The workshop provides a detailed overview of drug, nutrient, and herbal interactions, aiming to equip nutritionists and dietitians with safe clinical practice knowledge. It explains pharmacokinetics and pharmacodynamics and how nutritional status and organ function influence drug absorption and metabolism. The session highlights both beneficial and harmful herb–drug interactions, along with the impact of macronutrients on drug activity, particularly enzyme systems like CYP450. It also addresses special population considerations, including pediatric, geriatric, and pregnant clients, and discusses disease-specific medication use such as in Type 2 diabetes.