Good Health Rapid Calm provides quick and convenient stress support, through supplying L-Theanine is a effervescent tablets to be added to water to drink. L-Theanine is an amino acid that is quickly absorped to support calmness and a relaxed mood. Also Rapid Calm contains Vitamin D3, for all year round mood support, and Magnesium, that supports nervous tension and better sleep. Good Health Rapid Calm is ideal to support those going a heightened period of stress, and need support quickly. The calming effects of Rapid Calm may be noticeable within 15 minutes.