Drug Review Proces

Many methods have been published, based on TLC-I HPTLC, for the quahtative analysis of drug or medical products. Numerous examples of quahty control proce-I dures could be presented here. It is interesting to look at j quahty control procedures for medicinal plants. Indeed, s" in this case, the only way to control the quality of a me-I dicinal product is to make sure that the raw materials are 8 correct (i.e., that they contain the desired active ingre-I dients and the other constituents at the usual standard concentrations). The reader should refer to a review ar-i tide such as in Ref. 4. HPTLC offers unbeatable char-I acteristics for such uses its simphdty, rapidity, and the... 

Still, including all the possible feedback loops would strangle this discussion, so we review the drug experience and the factors that influence it as if everything proceeds linearly. We chart the path in Table 4.1. For each of the steps in the table there may be two or more factors to consider. By the end of this chapter you will begin to understand the great complexity of what humans experience when they take drugs. 

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