In 2019, the Hewisi drummers of the Dalada Maligawa created history by entering the Guinness Book of World Records for the largest number of drummers performing continuously for a set period—a testament to their stamina and unity. Yet, for the practitioners, the accolade is secondary to the privilege of serving the Sacred Tooth Relic.

Historically, this was a military band. The Hewisi was the "heavenly music" used to announce the arrival of the King and to invoke the blessings of the gods during the grand Esala Perahera. Today, stripped of its martial context, it serves a purely devotional purpose—a sonic offering to the Buddha.

The ingredients are mixed with water and then processed through a series of steps, including grinding, filtering, and drying. The final product is a fine powder or paste, which is used to treat various ailments.

Dalada Hewisi has its roots in ancient Sri Lankan medicine, dating back to the time of the Ayurvedic physician, Sushruta (6th century BCE). The medicine was initially used to treat various ailments, including digestive issues, fever, and skin conditions. Over time, Dalada Hewisi became an integral part of Sri Lankan Ayurvedic practice, with its preparation and usage being passed down through generations of Ayurvedic physicians.

For visitors hoping to witness the Dalada Hewisi, timing and respect are key: