| abstract |
The invention provides a complex of formula (I) or a solvate thereof (where n is from 1 to 4), a pharmaceutical composition and the use of a pharmaceutical composition in the prevention or treatment of pain during surgical interventions, intraoperative pain and postoperative pain. The technical solution in accordance with the present invention provides a drug that can be obtained through a simple production method and can provide a stable release of local anesthetic in the body for a long period. The drug can be released for at least three days or more, while it can provide a long-term analgesic effect on postoperative pain, can be easily applied by the attending physician and the patient, and provides good treatment adherence. |