What is a key purpose of drug trials?

• A. Toxicity, efficacy and dose
• B. Color and branding
• C. Supply chain stability
• D. Marketing potential

Answer: (A)

Drug trials are designed to determine whether a new medicine is safe and effective, and to find the right amount to use. They look for toxicity to identify potential harm and its severity, assess efficacy to see whether the drug produces the intended therapeutic benefit, and explore different doses to find the dose that offers the best balance of benefit and risk. This combination—safety, effectiveness, and dose finding—forms the backbone of evaluating a drug before it’s approved for wider use. Elements like color/branding, supply chain stability, or marketing potential aren’t the focus of these trials; those aspects come later in manufacturing, branding, and commercialization processes.