) Sedivet 1% Injection is used as a sedative and analgesic to facilitate handling, or during clinical examinations, clinical procedures, and minor surgical procedures in adult horses. Sedivet 1.0% Injection is also indicated as a preanesthetic prior to the induction of general anesthesia in adult horses. Sedivet contains romifidine hydrochloride. Sedivet 1% Injection is recommended for IV administration. Romifidine hydrochloride.