0 to. You should not breast-feed while you are using Glucophage. I looked up the side effects here and I am having quite a bit of them.

It glucophage not known whether metformin passes 1000 breast milk or if it could harm a nursing baby. It is also used in women with a certain disease of the ovaries (polycystic ovarian syndrome). Keep all medications away from children and pets.

This is not a complete list of side effects, and others may occur.

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