There is quite a bit of debate on the issue of reusing bottles that have previously contained homeopathic remedies and whether reuse of these bottles constitutes good practice. How could you ever guarantee that you have removed all traces of the previous remedy?
Hahnemann apparently recommended the use of hot coals for the process.
Today, the practice is to wash the bottles, and ensuring they have been rinsed very well, then placing them in an oven at 180c for 20 minutes. Then allowing the bottles to cool down, and repeating this process.
Naturally, you would not expect the caps to survive this process and hence they would have to be replaced.
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