Abstract: A non-addictive analgesic sustained-release drug delivery system, comprising: (1) a narcotic analgesic drug having a concentration of 1 mg/ml-160 mg/ml, the drug being selected from a group consisting of: a local analgesic drug, and the combination of the local analgesic drug and a nonsteroidal analgesic drug and/or an opioid analgesic drug; (2) a drug menstruum in a proportion of 1%-75% (v/v), the menstruum being selected from a group consisting of benzyl alcohol, ethanol, benzyl benzoate, ethyl lactate, and tetrahydrofurfuryl polyethylene glycol ether; and (3) a drug sustained-release formulation having a proportion of 25%-99% (v/v), the sustained-release formulation being selected from a group consisting of natural vegetable oil, synthetic lipid, artificially improved half-natural lipid and derivative thereof. Also disclosed are a preparation process and use of the sustained-release drug delivery system.

Abstract: An oily formulation of fulvestrant or derivatives thereof and a method for producing the same. The oily formulation comprises: fulvestrant or derivatives thereof in an amount of 10 mg/ml to 170 mg/ml; a lactate compound in an amount of 5 to 80% of the total weight of the formulation; a vegetable oil or synthetic oil (ester); an analgesic; and an optional antioxidant.

Abstract: A non-addictive analgesic sustained-release drug delivery system, comprising: (1) a narcotic analgesic drug having a concentration of 1 mg/ml-160 mg/ml, the drug being selected from a group consisting of: a local analgesic drug, and the combination of the local analgesic drug and a nonsteroidal analgesic drug and/or an opioid analgesic drug; (2) a drug menstruum in a proportion of 1%-75% (v/v), the menstruum being selected from a group consisting of benzyl alcohol, ethanol, benzyl benzoate, ethyl lactate, and tetrahydrofurfuryl polyethylene glycol ether; and (3) a drug sustained-release formulation having a proportion of 25%-99% (v/v), the sustained-release formulation being selected from a group consisting of natural vegetable oil, synthetic lipid, artificially improved half-natural lipid and derivative thereof. Also disclosed are a preparation process and use of the sustained-release drug delivery system.

Abstract: An oily formulation of fulvestrant or derivatives thereof and a method for producing the same. The oily formulation comprises: fulvestrant or derivatives thereof in an amount of 10 mg/ml to 170 mg/ml; a lactate compound in an amount of 5 to 80% of the total weight of the formulation; a vegetable oil or synthetic oil (ester); an analgesic; and an optional antioxidant.