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Phytochemicals obtained by eating a healthy, balanced diet are generally believed to be safe. Phytochemicals may be found in almost all fruits and vegetables, as well as grains, legumes (peas and beans), nuts, seeds and tea.

There is no reliable scientific evidence that taking phytochemicals in supplement form is as beneficial as consuming foods that contain phytochemicals. It is also unknown what amount of a phytochemical supplement would be needed to produce the desired effects.

Phytochemical supplements may have possible interactions with some medications.  Therefore, it is recommended to talk to your doctor before taking phytochemical supplements.

It is unclear what, if any, potential risks may be associated with phytochemicals. Research is ongoing regarding the specific actions phytochemicals perform in the human body. The beneficial or adverse effects of phytochemicals have not been conclusively determined.