What are the side effects of goldenseal?

What are the possible side effects of goldenseal ()? Although uncommon, allergic reactions to goldenseal have been reported. Stop taking goldenseal 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 have been infrequently reported. Talk to your doctor or pharmacist if you experience
  • headache; or
  • stomach upset.
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.