Some examples of well-studied herbal supplements in the context of cancer are traditional Eastern herbal medicines, garlic, caffeine, guarana, spearmint and peppermint. A decades-old body of research also points to the use of cannabis and CBD for managing symptoms of cancer treatment. Vitamins and nutrients that have been thoroughly studied include vitamin D, vitamin E, vitamin C, vitamin A and beta-carotene, selenium, zinc, and combinations of these vitamins. Supplements that may improve gut health symptoms caused by cancer treatment include glutamine, probiotics, ginger, short-chain fatty acids, proteolytic enzymes, kefir, honey, and propolis, among many others.
Which supplements are the most studied for cancer?
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•Last Updated: May 16, 2025
Well-studied herbal supplements for cancer include traditional Eastern herbal medicines, garlic, caffeine, guarana, spearmint, and peppermint, and cannabis and CBD are noted for managing treatment symptoms. Additionally, vitamins such as D, E, C, A, selenium, and zinc, along with supplements like glutamine and probiotics, have also been extensively researched.