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374 No amount of logic will alter the nature of things, nor persuade the drugs of the Amboshtha group to exercise a purgative virtue. Hence an intelligent physician should adhere to the officinal recipes given in the books on medicine, and not introduce innovations, however logical or probable, into the realms of applied or practical Therapeutics.

Thus ends the fortieth Chapter of the Sutrasthanam in the Sushruta Samhita, which deals with drugs and their flavours, virtues, and digestive (chemical) transformation.