Which substances are common examples of Schedule III drugs?

Schedule III drugs are substances that fall under the Controlled Substances Act in the United States and are recognized for having a moderate potential for abuse, leading to psychological or physical dependence. The correct choice includes codeine and steroids, which are widely known examples within this classification.

Codeine is an opiate used primarily for pain relief, while anabolic steroids are synthetic substances similar to the male sex hormone testosterone, often used for various medical conditions and also for muscle-building purposes. Both of these substances, while they do have legitimate medical uses, can lead to misuse and dependency, thereby categorizing them as Schedule III drugs.

The other choices include substances that are classified differently: cocaine and heroin are Schedule II due to their high potential for abuse; marijuana and LSD are not classified as Schedule III, with marijuana having complex legal status depending on jurisdiction and LSD classified as a Schedule I drug; amphetamines and barbiturates are primarily classified as Schedule II due to their high potential for abuse and are tightly regulated.