Cimetidine and Other H2 Blockers

H2 blockers, used to treat gastrointestinal ulcers and/or reduce stomach acid, may improve survival among people with cancer, especially after colorectal cancer resection.

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Berberine

Berberine, an active ingredient in several plants, shows good effects in managing high blood sugar and excess body weight, plus lower risk of colorectal cancer.

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Artesunate and Artemisinin-based Drugs

Prescription drugs derived from the Artemisia annua plant show very limited benefit in improving cancer treatment outcomes.

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