Pharmacology In Drug Discovery And Development Direct

The Bridge to Medicine: The Central Role of Pharmacology in Drug Discovery and Development

This is perhaps the most critical hurdle. Pharmacologists conduct acute and chronic toxicity studies in animal models. They look for damage to major organs (liver, kidneys, heart) and determine the "No Observed Adverse Effect Level" (NOAEL). This data sets the starting dose for human trials.

• Objective: Safety and tolerability, but also PK in humans.
• Key metric: Single Ascending Dose (SAD) and Multiple Ascending Dose (MAD) studies. Blood and urine are sampled over 72+ hours to calculate human clearance, volume of distribution, and half-life.
• Pharmacogenomics: Clinical pharmacologists now screen for genetic variants (e.g., CYP2C19 poor metabolizers). A drug that is safe in 95% of people might be toxic in 5% who cannot metabolize it.

Let's follow the pharmacological tasks through each clinical phase. pharmacology in drug discovery and development