Disclosed is a slow release injection agent of anticancer composition containing
nitrosourea drugs and synergistic agent, which comprises slow release microspheres and dissolvent, wherein the slow release microspheres comprise anti-
cancer active constituents and slow release auxiliary materials, the dissolvent being conventional dissolvent or specific dissolvent containing suspension
adjuvant. The
viscosity of the suspension
adjuvant is 100-3000cp (at 20-30 deg C), and is selected from
sodium carboxymethylcellulose, the
nitrosourea drugs are selected from
Carmustine,
Nimustine or
Fotemustine, the synergistic agent can be selected from
tetrazine drugs such as Mitozolomide or
temozolomide and / or
anticancer antibiotics such as Adriamycin, Aclarubicin,
Epirubicin, mitomycin or pidorubicin, the slow release auxiliary materials are selected from
polyphosphate ester copolymers such as p(LAEG-EOP), p(DAPG-EOP),
copolymer or blend of
polyphosphate ester with
polylactic acid, Polifeprosan, sebacylic acid and
PLGA. The anticancer composition can also be prepared into slow release implanting agent, for injection or placement in or around tumor with a period of effective concentration maintenance over 60 days, as well as the
treatment effect of appreciably lowering general reaction of the drugs, and improving the
treatment effect of the non-operative treatment methods such as
chemotherapy.