Final answer:
The Controlled Substances Act designates opium as a Schedule III drug (CSA). The maximum permitted limits, which are based on concentrations averaged over three years and not to be exceeded more than once a year, are what make opium eligible for Schedule III classification. The Schedule III category also includes other drugs like heroin, fentanyl, morphine, and prescription painkillers.
Step-by-step explanation:
Opium is classified as a Schedule III substance under the Controlled Substances Act (CSA) in the United States.
The maximum allowable limits for Opium to be classified as Schedule III are as follows:
- 99th percentile of 1-hour daily maximum concentrations, averaged over 3 years
- Not to be exceeded more than once per year
It is important to note that the CSA also includes other substances such as Heroin, Fentanyl, Morphine, Oxycodone, Vicodin, methadone, and other prescription pain relievers in the Schedule III category.