Which illicit drug is considered safe for breastfeeding?

Methadone is considered the safest option for breastfeeding among the choices listed. Methadone is a synthetic opioid often used in the treatment of opioid addiction and chronic pain management. It is classified as a Category C drug by the FDA, meaning that it should only be used when the potential benefits justify the risks to the fetus or breastfeeding infant.

When a mother is on a prescribed methadone maintenance program, studies have shown that it is typically safe for the infant when breastfeeding occurs. The levels of methadone that pass into breast milk are relatively low, and breastfeeding can also provide numerous benefits to the baby, such as immune protection and nutritional advantages. Additionally, breastfeeding can help in maintaining the mother's recovery and stabilizing her health, further benefitting the breastfeeding relationship and infant well-being.

In contrast, other substances listed such as cocaine, heroin, and marijuana are not safe for breastfeeding. These drugs can have detrimental effects on the breastfeeding infant, including adverse developmental outcomes and withdrawal symptoms. Therefore, methadone stands out as the most acceptable option in terms of safety for both the mother and the infant regarding breastfeeding.