(Pfizer Animal Health) Dormosedan is a non-narcotic sedative and analgesic for use in horses. Each ml of Dormosedan contains 10 mg detomidine hydrochloride. Dormosedan is indicated for use as a sedative and analgesic to facilitate minor surgical and diagnostic procedures in mature horses and yearlings. It has been used successfully to calm fractious horses, to provide relief from abdominal pain and to facilitate medical procedures. Dormosedan is given IV or IM, depending upon application. Dormosedan is typically administered at the rate of 0.2 or 0.4 ml per 220 lbs body weight, depending on the depth and duration of sedation or anesthesia required. Detomidine hydrochloride.