Hematogen

Hematogen, also known as Hämatogen in some languages, is a historical medicinal food or dietary supplement derived from dried animal blood. The product is typically produced by processing blood to create a hemoglobin-rich base, which is then blended with carbohydrate sources such as sugar or glucose and often with milk solids or trace iron compounds. The resulting mixture is formed into a paste or bar intended to be eaten as a nutritional aid.

Preparation and composition vary by region and manufacturer. The core element is processed blood, usually from cattle or other livestock, treated to reduce microbial risk, dried, and milled into a powder or paste. This base is combined with sugars and sometimes additional ingredients to improve taste and nutritional value. The final product is marketed as a concentrated source of iron, protein, and calories, and has historically been recommended for individuals with iron-deficiency anemia, fatigue, or weakness.

History and current status vary by country. Hematogen gained prominence in parts of Europe and the Russian-speaking world in the late 19th and early 20th centuries as a convenient iron-rich tonic. With advances in medicine and the availability of modern iron supplements, the routine use of hematogen declined in many places. Today it remains relatively uncommon in mainstream medicine and is more often encountered as a traditional or niche dietary product. Regulatory status can differ, reflecting concerns about sourcing and safety of blood-derived ingredients, as well as dietary and ethical considerations.