|  | The use of one remedy at a
              time that has been selected according to the law of
              similars is what is known as classical homoeopathy. It
              takes training and skill for the classical homoeopath to
              prescribe the correct remedy required in a person's case.
              Using one remedy at a time does not mean only one remedy
              ever is used in the patient's case. In a severe acute
              illness the remedy may be changed more frequently than in
              long standing chronic illness. A trained classical
              homoeopath will know when to repeat the dose and when to
              change the remedy. There are people who call themselves
              homoeopaths who prescribe many different remedies in
              combination. This is called polypharmacy and demonstrates
              a lack of understanding of the law of similars. 
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