When you first get your braces on, your teeth will hurt for a few days, as they will every time you get your braces tightened or your wires changed.
Chamomile is also popular for anxiety in children. Fennel. Fennel isn't for anxiety specifically, but it is linked to treating some of the most common symptoms of anxiety, including digestion, coughing (many with anxiety have a nervous cough), and asthma (anxiety can exacerbate asthma symptoms).
Always follow the recommended dosage and check with your doctor first if you are taking other medication. Kava kava (piper methysticum). The effectiveness of Kava in anxiety conditions has been proven in clinical studies. It appears from research that it may have a directly soothing effect on the amygdala (the main part of the brain involved in the fear response) and this makes it a particularly useful herb for anxiety problems.