Treatise on the Effects of Coffee

By Samuel Hahnemann

A short, sharp and unexpectedly modern-feeling pamphlet from 1803 in which Hahnemann dissects coffee as a drug rather than a beverage, cataloguing what habitual use does to sleep, digestion and temper. Written before homeopathy had a name, it explains why coffee became the classic antidote in homeopathic practice — and it is a genuinely enjoyable entry point for anyone daunted by the Organon.