On risks and side effects: Interactions in general: How do they occur, and how can they be avoided? What should be considered in self-medication and dietary supplements, and what interactions with permanent medications are typical? Side effects in general: How frequent and dangerous are they? What should special risk groups be aware of, such as pregnant and breastfeeding women, children, and elderly people? More and more individuals need to take permanent medication, especially in advanced age and with chronic diseases, often several at the same time. Many consumers also purchase self-medication products and dietary supplements. Interactions are often pre-programmed. However, doctors and pharmacists often hesitate to discuss this topic with patients. It is essential for informed decision-making regarding treatment options.