What is the focus of animal testing in the context of drug safety?

The focus of animal testing in the context of drug safety is to estimate the safety margin. This involves using animal models to assess the potential risks and adverse effects a drug may have prior to its use in humans. Animal testing helps researchers understand how a drug is metabolized, its toxicological profile, and the dosages that may be safe or harmful. By determining the safety margin, scientists can identify the range in which the drug can be administered safely, which is critical for protecting human participants in later clinical trials.

This process is essential for ensuring that any new drug is not only effective but also safe for human use, thus playing a crucial role in the drug development process and regulatory approval. The other options, such as determining flavor profiles, evaluating marketing strategies, or testing user satisfaction, are not primary concerns in the realm of drug safety and do not contribute to understanding the safety or efficacy of a new drug.