What are the side effects of grape seed?

What are the possible side effects of grape seed ()? Although rare, allergic reactions to grape seed may be possible. Stop taking grape seed 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.This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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