One should not take unnecessary medications during
pregnancy.
Most medications commonly taken by those with
SLE do not get through the placenta and are safe for the baby. Medications such as prednisone, prednisolone,
and probably methylprednisolone (Medrol) are usual
considered safe to take.
Some
medications do reach the baby and are often used when it is necessary to treat the baby. Such medications
as dexamethasone (Decadrol, Hexadrol) and betamethasone (Celestone) might be used to help the lungs mature more rapidly
if the baby will be premature.
A small dose of aspirin is safe and often used to protect against toxemia.
Imuran and Plaquenil do not harm babies. But Cytoxan is definitely harmful. Especially if taken
during the first three months of pregnancy.
http://www.lupusnwoh.org/Pregnancy.html