Why do doctors recommend Arnica pills for cosmetic surgery?

I've had several cosmetic surgeries and each time been told to take arnica pills, so I researched and discovered homeopathy is 100% water/ sugar pills Homeopaths explanation is: magic Scientific experiments: placebo effect Homeopathic pills & creams are so diluted that not even a single molecule exists in the final preparation, ie 1 drop of active substance in 10,000 parts water! So doctors who recommend we take homeopathy either A) believe in magic or B) are knowingly giving us sugar pills.

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