Reishi Drinks
Reishi mushrooms are sometimes advertised as having the ability to help you relax and de-stress. One reason is the compound triterpene, which aids in relaxation. The mushrooms may even aid in the improvement of sleep. Human evidence is, as always, limited. Still, there's enough anecdotal evidence that the approach might be worth a shot. Research has shown that the reishi can help with blood pressure and depression. The observed outcomes could help with anxiety symptoms as well.
Rather than relying on reishi mushrooms, why not use reishi powder instead? This is easily incorporated into hot beverages or brewed to make herbal tea. Many stores that sell the powder will also give you instructions on how to use it.