Hi there, and thanks for writing in! A few herbs that we offer to help support with combating anxiety are Ashwagandha and Reishi. Ashwagandha is an adaptogen that may support bring more equilibrium to the body, promote more restful sleep and may support lowering levels of cortisol in the body, which is released when one is under stress. The Ashwagandha Transcendent Elixir is also a very potent way to take this herb, and is a triple extract of this transformational food. Reishi is a mushroom called the "Queen Healer Mushroom," and is a revered food that may support stress relief. Though we do not have any herbs for specifically helping to combat canker sores, we recommend speaking with your doctor, health care practitioner or an herbalist to see what is best for you and make sure that none of these herbs exacerbate or irritate your canker sores when they are present. We hope this is helpful!