Traditional Chinese medicine composition for the treatment of diabetic retinopathy

A traditional Chinese medicine (TCM) composition for the treatment of diabetic retinopathy, wherein the composition comprises therapeutically effective amounts of Astragali radix extract 15-60 parts by weight, Pseudostellariae radix extract 6-25 parts by weight, Cinnamomi ramulus extract 5-20 parts by weight, Angelica sinensis radix extract 10-50 parts by weight, Notoginseng radix ET rhizoma extract 3-12 parts by weight, Dioscoreae rhizoma extract 15-60 parts by weight, Salviae miltiorrhizae radix ET Rhizoma extract 15-60 parts by weight, Pheretima extract 3-12 parts by weight, Rehmanniae radix extract 10-50 parts by weight, and Atractylodis macrocephalae Rhizoma extract 10-50 parts by weight.

A preparation method of a traditional Chinese medicine (TCM) composition for the treatment of diabetic retinopathy or macular edema, wherein the composition comprises therapeutically effective amounts of active pharmaceutical ingredients consisting essentially of extracts of Astragali radix 10-80 parts by weight, Pseudostellariae radix 5-30 parts by weight, Cinnamomi ramulus 3-25 parts by weight, Angelica sinensis radix 8-60 parts by weight, Notoginseng radix ET rhizoma 2-15 parts by weight, Dioscoreae rhizoma 10-80 parts by weight, Salviae miltiorrhizae radix ET rhizoma 10-80 parts by weight, Pheretima 2-15 parts by weight, Rehmanniae radix 8-60 parts by weight, and Atractylodis macrocephalae rhizoma 8-60 parts by weight, the preparation method comprising:

• (i) Taking the active pharmaceutical ingredients each having an amount corresponding to the proportion by weight above,
• (ii) Extracting the active pharmaceutical ingredients with water or an organic solvent, and
• Preparing the extracted active pharmaceutical ingredients into an oral dosage form.