Gond Siyah, also known as Kala Gond or Black Gum, is a traditional Ayurvedic herb used for its medicinal properties, particularly for joint pain and other ailments. It's believed to offer relief from back pain, leg pain, headaches, bone/nerve pain, and arthritis. Additionally, it's considered a valuable preventive measure against such complications and is believed to help with reducing uric acid levels and sciatica.