Sanatogen

Sanatogen was a brand name for a tonic and nutritional supplement originally produced by the German company Bayer from 1907. It was composed primarily of milk protein (casein) and sodium glycerophosphate. Marketed as a restorative tonic, it was popular in the early 20th century, often promoted as beneficial for nerve health, fatigue, and general well-being.

The product's popularity stemmed from its perceived health benefits, although scientific evidence supporting these claims was limited. Prominent figures, including members of royal families and celebrities, endorsed Sanatogen, contributing to its widespread appeal.

After Bayer acquired the brand, production continued, and it was marketed in various forms, including powder and tablets. The formulation and marketing of the product evolved over time.

The brand changed ownership several times after World War II. In 2004, the Sanatogen brand in the UK was acquired by Roche Consumer Health. In 2010, Roche Consumer Health was acquired by Bayer. In subsequent years, the brand changed hands again.