Which of the following is MOST accurate about methadone and heroin?

A) They cannot cross through the placenta to the unborn child.
B) They can cause excessive birth weight.
C) They can cross through the placenta but cannot cause addiction in the fetus.
D) They can readilycross through the placental membrane to the fetus.

Methadone

A synthetic opioid used for pain management and as part of drug addiction detox programs, particularly for heroin.

Placenta

A structure that forms in the uterus while pregnant, supplying the fetus with oxygen and nutrients while also eliminating waste via the umbilical cord.

Heroin

An opioid drug made from morphine, a natural substance taken from the seed pod of various opium poppy plants, highly addictive and illegal.