Phentermine controlled substance schedule?

What Schedule is phentermine classified under?

Phentermine is a controlled substance classified as Schedule IV under the U.S. Controlled Substances Act (CSA). [1]

Does phentermine’s schedule ever change?

In general, phentermine’s legal status is tied to its federal CSA scheduling. If a drug’s schedule changes, it would require a formal regulatory action by U.S. authorities. For phentermine specifically, its classification is Schedule IV. [1]

Why is phentermine Schedule IV (what makes it controlled)?

Schedule IV typically indicates a drug with a lower potential for abuse than Schedule I–III, but with recognized risk of misuse and dependence. Phentermine is regulated accordingly. [1]

Is phentermine also regulated at the state level?

Yes. Even though the question of “schedule” refers to the federal CSA classification, states also control prescribing, dispensing, and recordkeeping for controlled substances. The federal Schedule IV status is the baseline that state rules build on. [1]

Sources

1. https://www.drugs.com/controlled-substances/phentermine.html