What is neonatal abstinence syndrome?

Neonatal abstinence syndrome (also called NAS) happens when a baby is exposed to drugs in the womb before birth. A baby can then go through drug withdrawal after birth. NAS most often is caused when a woman takes opioids during pregnancy. Opioids are painkillers (like codeine, hydrocodone, morphine and oxycodone) your provider may prescribe if you’ve been injured or had surgery. The street drug heroin is also an opioid.

Babies with NAS are more likely than other babies to be born with low birthweight (less than 5 pounds, 8 ounces), have breathing and feeding problems and seizures. Learn more at:

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