Domidine 10 mg/ml Solution for Injection Presentation Domidine 10 mg/ml, solution for injection. Detomidine hydrochloride for horses and cattle. Clear and colourless solution. 1 ml solution for injection contains: Active substance: Detomidine hydrochloride 10.0 mg. This corresponds to 8.36 mg detomidine base Excipients: Methyl parahydroxybenzoate (E218) 1.0 mg, other excipients up to 1 ml.