Milk thistle Side Effects

Some side effects of milk thistle may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Applies to milk thistle: oral capsule, oral tablet

Although rare, allergic reactions to milk thistle have been reported. Stop taking milk thistle and seek emergency medical attention if you experience symptoms of a serious allergic reaction including difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives.

Other less serious side effects are also uncommon and reports have included mild stomach upset.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

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