What defines a 'Counterfeit Substance'?

A 'Counterfeit Substance' is defined as a substance that bears an unauthorized manufacturer's trademark, which indicates it has been produced without the appropriate legal rights or authorization to use that trademark. This definition is crucial in distinguishing legitimate products from those that are deceptive or fraudulent. Counterfeit substances often mislead consumers regarding the quality, efficacy, and safety of the product, posing significant health risks.

While other options mention various aspects of substances—such as an expired controlled medication or one lacking proper labeling—these do not capture the essence of what makes a substance counterfeit. The primary characteristic of a counterfeit substance lies in the unauthorized use of branding, which directly relates to issues of intellectual property and consumer protection. This distinction is important for understanding legal classifications and the implications of counterfeit products in healthcare and law enforcement contexts.