Oat Straw is a restorative herb that supports healthy sleep patterns and maintains a healthy nervous system. In 1987, the German Commission E declared the herb an effective remedy for anxiety and stress.

Oat Straw is rich in vitamins and minerals, especially potassium and magnesium, which are more predominant when the seed is in the milky stage. The relaxing properties of magnesium are well-noted and may in part contribute to the herb's support for the nervous system especially when weakness is associated with stress and exhaustion. The herb has been recommended for fatigue and over time regular use may increase an individual’s stamina and strength. The herb shows promise in mood regulation and studies suggest the it might help reduce stress, anxiety, and even symptoms of mild depression.

Oat Straw and cognitive health 

Early research suggests Oat Straw might benefit cognitive function in older adults. It has been shown to boost cerebral circulation through several mechanisms of action, one of which could be through enhancing nitric oxide (acts as a vasodilator). The herb contains the amino acid arginine which is instrumental in synthesizing create nitric oxide. Oat Straw also contains a group of phytochemicals called avenanthramides, which have also been shown to enhance nitric oxide production.