[How to dose correctly? An overview of debates in the United States, Great Britain and Germany (1830s to 1970s)].

The dispute over low and high potencies is no longer current in today's homeopathy, but from the 1830s to the 1960s it played a major role in scientific discourse. The devotees of high potencies claimed to be the only true Hahnemannians, while their antagonists tried to practise a scientific, modernized homeopathy. The former ultimately triumphed in Britain, the U.S. and Germany, but this happened on quite different routes in each of these countries. As well as Hahnemann, other scholars, such as Constantin Hering, James T. Kent and Karl Koetschau, played important roles in the international disputes.