Equioxx Tablets (Firocoxib) for Horses is a non-steroidal, anti-inflammatory drug for the control of pain and inflammation associated with osteoarthritis in horses. Each Equioxx Tablet contains 57 mg firocoxib. Equioxx Firocoxib Tablets are recommended for oral administration in horses weighing 800 - 1300 lbs., once daily for up to 14 days. Firocoxib.