What are the side effects of gentian?

What are the possible side effects of gentian ()? Although uncommon, allergic reactions to gentian have been reported. Stop taking gentian 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 also been reported. Talk to your doctor if you experience:
  • stomach irritation,
  • nausea,
  • vomiting, or
  • changes in your menstrual cycle.
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.