What is a good supplement to take for stress/anxiety?

Many ways: If you experience considerable anxiety, reduce or eliminate stimulants such as caffeine and nicotine. Also consume a healthy diet and get plenty of exercise. Counseling, Meditation and Energy Tapping can also help.

Stress relief: In my integrative medical practice we encourage people to avoid medications for the treatment of anxiety unless it's moderate to severe in intensity. L-theanine is a green tea derivative that calms without sedation. Another useful treatment is an oral form of lavender known as Lavella.