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Witch hazel is POSSIBLY SAFE for most adults when small doses are taken by mouth. In some people, witch hazel might cause stomach upset when taken by mouth. Large doses might cause liver problems.
Witch hazel contains a cancer-causing chemical (safrole), but in amounts that are too small to be of concern.
Special Precautions & Warnings:Children: Witch hazel is POSSIBLY SAFE for children when applied directly to the skin.
Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking witch hazel if you are pregnant or breast-feeding. Stay on the safe side and avoid use.
APPLIED TO THE SKIN:
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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.