Classical homeopathy is the strict adherence to the rules set forth by the founder of homeopathy, Samuel Hahnemann. These include prescribing only one remedy at a time. This is very important as remedies can affect each other and cancel out when given simultaneously.
Another key principle of classical homeopathy is basing a prescription solely on the “symptoms” of the patient, meaning perceptible change from the baseline, be it physical, mental or emotional.
This immediately rules out the possibility of homeoprophylaxis, or giving a remedy to avoid future infections – similarly to vaccines. This is because there are no symptoms yet, thus the remedy will not act. Unfortunately a lot of homeopaths practice homeoprophylaxis. It simply does not work.
Ignoring the symptoms has also given rise to giving remedies based on the infecting agent. Some homeopaths will prescribe the homeopathic remedy based on the flu virus, in a case of the flu. Similarly, giving remedies made from any disease causing material has also become prevalent. This is usually termed “tautopathy” and has given rise to all sorts of “methods” in homeopathy that intend to “detoxify”. One such instance could be “detoxifying” someone after antibiotics.
This is considered bad practice in classical homeopathy. In ANY homeopathic case, a remedy must chosen based on the symptoms of the patient.
In very rare cases, remedies made from conventional medicine and bacteria and viruses might become necessary, but these instance are the exception rather than the rule. For instance, an extremely severe bout of the flu might leave residual effects on a patient. It is conceivable that in such a case, the patient may need a dose of the homeopathic remedy made from the flu virus – as part of the treatment, which will then continue normally by taking into consideration the symptoms and prescribing the remedy most similar to the case.