Sensodyne should not be taken by breastfeeding women, and the drug insert for Sensodyne clearly states that it is contraindicated for pregnant and breastfeeding women. Sensodyne is a compound preparation, which contains amantadine, acetaminophen, artificial oxalic acid, morphine and so on. Amantadine, morphine, acetaminophen, etc. can be passed to the nursing baby through breast milk, the growth and development of the fetus will have certain adverse effects, so it is prohibited to use during lactation, and if you have to use it, you should suspend breast milk.