Your doctor will need to check your white blood cell count before and after you take dimethyl fumarate.
If you are pregnant, planning a pregnancy, or may be pregnant, dimethyl fumarate may not be a good option for you. It is not known if it is safe for pregnant women.
Dimethyl fumarate may not be a good option for you if you are breastfeeding. It is not known if this drug can be passed into breast milk.
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