Also known as Indian valerian, tagara (Valeriana wallichii) is considered one of the best tonics in Ayurveda to treat nervous disorders caused by vata. It has sedative properties and is used to reduce irritability and mental stress.¹ In one clinical trial, Indian valerian was shown to reduce stress and anxiety, and also improved symptoms of depression in human subjects, corroborating its Ayurvedic use for stress disorders.²⁶