Homeopathic remedies are derived from plants, herbs, minerals, and animal products.
Complementary medicine (CM) is used by one third to one half of cancer patients throughout the world.
There is no evidence that homeopathics interfere with conventional treatments because there is hardly any substance in them.

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Nevertheless, homeopathics may do more harm than good if they delay the use of effective conventional therapies.
Herbal remedies can interfere with the effectiveness of conventional treatments or potentially increase side effects.
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U.S. Food and Drug Administration.A New Era for Homeopathic Drug Product Regulation.
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National Center for Complementary & Integrative Medicine.Cancer: In depth.