What will happen if I use expired nicotine patches?

I googled your . Question since no one was answering you . According to one person, their pharmacist said it simply would be less potent. They advised them to try and see if the patch seems to help. Don't put on more than 1 patch at a time. One person said it could lead to depressive symptoms, but had no scientific evidence for that prediction. That's what i found on google hope it helps. Ask another pharmacist.