Krank. de is an online health information and advice resource designed to help readers better understand illnesses and make informed decisions about their health. Its content covers diseases, symptoms, causes, diagnosis, treatment, and prevention, with accessible explanations intended for a general audience.

Visitors can explore alphabetical guides to conditions, symptoms, medicines, active ingredients, pathogens, treatments, and health topics, as well as information on laboratory values and medical terminology. The site also features articles on first aid, vaccinations, nutrition, diets, vitamins, medicinal plants, home remedies, and alternative approaches such as homeopathy and Schüßler salts. Product checks discuss supplements and other preparations, including their ingredients, uses, potential benefits, drawbacks, and risks.

Additional resources include food and calorie tables, health and care advice, a BMI calculator, and a discussion forum. Krank. de presents its material as a way to build health knowledge and prepare for conversations about care, while emphasizing that online information generally cannot replace professional medical advice