Healvedaâs Tulsi Ark is made from the extract of 5 types of Tulsi: Shyam Tulsi Vishnu Tulsi Ram Tulsi Nimbu Tulsi Van Tulsi. TULSI -âQUEEN OF HERBSâ There are more than 100 types of Tulsi available in the world. But in Ayurveda the main three Tulsies are described i.e. Ram Tulsi Shyam Tulsi and Van Tulsi. Tulsi is a well-known sacred plant in India. Tulsi has proved to be highly effective in protecting our body from various infections and diseases of the heart liver skin kidney etc. It is beneficial for the entire family. Tulsi is called the âQueen of Herbsâ. Tulsi is well known for its myriad medicinal properties â antibacterial antifungal antipyretic antioxidant antiseptic and antiviral. Tulsi is considered to be a safe ayurvedic medicine to boost immunity naturally.