This pamphlet addresses duration of action, drug affinities, and sidedness with the author gleaning the information from Boenninghausen's Lesser Writings. The book discusses in detail the inter-relationships between the various drugs of the homeopathic Materia Medica with a list of complimentary remedies, inimicals, follow well remedies and antidotes together with the proposed duration of action of the remedies. It provides the busy practitioner with a quick glance of vitally relevant information in an easy to understand & comprehend format.