toxic, the lack of information of effects on the heath welfare and a high risk of becoming a long-lasting substitute of tobacco consumption, it should not be used as a replacement therapy. For this purpose is recommended the use of nicotine patches or chewing gum. Nicotine excretion is lower at two hours after inhalation.