When a mother takes drugs, most of them are transferred to the breastmilk and then more or less to the baby.
However, only a few drugs harm breastmilk, and most drugs are safe for mothers during the breastfeeding period.
Considering the baby's healthy growth, the advantages of breastfeeding are said to outweigh the risks of drugs, but you need to obtain the advice of a medical specialist and evaluate appropriately the detriments and danger of stopping breastfeeding with the amount of drugs that are transferred to the breastmilk, as the risks depend on the kind and amount of the drug.