Patch: Nicotine serum levels in the mother (hence in the milk) may be similar to those of women who smoke if high concentration patches are used. Lowest effective concentration ones for treatment of tobacco dependency are recommended. Patches should be taken off while sleeping. Chewing gum: Nicotine serum levels in the mother (hence in the milk) may be one-half than those in women who smoke but may arrive to be as high as in smokers. The fewer number of chewing gums effective for treatment of tobacco dependency is recommended, with a lapse of 2-3 hours before the next breast feed after taking a nicotine chewing gum. Inhaler: Nicotine serum levels in the mother (hence in the milk) is usually one-eighth than those in women who smoke. The fewer number of inhalations that would be effective for treatment of tobacco dependency are recommended. Offspring of women who smoke are at lower risk of harm to health when they are breastfed than formula fed. Breastfeeding minimizes risks originated by tobacco smoke exposure. Those risks are even lower with the use of Nicotine Replacement Therapy (patch, chewing gum or inhaler) See below the information of these related products: