Withdrawal from drugs, called Neonatal abstinence syndrome (NAS), is a group of symptoms that occurs to babies whose mother took or used drugs (prescription, addicting, illegal, pain pills, or drugs for addiction treatment) during pregnancy. Medicines the mother takes while pregnant, the baby also takes. Babies may experience withdrawal after delivery, and may need treatment. There are different ways to treat babies with withdrawal - about 50% of doctors use morphine, an opiate, to treat these babies, the rest uses other drugs, like clonidine and phenobarbitol.