Reducing Complexity
The desire to simplify clinical situations and variables is one of the important reasons that physicians often prefer highly refined and regulated prescription drug preparations, as opposed to less refined and regulated products, often marketed as "natural" to imply safety.
Products from nature are essentially always complex mixtures of large numbers of different chemical agents, many only partially understood in term of usual desirable and undesirable responses, relationships of these effects to specific doses and with varying amounts of dose present within any given sample available.
The pharmaceutical industry highly purifies, concentrates and sometimes makes very controlled modifications of agents obtained from natural sources, when there is no alternative source, so as to select out and greatly reduce the variables in the treatment agent offered. Ratios of relative responses, often summarized using the concept therapeutic index, are utilized to help understand and communicate treatment responses.
A pharmaceutical grade agent does not make the patient any more simple but it does greatly simplify, narrow and make more definable and predictable both the usual desirable and undesirable effects of the treatment agent, based on careful tracking of the responses of many individuals who have taken the agent, in widely varying amounts and situations, in the past. This purification can greatly improve the probability for both the patient and the physician that the resulting responses to the treatment are likely to be more predictable and controllable.
Read more about this topic: Therapeutic Effect
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