Krank.de is a German-language online health information portal offering reference content on medicines, illnesses, symptoms, diagnoses, treatments, and other health topics. Its medicine A–Z lexicon covers prescription and non-prescription drugs, as well as herbal and homeopathic remedies. Entries explain uses, recommended dosages where applicable, side effects, interactions with other medicines, and relevant information about active ingredients. The site also discusses interactions involving foods and drinks and notes when medical advice is essential; its information is not a substitute for guidance from a treating physician.

Beyond medicines, Krank.de provides resources on medical terminology, diagnostic tests, blood and laboratory values, pathogens, first aid, nutrition, vitamins, medicinal plants, and complementary health approaches. It also features health guides, a forum, and tools such as a BMI calculator. The portal explains medication groups and offers information about online pharmacies as a potential source for ordering medicines, noting that prescription drugs require a valid prescription. Krank.de presents its content as a practical reference for people seeking to understand medicines and health topics, and says its medicine directory is regularly expanded.