What are the side effects of devil's claw?

What are the possible side effects of devil's claw ()? Although rare, allergic reactions to devil's claw may occur. Stop taking devil's claw 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 infrequently. Talk to your doctor, pharmacist, or health care provider if you experience
  • headache,
  • ringing in the ears,
  • loss of appetite, or
  • loss of taste.
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.