Traditionally Melissa (Melissa officinalis)was used to encourage longevity and to improve mood. In keeping with its traditional uses, Melissa is a valuable relaxing tonic used in treating mild depression, restlessness, irritability and anxiety. It reduces feelings of panic and nervousness and is useful in treating digestive problems such as indigestion, nausea and acidity caused by over-anxiety. Melissa relieves cold sores and reduces the chances of further outbreak. Additionally, it may be used to treat an over-active thyroid.