Background: The first requirement of this concept paper is proper understanding of homoeopathy, which throws a tough challenge before science. How do high potency (beyond 12c) homoeo-medicines, which are devoid of original medicinal substances, differ from one another and how such medicines cure diseases-these two mysteries of homoeopathy are yet to be solved to the satisfaction of scientists in general. Many investigators are seriously trying to solve these two-century-old mysteries.Method: This paper examines the works which are logically consistent and promising in nature. In this process it does not consider the works which try to explain the homoeo-mysteries in terms of presence of starting material in some form or other. It also examines the mechanism of action of main stream medicines.Result: Analysis of various works on homoeopathy fulfilling the above criteria suggests that structures of water or chemicals can serve as medicines. Further, finding a strong parallelism between mechanisms of action of homoeopathy and main stream medicines this article arrives at the structural model as a generalized concept of medicines stated as: A substance is to be recognized as a medicine if it has the capability of curing disease(s) while its medicinal property is to be attributed to molecular structure of vehicle like water or of distinct chemical substance when it exists.
Conclusion:The structural model of medicines seems to have a general validity for all kinds of medicines -homoeopathy and non-homoeopathy.