The Origins of Pharmacology in the 16th Century

  Figure 2.
Figure 2.

Dose-response relationship illustrating Paracelsus’ quotation using two variables. At dose X1 50 % of a population shows the desired action (A) and at dose X2 50 % of the same population shows an undesired action or side-effect (B).

This Article

  1. MI June 2005 vol. 5 no. 3 144-149